Javascript push_array and in_array - php

What is the equivalents of php functions push_array and in_array in javascript?
Arrays are simple (not multidimensional).
Haven't found something native.

You're looking for the push method and the indexOf method.
Note that indexOf is not supported by IE, so you'll need to implement it yourself, like this:
if (!Array.prototype.indexOf)
{
Array.prototype.indexOf = function(searchElement /*, fromIndex */)
{
"use strict";
if (this === void 0 || this === null)
throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (len === 0)
return -1;
var n = 0;
if (arguments.length > 0)
{
n = Number(arguments[1]);
if (n !== n) // shortcut for verifying if it's NaN
n = 0;
else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0))
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
if (n >= len)
return -1;
var k = n >= 0
? n
: Math.max(len - Math.abs(n), 0);
for (; k < len; k++)
{
if (k in t && t[k] === searchElement)
return k;
}
return -1;
};
}
(copied from MDC)

push_array:
This is native to the Array object in JavaScript:
var someArray = [];
someArray.push(value);
in_array:
This is not native to the Array in JavaScript however some browsers have support for Array.indexOf which can be compared to -1. If that is not supported than you need to iterate over the items.
function inArray(elem, array) {
if (array.indexOf) {
return array.indexOf(elem) > -1;
}
for (var i = 0, length = array.length; i < length; i++) {
if (array[ i ] === elem ) {
return true;
}
}
return false;
}

You have to be using the JavaScript Array object. Then you can use .push().
For find:
How do I check if an array includes an object in JavaScript?

Related

C function substr, PHP extension, strncpy wrong length

My php_substr function should set kpart to a33c5b4b58b26d9f however it instead sets it to a33c5b4b58b26d9fìÿ?꬯wÿÿÿÿ®w.
Any ideas?
long ks;
char *kpart1;
ks = 16;
php_substr("a33c5b4b58b26d9f78293df1c5d5a3bf", &kpart1, 0, ks); // a33c5b4b58b26d9fìÿ?꬯wÿÿÿÿ®w
char *php_substr(char *str, char **ptr, long f, long l)
{
int str_len = strlen(str);
if (!l) {
l=0;
}
if (l!=0) {
if ((l < 0 && -l > str_len)) {
return FALSE;
} else if (l > str_len) {
l = str_len;
}
} else {
l = str_len;
}
if (f > str_len) {
return FALSE;
} else if (f < 0 && -f > str_len) {
f = 0;
}
if (l < 0 && (l + str_len - f) < 0) {
return FALSE;
}
if (f < 0) {
f = str_len + f;
if (f < 0) {
f = 0;
}
}
if (l < 0) {
l = (str_len - f) + l;
if (l < 0) {
l = 0;
}
}
if (f >= str_len) {
return FALSE;
}
if ((f + l) > str_len) {
l = str_len - f;
}
strncpy(*ptr,str+f,l);
return 0;
}
Edited to use malloc and included full working code!
I tried the zend engine emalloc however this didn't seem to work
long ks;
char *kpart1;
ks = 16;
kpart1 = php_substr("a33c5b4b58b26d9f78293df1c5d5a3bf", 0, ks); // a33c5b4b58b26d9f
char *php_substr(char *str, long f, long l)
{
int str_len = strlen(str);
unsigned char *buffer;
if (l!=0) {
if ((l < 0 && -l > str_len)) {
return FALSE;
} else if (l > str_len) {
l = str_len;
}
} else {
l = str_len;
}
if (f > str_len) {
return FALSE;
} else if (f < 0 && -f > str_len) {
f = 0;
}
if (l < 0 && (l + str_len - f) < 0) {
return FALSE;
}
if (f < 0) {
f = str_len + f;
if (f < 0) {
f = 0;
}
}
if (l < 0) {
l = (str_len - f) + l;
if (l < 0) {
l = 0;
}
}
if (f >= str_len) {
return FALSE;
}
if ((f + l) > str_len) {
l = str_len - f;
}
buffer = (char*)malloc(l+1);
strncpy(buffer,str+f,l);
buffer[l]='\0';
return buffer;
}
After trimming out all the testing of the parameters
After editing into a file that compiles/links/runs
this is the resulting code:
#include <stdio.h>
#include <string.h>
#define FALSE (0)
char *php_substr(char *str, char **ptr, long f, long l)
{
strncpy(*ptr,str+f,(size_t)l);
return 0;
}
int main( void )
{
long int ks = 16;
char *kpart1;
php_substr("a33c5b4b58b26d9f78293df1c5d5a3bf", &kpart1, 0, ks); // a33c5b4b58b26d9fìÿ?꬯wÿÿÿÿ®w
printf( "%s\n", kpart1);
}
Notice that the char pointer: kpart1 is not initialized to point to any specific location.
(in this case it contains whatever trash was on the stack. If it were a global variable, it would contian NULL.)
The call to strncpy() is trying to copy the first 16 bytes of the passed in constant to where ever kpart1 happens to be pointing.
The strncpy() results in undefined behaviour and can lead to a seg fault event.
I did not perform an analysis on the manipulation of the passed in variables f and l.
Suggest, as you found, that the pointer: kpart1 needs to be initialized to point to some allocated memory, where that allocated memory needs to be at least l-f+1 in length.

