str_shuffle() equivalent in javascript?

str_shuffle() equivalent in javascript? - php

Like the str_shuffle() function in PHP, is there a function similar in shuffling the string in javascript ?
Please help !

No such function exist, you'll write one yourself. Here's an example:
function shuffle(string) {
var parts = string.split('');
for (var i = parts.length; i > 0;) {
var random = parseInt(Math.random() * i);
var temp = parts[--i];
parts[i] = parts[random];
parts[random] = temp;
}
return parts.join('');
}
alert(shuffle('abcdef'));

You could use php.js implementation:
http://phpjs.org/functions/str_shuffle:529

No, there is no inbuilt method of String that will randomise the character sequence.

Here's my versinof the php.js function
function str_shuffle (str) {
var newStr = [];
if (arguments.length < 1) {
throw 'str_shuffle : Parameter str not specified';
}
if (typeof str !== 'string') {
throw 'str_shuffle : Parameter str ( = ' + str + ') is not a string';
}
str = str.split ('');
while (str.length) {
newStr.push (str.splice (Math.floor (Math.random () * (str.length - 1)) , 1)[0]);
}
return newStr.join ('');
}

You could also do it as a prototype:
String.prototype.shuffle = function() {
var parts = this.split('');
for (var i = 0, len = parts.length; i < len; i++) {
var j = Math.floor( Math.random() * ( i + 1 ) );
var temp = parts[i];
parts[i] = parts[j];
parts[j] = temp;
}
return parts.join('');
};
Using it like so:
var myString = "Hello";
myString = myString.shuffle();

I would recommend lodash shuffle function.
const result = _.shuffle('my_string');

Related

Running multiple functions javascript

I currently have a table that is being populated by a MySQL table, in turn i want to take the data from these cells and use them to create a simulated real time update, i have it working however due to having multiple rows im using for loops in the javascript functions and i believe this is causing the other functions not to run and i cannot figure out a way round it.
Javascript Code:
var seconds = 5;
var divid = "status";
var url = "boo.php";
var timeout;
function refreshdiv(){
// The XMLHttpRequest object
var xmlHttp;
try{
xmlHttp=new XMLHttpRequest(); // Firefox, Opera 8.0+, Safari
}
catch (e){
try{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP"); // Internet Explorer
}
catch (e){
try{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
catch (e){
alert("Your browser does not support AJAX.");
return false;
}
}
}
// Timestamp for preventing IE caching the GET request
fetch_unix_timestamp = function()
{
return parseInt(new Date().getTime().toString().substring(0, 10))
}
var timestamp = fetch_unix_timestamp();
var nocacheurl = url+"?t="+timestamp;
// The code...
xmlHttp.onreadystatechange=function(){
if(xmlHttp.readyState==4){
document.getElementById(divid).innerHTML=xmlHttp.responseText;
setTimeout('refreshdiv()',seconds*1000);
}
}
xmlHttp.open("GET",nocacheurl,true);
xmlHttp.send(null);
}
// Start the refreshing process
var seconds;
window.onload = function startrefresh(){
setTimeout('refreshdiv()',seconds*1000);
}
function runningtime(int) {
if(int == 0) { //if there is data
console.log("int=0 so no data is present, int: " + int);
} else if(int == 1){
var isRunning = new Array();
isRunning[0] = " ";
for (var i=0; i < 3; i++) {
var bool = 'running' + i;
console.log("Running = " + bool);
running = document.getElementById(bool).innerHTML.substring(10,11);
console.log("running: " + running);
if(isRunning[i] == "1") {
var time = 'Time' + i;
a= document.getElementById(time).innerHTML;
console.log("a= " + a);
hour=a.substring(0,2);
min= a.substring(3,5);
sec= a.substring(6,8);
sec==sec++;
if (min<=9) { min="0"+min; }
if (sec<=9) { sec="0"+sec; }
time = (hour + ":" + min + ":" + sec + " ");
if (document.getElementById) { document.getElementById(time).innerHTML = time; }
else if (document.layers) {
document.layers.theTime.document.write(time);
document.layers.theTime.document.close(); }
} else {
//Do nothing
return;
}
}
timeout = setTimeout("runningtime(1)", 1000);
}
}
function experiencehour(exp) {
if(exp == 0) { //if there is dexphourtexphour
console.log("exp=0 so no data is present, exp: " + exp);
} else if(exp == 1){
var isRunning = new Array();
isRunning[0] = " ";
for (var i=0; i < 3; i++) {
var bool = 'running' + i;
console.log("Running = " + bool);
running = document.getElementById(bool).innerHTML.substring(10,11); //checks if bot running
console.log("running: " + running);
if(isRunning[i] == "1") {
var exph = 'Exph' + i;
var expg = 'Exp' + i;
exphour = document.getElementById(exph).innerHTML; //exphour
currexp = document.getElementById(exp).innerHTML; //current gained exp
exphour =parseInt(exphour);
currexp =parseInt(currexp);
console.log("currexp= " + currexp);
console.log("exphour= " + exphour);
expmin = exphour/60;
console.log("expmin= " + expmin);
expsec = Math.round(expmin/60);
console.log("expsec= " + expsec);
newtotalexp = currexp + expsec;
console.log("newtotalexp= " + newtotalexp);
if (document.getElementById) { document.getElementById(exp).innerHTML = newtotalexp; } //writing new exp
else if (document.lexphouryers) {
document.lexphouryers.theTime.document.write(time);
document.lexphouryers.theTime.document.close(); }
} else {
//Do nothing
return;
}
}
timeout = setTimeout("experiencehour(1)", 1000);
}
}
function variable1hour(var1) {
if(var1 == 0) { //if there is dvar1hourtvar1hour
console.log("var1=0 so no data is present, var1: " + var1);
} else if(var1 == 1){
var isRunning = new Array();
isRunning[0] = " ";
for (var i=0; i < 3; i++) {
var bool = 'running' + i;
console.log("Running = " + bool);
isRunning[i] = document.getElementById(bool).innerHTML.substring(10,11); //checks if bot running
console.log("isRunning = " + isRunning[i]);
if(isRunning[i] == "1") {
var varh = 'Varh' + i;
var varg = 'Var' + i;
console.log("Varh = " + varh);
console.log("Var = " + varg);
var1hour = document.getElementById(varh).innerHTML; //var1hour
currvar1 = document.getElementById(varg).innerHTML; //current gained var1
var1hour =parseInt(var1hour);
currvar1 =parseInt(currvar1);
console.log("currvar1= " + currvar1);
console.log("var1hour= " + var1hour);
var1min = var1hour/60;
console.log("var1min= " + var1min);
var1sec = Math.round(var1min/60);
console.log("var1sec= " + var1sec);
newtotalvar = currvar1 + var1sec;
console.log("newtotalvar= " + newtotalvar);
if (document.getElementById) { document.getElementById(varg).innerHTML = newtotalvar; } //writing new var1
else if (document.lvar1houryers) {
document.lvar1houryers.theTime.document.write(time);
document.lvar1houryers.theTime.document.close();
}
} else {
//Do nothing
return;
}
}
timeout = setTimeout("variable1hour(1)", 1000);
}
}
function stopScript() {
console.log("Stopping script");
clearTimeout(timeout);
}
function startScript(i) {
variable1hour(i);
experiencehour(i);
runningtime(i);
}
Any ideas on how i can get around this so i can get all 3 functions running simultaneously.
I have checked console and im not getting any errors that would stop them from running.

You can't have simultaneously in JS. But you can simulate simultaneous a bit in JS.
Take a look at underscore's defer method.
http://underscorejs.org/#defer
It'd work like this:
Take the loop body and wrap it up in a function
Each iteration through the for loop, make a call to the function using defer
That's basically it. Doing that will allow other functions to "interrupt" any given process (function) and thus "share" the execution thread.
A standard JS implementation w/out defer. I'm trying to simulate the closer of defer. The key takeaway here is that, while the calls still execute in the order that they were queued, all get "started" before any one of them completes. In the case of AJAX async requests, the async response should be able to inject itself between any two loop iterations. You can also set data processing by using slight delays
http://jsfiddle.net/t2z9A/
for(var i = 0; i != 5; ++i)
{
(function(index)
{
document.getElementById('id' + index).innerHTML = 'started...';
setTimeout(function()
{
// kill some time
var str = '';
for(var j = 0; j != 10000000; ++j)
str = str + ' ';
document.getElementById('id' + index).innerHTML = 'Function: 1. Index: ' + index + ' - ' + new Date().getTime();
}, index);
})(i);
}
for(var i = 5; i != 10; ++i)
{
(function(index)
{
document.getElementById('id' + index).innerHTML = 'started...';
setTimeout(function()
{
// kill some time
var str = '';
for(var j = 0; j != 1000000; ++j)
str = str + ' ';
document.getElementById('id' + index).innerHTML = 'Function: 2. Index: ' + index+ ' - ' + new Date().getTime();
}, 1);
})(i);
}

What is the JS equivalent to the PHP function number_format?

PHP Function:
function formatNumberForDisplay($number, $decimal=0, $decimalSeperator='.', $numberSeperator=',')
{
return number_format($number, $decimal, $decimalSeperator, $numberSeperator);
}
Can anybody suggest to me the equivalent functionality in jQuery/JavaScript?

The same equivalent of number_format in js can found here
function number_format (number, decimals, dec_point, thousands_sep) {
// Strip all characters but numerical ones.
number = (number + '').replace(/[^0-9+\-Ee.]/g, '');
var n = !isFinite(+number) ? 0 : +number,
prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),
sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,
dec = (typeof dec_point === 'undefined') ? '.' : dec_point,
s = '',
toFixedFix = function (n, prec) {
var k = Math.pow(10, prec);
return '' + Math.round(n * k) / k;
};
// Fix for IE parseFloat(0.55).toFixed(0) = 0;
s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');
if (s[0].length > 3) {
s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);
}
if ((s[1] || '').length < prec) {
s[1] = s[1] || '';
s[1] += new Array(prec - s[1].length + 1).join('0');
}
return s.join(dec);
}

Just use toLocaleString on an integer object.
https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString#Browser_compatibility
let x = 1234567;
//if x is a string/non-number, use parseInt/parseFloat to convert to a number. Thanks #Aleksandr Kopelevich
x.toLocaleString('us', {minimumFractionDigits: 2, maximumFractionDigits: 2})

is this what you'd like to get?
yourFloatVarHere.toFixed(2);
voilà.

Native "Intl" object approach:
var amount = 5000.25;
var locale = 'de';
var options = {style: 'currency', currency: 'eur', minimumFractionDigits: 2, maximumFractionDigits: 2};
var formatter = new Intl.NumberFormat(locale, options);
console.log(formatter.format(amount));
http://jsfiddle.net/arturrelax/sa9jL138/1/
More information at: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Intl

I know it's an old thread, but I made my own function, which is in pure Javascript.
Simple Solution
https://gist.github.com/VassilisPallas/d73632e9de4794b7dd10b7408f7948e8/bf17eccef8521b4e5869bdc6a5b09a771356fbff
This works fine with finite numbers
function number_format(number, decimals, dec_point, thousands_point) {
if (number == null || !isFinite(number)) {
throw new TypeError("number is not valid");
}
if (!decimals) {
var len = number.toString().split('.').length;
decimals = len > 1 ? len : 0;
}
if (!dec_point) {
dec_point = '.';
}
if (!thousands_point) {
thousands_point = ',';
}
number = parseFloat(number).toFixed(decimals);
number = number.replace(".", dec_point);
var splitNum = number.split(dec_point);
splitNum[0] = splitNum[0].replace(/\B(?=(\d{3})+(?!\d))/g, thousands_point);
number = splitNum.join(dec_point);
return number;
}
Complex Solution
This solves the issue with big numbers
https://gist.github.com/VassilisPallas/d73632e9de4794b7dd10b7408f7948e8
const splitThousands = (number) => (dec_point, thousands_point) => {
const splitNum = number.toString().split(dec_point);
splitNum[0] = splitNum[0].replace(/\B(?=(\d{3})+(?!\d))/g, thousands_point);
return splitNum.join(dec_point);
};
const isBigNumber = (number) => number.toString().includes("e");
const isBigFloat = (number) => number.toString().includes("-");
const calcTrailing = (dec, len) => Number(dec) + 2 - len;
const handleBigFloats = (number, decimals) => {
if (!decimals) {
return "0";
}
const [numbers, dec] = number.toString().replace(".", "").split("e-");
const trailingZeros = calcTrailing(dec, numbers.length);
const res = `${"0.".padEnd(trailingZeros + 2, "0")}${numbers}`;
return decimals ? res.substring(0, 2) + res.substring(2, decimals + 2) : res;
};
const handleBigNumbers = (number, decimals, dec_point, thousands_point) => {
if (isBigFloat(number)) {
return handleBigFloats(number, decimals);
}
return splitThousands(BigInt(number))(dec_point, thousands_point);
};
function handleFiniteNumbers(number, decimals, dec_point, thousands_point) {
if (!isFinite(number)) {
throw new TypeError("number is not finite number");
}
if (!decimals) {
const len = number.toString().split(".").length;
decimals = len > 1 ? len : 0;
}
return splitThousands(
parseFloat(number).toFixed(decimals).replace(".", dec_point)
)(dec_point, thousands_point);
}
const numberFormat = (
number,
decimals,
dec_point = ".",
thousands_point = ","
) => {
if (number == null || typeof number !== "number") {
throw new TypeError("number is not valid");
}
if (isBigNumber(number)) {
return handleBigNumbers(number, decimals, dec_point, thousands_point);
}
return handleFiniteNumbers(number, decimals, dec_point, thousands_point);
};
https://jsfiddle.net/p2ft9n4v/1/

Closer function to php number_format($number) should be number.toLocaleString('en') of javascript

Here is another short solution that should behaviour like the php-equivalent.
function number_format(number,decimals,dec_point,thousands_sep) {
number = number*1;//makes sure `number` is numeric value
var str = number.toFixed(decimals?decimals:0).toString().split('.');
var parts = [];
for ( var i=str[0].length; i>0; i-=3 ) {
parts.unshift(str[0].substring(Math.max(0,i-3),i));
}
str[0] = parts.join(thousands_sep?thousands_sep:',');
return str.join(dec_point?dec_point:'.');
}

Here is a simple function that you can use to achieve almost the same result of number_format in php:
function number_format(user_input){
var filtered_number = user_input.replace(/[^0-9]/gi, '');
var length = filtered_number.length;
var breakpoint = 1;
var formated_number = '';
for(i = 1; i <= length; i++){
if(breakpoint > 3){
breakpoint = 1;
formated_number = ',' + formated_number;
}
var next_letter = i + 1;
formated_number = filtered_number.substring(length - i, length - (i - 1)) + formated_number;
breakpoint++;
}
return formated_number;
}
Another way is to use ajax to make a call to a php script where you run number_format on the number and return it with ajax as a string. But it`s a bit messy.

It no easy, try to use simple jquery-plugins such as:
jquery-numberformatter
Jquery-Price-Format

My take on this:
var number_format = function(num) {
stringNum = num.toString();
stringNum = stringNum.split("");
c = 0;
if (stringNum.length>3) {
for (i=stringNum.length; i>-1; i--) {
if ( (c==3) && ((stringNum.length-i)!=stringNum.length) ) {
stringNum.splice(i, 0, ",");
c=0;
}
c++
}
return stringNum;
}
return num;
}
$("body").append(number_format(100000000));

Another variant of exposed examples:
const numberFormat = (value, decimals, decPoint, thousandsSep) => {
decPoint = decPoint || '.';
decimals = decimals !== undefined ? decimals : 2;
thousandsSep = thousandsSep || ' ';
if (typeof value === 'string') {
value = parseFloat(value);
}
let result = value.toLocaleString('en-US', {
maximumFractionDigits: decimals,
minimumFractionDigits: decimals
});
let pieces = result.split('.');
pieces[0] = pieces[0].split(',').join(thousandsSep);
return pieces.join(decPoint);
};

The JS equivalent will be:
var number = //input value
parseFloat(number).toFixed(3);

I'm to do it just calling the JS function as follows and it works:
var formattedNumber = number_format(value)

Turning on BBCODES - Javascript

I'm using this chat http://tutorialzine.com/2010/10/ajax-web-chat-php-mysql/ and I tried to turn on the bbcodes but: http://imageshack.us/photo/my-images/827/bbcodes1.png/
I tried to replace in
scripts.js
text : text.replace(/</g,'<').replace(/>/g,'>')
with
text : text.replace(/</g,'<').
replace(/>/g,'>').
replace(/\[b\]((\s|.)+?)\[\/b\]/,'<b>\\1</b>')

This is my bbcode function, you can edit the codes variable to support more bbcode. For now, it support only [b], [i], [u], [url], [img].
[read] is my special bbcode for my website
function bbcode(text){
var codes = {};
codes['url'] = {
params : {
href : ''
},
html: "$text"
};
codes['b'] = {
params : {
},
html : "<b>$text</b>"
};
codes['i'] = {
params : {
},
html : "<i>$text</i>"
};
codes['u'] = {
params : {
},
html : "<u>$text</u>"
};
codes['img'] = {
params : {
},
html : "<img src=\"$text\" />"
};
codes['read'] = {
params : {
},
text : function(text){
for(var x in codes){
text = text.replace(new RegExp('\\[' + x + '\\]','gi'), '').replace(new RegExp('\\[\\/' + x + '\\]','gi'), '');
}
return encodeURIComponent(text);
},
process: function(text){
return text;
},
html : "$text <object type=\"application/x-shockwave-flash\" data=\"" + GLOBALS.baseUrl + "/player_mp3_maxi.swf\" width=\"200\" height=\"20\"><param name=\"movie\" value=\"" + GLOBALS.baseUrl + "/player_mp3_maxi.swf\" /><param name=\"bgcolor\" value=\"#ffffff\" /><param name=\"FlashVars\" value=\"mp3=http://api.ispeech.org/api/rest?apikey%3Ddeveloperdemokeydeveloperdemokey%26action%3Dconvert%26voice%3Dusenglishfemale1%26text%3D$TEXT&width=200&showslider=1\" /></object>"
};
text = text.replace(/\</g, '<').replace(/\>/g, '>');
var nomore = false;
while(!nomore){
var matches = text.match(/\[([^\]]+)\]/gi);
if(matches == null)
return text;
nomore = true;
for(var i = 0; i < matches.length; i++){
var code = matches[i].substring(1, matches[i].length - 1);
var parts = code.split(/\s+/);
if(typeof codes[parts[0]] == 'object'){
//is exist
var obj = {};
//get the params
for(var j = 1; j < parts.length; j++)
{
var temp = parts[j].split('=');
if(typeof codes[parts[0]].params[temp[0]] != 'undefined'){
obj[temp[0]] = (temp.length > 1) ? (temp[1].indexOf('"') == 0 ? temp[1].substring(1, temp[1].length - 1) : temp[1]) : '';
}
}
//find the text
var index = text.indexOf(matches[i]);
var index2 = text.indexOf('[/'+parts[0]+']', index);
if(index2 == -1)
index2 = text.length;
var t = text.substring(index + matches[i].length, index2);
if(typeof codes[parts[0]].process == 'function'){
t = codes[parts[0]].process(t);
}if(typeof codes[parts[0]].text == 'function'){
t2 = codes[parts[0]].text(t);
}
var html = codes[parts[0]].html;
for(var x in obj)
html = html.replace("$" + x, obj[x]);
html = html.replace(/\$text/g, t);
if(typeof codes[parts[0]].text == 'function'){
html = html.replace(/\$TEXT/g, t2);
}
text = text.substr(0, index) + html + text.substr(index2 + parts[0].length + 3);
nomore = false;
}
}
}
text = text.replace(/\n/g, "<br />");
return text;
}
You can use this by:
text: bbcode(text)

JavaScript function that can produce same results as PHP function number_format [duplicate]

Is there a simple way to format numbers in JavaScript, similar to the formatting methods available in C# (or VB.NET) via ToString("format_provider") or String.Format()?

Generally
Formatting numbers in JavaScript
Formatting numbers for currency display and more.
In jQuery
autoNumeric (a decent number formatter & input helper with locale support for jQuery 1.5+)
jQuery Format (a clientSide implementation of Java's SimpleDateFormat and NumberFormat)
jquery-numberformatter (number formatter with locale support)

Yes, there is definitely a way to format numbers properly in javascript, for example:
var val=2489.8237
val.toFixed(3) //returns 2489.824 (round up)
val.toFixed(2) //returns 2489.82
val.toFixed(7) //returns 2489.8237000 (padding)
With the use of variablename.toFixed .
And there is another function toPrecision() .
For more detail you also can visit
http://raovishal.blogspot.com/2012/01/number-format-in-javascript.html

Here's a simple JS function to add commas to an integer number in string format. It will handle whole numbers or decimal numbers. You can pass it either a number or a string. It obviously returns a string.
function addCommas(str) {
var parts = (str + "").split("."),
main = parts[0],
len = main.length,
output = "",
first = main.charAt(0),
i;
if (first === '-') {
main = main.slice(1);
len = main.length;
} else {
first = "";
}
i = len - 1;
while(i >= 0) {
output = main.charAt(i) + output;
if ((len - i) % 3 === 0 && i > 0) {
output = "," + output;
}
--i;
}
// put sign back
output = first + output;
// put decimal part back
if (parts.length > 1) {
output += "." + parts[1];
}
return output;
}
Here's a set of test cases: http://jsfiddle.net/jfriend00/6y57j/
You can see it being used in this previous jsFiddle: http://jsfiddle.net/jfriend00/sMnjT/. You can find functions that will handle decimal numbers too with a simple Google search for "javascript add commas".
Converting a number to a string can be done many ways. The easiest is just to add it to a string:
var myNumber = 3;
var myStr = "" + myNumber; // "3"
Within, the context of your jsFiddle, you'd get commas into the counter by changing this line:
jTarget.text(current);
to this:
jTarget.text(addCommas(current));
You can see it working here: http://jsfiddle.net/jfriend00/CbjSX/

I wrote a simple function (not yet another jQuery plugin needed!!) that converts a number to a decimal separated string or an empty string if the number wasn't a number to begin with:
function format(x) {
return isNaN(x)?"":x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
}
format(578999); results in 578,999
format(10); results in 10
if you want to have a decimal point instead of a comma simply replace the comma in the code with a decimal point.
One of the comments correctly stated this only works for integers, with a few small adaptions you can make it work for floating points as well:
function format(x) {
if(isNaN(x))return "";
n= x.toString().split('.');
return n[0].replace(/\B(?=(\d{3})+(?!\d))/g, ",")+(n.length>1?"."+n[1]:"");
}

Here are some solutions, all pass the test suite, test suite and benchmark included, if you want copy and paste to test, try This Gist.
Method 0 (RegExp)
Base on https://stackoverflow.com/a/14428340/1877620, but fix if there is no decimal point.
if (typeof Number.prototype.format === 'undefined') {
Number.prototype.format = function (precision) {
if (!isFinite(this)) {
return this.toString();
}
var a = this.toFixed(precision).split('.');
a[0] = a[0].replace(/\d(?=(\d{3})+$)/g, '$&,');
return a.join('.');
}
}
Method 1
if (typeof Number.prototype.format1 === 'undefined') {
Number.prototype.format1 = function (precision) {
if (!isFinite(this)) {
return this.toString();
}
var a = this.toFixed(precision).split('.'),
// skip the '-' sign
head = Number(this < 0);
// skip the digits that's before the first thousands separator
head += (a[0].length - head) % 3 || 3;
a[0] = a[0].slice(0, head) + a[0].slice(head).replace(/\d{3}/g, ',$&');
return a.join('.');
};
}
Method 2 (Split to Array)
if (typeof Number.prototype.format2 === 'undefined') {
Number.prototype.format2 = function (precision) {
if (!isFinite(this)) {
return this.toString();
}
var a = this.toFixed(precision).split('.');
a[0] = a[0]
.split('').reverse().join('')
.replace(/\d{3}(?=\d)/g, '$&,')
.split('').reverse().join('');
return a.join('.');
};
}
Method 3 (Loop)
if (typeof Number.prototype.format3 === 'undefined') {
Number.prototype.format3 = function (precision) {
if (!isFinite(this)) {
return this.toString();
}
var a = this.toFixed(precision).split('');
a.push('.');
var i = a.indexOf('.') - 3;
while (i > 0 && a[i-1] !== '-') {
a.splice(i, 0, ',');
i -= 3;
}
a.pop();
return a.join('');
};
}
Example
console.log('======== Demo ========')
var n = 0;
for (var i=1; i<20; i++) {
n = (n * 10) + (i % 10)/100;
console.log(n.format(2), (-n).format(2));
}
Separator
If we want custom thousands separator or decimal separator, use replace():
123456.78.format(2).replace(',', ' ').replace('.', ' ');
Test suite
function assertEqual(a, b) {
if (a !== b) {
throw a + ' !== ' + b;
}
}
function test(format_function) {
console.log(format_function);
assertEqual('NaN', format_function.call(NaN, 0))
assertEqual('Infinity', format_function.call(Infinity, 0))
assertEqual('-Infinity', format_function.call(-Infinity, 0))
assertEqual('0', format_function.call(0, 0))
assertEqual('0.00', format_function.call(0, 2))
assertEqual('1', format_function.call(1, 0))
assertEqual('-1', format_function.call(-1, 0))
// decimal padding
assertEqual('1.00', format_function.call(1, 2))
assertEqual('-1.00', format_function.call(-1, 2))
// decimal rounding
assertEqual('0.12', format_function.call(0.123456, 2))
assertEqual('0.1235', format_function.call(0.123456, 4))
assertEqual('-0.12', format_function.call(-0.123456, 2))
assertEqual('-0.1235', format_function.call(-0.123456, 4))
// thousands separator
assertEqual('1,234', format_function.call(1234.123456, 0))
assertEqual('12,345', format_function.call(12345.123456, 0))
assertEqual('123,456', format_function.call(123456.123456, 0))
assertEqual('1,234,567', format_function.call(1234567.123456, 0))
assertEqual('12,345,678', format_function.call(12345678.123456, 0))
assertEqual('123,456,789', format_function.call(123456789.123456, 0))
assertEqual('-1,234', format_function.call(-1234.123456, 0))
assertEqual('-12,345', format_function.call(-12345.123456, 0))
assertEqual('-123,456', format_function.call(-123456.123456, 0))
assertEqual('-1,234,567', format_function.call(-1234567.123456, 0))
assertEqual('-12,345,678', format_function.call(-12345678.123456, 0))
assertEqual('-123,456,789', format_function.call(-123456789.123456, 0))
// thousands separator and decimal
assertEqual('1,234.12', format_function.call(1234.123456, 2))
assertEqual('12,345.12', format_function.call(12345.123456, 2))
assertEqual('123,456.12', format_function.call(123456.123456, 2))
assertEqual('1,234,567.12', format_function.call(1234567.123456, 2))
assertEqual('12,345,678.12', format_function.call(12345678.123456, 2))
assertEqual('123,456,789.12', format_function.call(123456789.123456, 2))
assertEqual('-1,234.12', format_function.call(-1234.123456, 2))
assertEqual('-12,345.12', format_function.call(-12345.123456, 2))
assertEqual('-123,456.12', format_function.call(-123456.123456, 2))
assertEqual('-1,234,567.12', format_function.call(-1234567.123456, 2))
assertEqual('-12,345,678.12', format_function.call(-12345678.123456, 2))
assertEqual('-123,456,789.12', format_function.call(-123456789.123456, 2))
}
console.log('======== Testing ========');
test(Number.prototype.format);
test(Number.prototype.format1);
test(Number.prototype.format2);
test(Number.prototype.format3);
Benchmark
function benchmark(f) {
var start = new Date().getTime();
f();
return new Date().getTime() - start;
}
function benchmark_format(f) {
console.log(f);
time = benchmark(function () {
for (var i = 0; i < 100000; i++) {
f.call(123456789, 0);
f.call(123456789, 2);
}
});
console.log(time.format(0) + 'ms');
}
async = [];
function next() {
setTimeout(function () {
f = async.shift();
f && f();
next();
}, 10);
}
console.log('======== Benchmark ========');
async.push(function () { benchmark_format(Number.prototype.format); });
async.push(function () { benchmark_format(Number.prototype.format1); });
async.push(function () { benchmark_format(Number.prototype.format2); });
async.push(function () { benchmark_format(Number.prototype.format3); });
next();

If you don't want to use jQuery, take a look at Numeral.js

Firstly, converting an integer into string in JS is really simple:
// Start off with a number
var number = 42;
// Convert into a string by appending an empty (or whatever you like as a string) to it
var string = 42+'';
// No extra conversion is needed, even though you could actually do
var alsoString = number.toString();
If you have a number as a string and want it to be turned to an integer, you have to use the parseInt(string) for integers and parseFloat(string) for floats. Both of these functions then return the desired integer/float. Example:
// Start off with a float as a string
var stringFloat = '3.14';
// And an int as a string
var stringInt = '42';
// typeof stringInt would give you 'string'
// Get the real float from the string
var realFloat = parseFloat(someFloat);
// Same for the int
var realInt = parseInt(stringInt);
// but typeof realInt will now give you 'number'
What exactly are you trying to append etc, remains unclear to me from your question.

http://code.google.com/p/javascript-number-formatter/ :
Short, fast, flexible yet standalone. Only 75 lines including MIT license info, blank lines & comments.
Accept standard number formatting like #,##0.00 or with negation -000.####.
Accept any country format like # ##0,00, #,###.##, #'###.## or any type of non-numbering symbol.
Accept any numbers of digit grouping. #,##,#0.000 or #,###0.## are all valid.
Accept any redundant/fool-proof formatting. ##,###,##.# or 0#,#00#.###0# are all OK.
Auto number rounding.
Simple interface, just supply mask & value like this: format( "0.0000", 3.141592)
UPDATE
As say Tomáš Zato here one line solution:
(666.0).toLocaleString()
numObj.toLocaleString([locales [, options]])
which described in ECMA-262 5.1 Edition:
http://www.ecma-international.org/ecma-262/5.1/#sec-15.7.4.3
https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Number/toLocaleString
and will work in future versions of browsers...

For example:
var flt = '5.99';
var nt = '6';
var rflt = parseFloat(flt);
var rnt = parseInt(nt);

Using JQuery.
$(document).ready(function()
{
//Only number and one dot
function onlyDecimal(element, decimals)
{
$(element).keypress(function(event)
{
num = $(this).val() ;
num = isNaN(num) || num === '' || num === null ? 0.00 : num ;
if ((event.which != 46 || $(this).val().indexOf('.') != -1) && (event.which < 48 || event.which > 57))
{
event.preventDefault();
}
if($(this).val() == parseFloat(num).toFixed(decimals))
{
event.preventDefault();
}
});
}
onlyDecimal("#TextBox1", 3) ;
});

To get a decimal with 2 numbers after the comma, you could just use:
function nformat(a) {
var b = parseInt(parseFloat(a)*100)/100;
return b.toFixed(2);
}

May I suggest numbro for locale based formatting and number-format.js for the general case. A combination of the two depending on use-case may help.

Here's another version:
$.fn.digits = function () {
return this.each(function () {
var value = $(this).text();
var decimal = "";
if (value) {
var pos = value.indexOf(".");
if (pos >= 0) {
decimal = value.substring(pos);
value = value.substring(0, pos);
}
if (value) {
value = value.replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");
if (!String.isNullOrEmpty(decimal)) value = (value + decimal);
$(this).text(value);
}
}
else {
value = $(this).val()
if (value) {
var pos = value.indexOf(".");
if (pos >= 0) {
decimal = value.substring(pos);
value = value.substring(0, pos);
}
if (value) {
value = value.replace(/(\d)(?=(\d\d\d)+(?!\d))/g, "$1,");
if (!String.isNullOrEmpty(decimal)) value = (value + decimal);
$(this).val(value);
}
}
}
})
};

I made a simple function, maybe someone can use it
function secsToTime(secs){
function format(number){
if(number===0){
return '00';
}else {
if (number < 10) {
return '0' + number
} else{
return ''+number;
}
}
}
var minutes = Math.floor(secs/60)%60;
var hours = Math.floor(secs/(60*60))%24;
var days = Math.floor(secs/(60*60*24));
var seconds = Math.floor(secs)%60;
return (days>0? days+"d " : "")+format(hours)+':'+format(minutes)+':'+format(seconds);
}
this can generate the followings outputs:
5d 02:53:39
4d 22:15:16
03:01:05
00:00:00

In case you want to format number for view rather than for calculation you can use this
function numberFormat( number ){
var digitCount = (number+"").length;
var formatedNumber = number+"";
var ind = digitCount%3 || 3;
var temparr = formatedNumber.split('');
if( digitCount > 3 && digitCount <= 6 ){
temparr.splice(ind,0,',');
formatedNumber = temparr.join('');
}else if (digitCount >= 7 && digitCount <= 15) {
var temparr2 = temparr.slice(0, ind);
temparr2.push(',');
temparr2.push(temparr[ind]);
temparr2.push(temparr[ind + 1]);
// temparr2.push( temparr[ind + 2] );
if (digitCount >= 7 && digitCount <= 9) {
temparr2.push(" million");
} else if (digitCount >= 10 && digitCount <= 12) {
temparr2.push(" billion");
} else if (digitCount >= 13 && digitCount <= 15) {
temparr2.push(" trillion");
}
formatedNumber = temparr2.join('');
}
return formatedNumber;
}
Input: {Integer} Number
Outputs: {String} Number
22,870 => if number 22870
22,87 million => if number 2287xxxx (x can be whatever)
22,87 billion => if number 2287xxxxxxx
22,87 trillion => if number 2287xxxxxxxxxx
You get the idea

To further jfriend00's answer (I dont't have enough points to comment) I have extended his/her answer to the following:
function log(args) {
var str = "";
for (var i = 0; i < arguments.length; i++) {
if (typeof arguments[i] === "object") {
str += JSON.stringify(arguments[i]);
} else {
str += arguments[i];
}
}
var div = document.createElement("div");
div.innerHTML = str;
document.body.appendChild(div);
}
Number.prototype.addCommas = function (str) {
if (str === undefined) {
str = this;
}
var parts = (str + "").split("."),
main = parts[0],
len = main.length,
output = "",
first = main.charAt(0),
i;
if (first === '-') {
main = main.slice(1);
len = main.length;
} else {
first = "";
}
i = len - 1;
while(i >= 0) {
output = main.charAt(i) + output;
if ((len - i) % 3 === 0 && i > 0) {
output = "," + output;
}
--i;
}
// put sign back
output = first + output;
// put decimal part back
if (parts.length > 1) {
output += "." + parts[1];
}
return output;
}
var testCases = [
1, 12, 123, -1234, 12345, 123456, -1234567, 12345678, 123456789,
-1.1, 12.1, 123.1, 1234.1, -12345.1, -123456.1, -1234567.1, 12345678.1, 123456789.1
];
for (var i = 0; i < testCases.length; i++) {
log(testCases[i].addCommas());
}
/*for (var i = 0; i < testCases.length; i++) {
log(Number.addCommas(testCases[i]));
}*/

You can do it in the following way:
So you will not only format the number but you can also pass as a parameter how many decimal digits to display, you set a custom decimal and mile separator.
function format(number, decimals = 2, decimalSeparator = '.', thousandsSeparator = ',') {
const roundedNumber = number.toFixed(decimals);
let integerPart = '', fractionalPart = '';
if (decimals == 0) {
integerPart = roundedNumber;
decimalSeparator = '';
} else {
let numberParts = roundedNumber.split('.');
integerPart = numberParts[0];
fractionalPart = numberParts[1];
}
integerPart = integerPart.replace(/(\d)(?=(\d{3})+(?!\d))/g, `$1${thousandsSeparator}`);
return `${integerPart}${decimalSeparator}${fractionalPart}`;
}
Use:
let min = 1556454.0001;
let max = 15556982.9999;
console.time('number format');
for (let i = 0; i < 15000; i++) {
let randomNumber = Math.random() * (max - min) + min;
let formated = format(randomNumber, 4, ',', '.'); // formated number
console.debug('number: ', randomNumber, 'formated: ', formated);
}
console.timeEnd('number format');

Reqular Expression: Replace user defined Format with Number?

I want to replace a user define format like...
ABC-####-09
to
ABC-0023-09
How many leading zero should be decide over how many '#' sign in format, and the length of default value to replace (23 in this case).
Is there any regular expression pattern to do this?
Thanks...

How about this?
$num = 23;
$format = 'ABC-####-09';
print preg_replace('/(#+)/e', 'str_pad($num, strlen("$1"), 0, STR_PAD_LEFT)', $format);

This should work in Javascript:
function user_str_replace {
var match = user_input.match(/#+/);
var length = match.length;
var str = your_number.toString();
var newStr = "";
for (var i = 0; i < length - str.length; i ++) {
newStr = "0" + newStr;
}
newStr = newStr + str;
return (newStr);
}

We Keep Coding

PHP, A popular general-purpose scripting language that is especially suited to web development.

str_shuffle() equivalent in javascript? - php

Like the str_shuffle() function in PHP, is there a function similar in shuffling the string in javascript ? Please help !

You could use php.js implementation: http://phpjs.org/functions/str_shuffle:529

No, there is no inbuilt method of String that will randomise the character sequence.

I would recommend lodash shuffle function. const result = _.shuffle('my_string');

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Reqular Expression: Replace user defined Format with Number?

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