auto-increment alphanumeric php , javascript

I want to make an auto-increment alphanumeric and this is just for output
if i press a button , there is an output AA001 and then i press a button again there is an output AA002
This doesn't use any 'clever' tricks but is shorter and easier to understand and tweak. It also uses numbers so it doesn't grow the length of the string as quickly. It increments from 0-9 then a-z, but it is intended that you should feed in 'a' to start with. Output always starts with an alphabet character, as long as your input also starts with an alphabet character, so it can be used as PHP variable names
var nextVarName = function(str) {
// Position of char to change.
var change = str.length - 1;
// The value of that char.
var change_char = str[change];
// Number of zeros to append when flipping.
var zeros = 0;
// Iterate backwards while there's a z (flipping).
while (change_char == 'z') {
// Increase the length of appended zeros
zeros++;
// Move the char to change back.
change_char = str[--change];
}
if (change_char == undefined) {
// Full flip - string increases in length.
str = 'a' + Array(str.length + 1).join("0");
} else {
// Normal increment with partial flip and 9->a handling.
str = str.substr(0, change)
+ (change_char == '9' ? 'a' : String.fromCharCode(str.charCodeAt(change) + 1))
+ Array(zeros + 1).join('0');
}
return str;
};
var vname = 'a';
for (var i = 0; i < 5; i++) {
vname = nextVarName(vname);
console.log(vname);
}
The results will be as follows:
z ---> a0
9z ---> a0 (unexpected input)
ab1zde ---> ab1zdf
abcdzz ---> abce00
zzzzz ---> a00000
abcyzz ---> abcz00
9000 ---> 9001 (unexpected input)
https://jsfiddle.net/e20kfvky/
The schedule of how many variables (that start with an alphabet char) are created of each length is as follows:
1: 26, 2: 936, 3: 33696, 4: 1213056 ... n: 36 ^ n - 10 * 36 ^ (n - 1)
The following code will generate a token that you can advance by one. It uses some small classes to make it modular. The function you attach to the button will call the function next on the token as shown in the very bottom.
//Element in a big token
function Increment(startval, endval) {
this.start = startval.charCodeAt(0);
this.cur = this.start;
this.end = endval.charCodeAt(0);
//Returns the current value
this.get = function() {
if (this.cur <= this.end) {
return String.fromCharCode(this.cur);
} else {
return null;
}
}
//Advances the value we will show
this.next = function() {
this.cur += 1;
return this.get();
}
//Reset it to the beginning
this.reset = function() {
this.cur = this.start;
}
}
function Token() {
this.token = [
new Increment("A", "Z"),
new Increment("A", "Z"),
new Increment("0", "9"),
new Increment("0", "9"),
new Increment("0", "9")
];
this.get = function() {
return this.token.map(function(cur) {
return cur.get();
}).join("");
}
this.next = function() {
//From the back to the front
for (var i = this.token.length - 1; i >= 0; i--) {
if (this.token[i].next() == null) {
//If we exhausted all possible values, continue
this.token[i].reset();
} else {
//Until we advance one that has still values left
break;
}
}
return this.get();
}
}
//Now we are just showing off...
var a = new Token();
for (var i = 0; i < 15; i++) {
console.log(a.next());
}
const getNextAlphaString = function (str) {
"use strict";
str=str.toUpperCase();
let chars;
chars = str.split("");
const strLen = str.length;
let continueIncermenting = true;
for (let i = strLen - 1; i >= 0; i = i - 1) {
let asciiVal;
asciiVal = chars[i].charCodeAt(0);
if (isNaN(asciiVal)) {
return str;
}
if (continueIncermenting === true) {
if (asciiVal >= 48 && asciiVal < 57) {
chars[i] = String.fromCharCode(asciiVal + 1);
continueIncermenting = false;
break;
} else if (asciiVal == 57) {
chars[i] = '0';
continueIncermenting = true;
}
if (asciiVal >= 65 && asciiVal < 90) {
chars[i] = String.fromCharCode(asciiVal + 1);
continueIncermenting = false;
break;
} else if (asciiVal == 90) {
chars[i] = String.fromCharCode(65);
continueIncermenting = true;
}
} else {
if (asciiVal == 90) {
continueIncermenting = true;
chars[i] = String.fromCharCode(65);
}
if (asciiVal == 57) {
continueIncermenting = true;
chars[i] = '0';
}
}
}
if (continueIncermenting === true) {
let firstAcii = chars[0].charCodeAt(0);
if (isNaN(firstAcii)) {
return str;
}
if ((firstAcii >= 65 && firstAcii <= 90) || (firstAcii >= 97 && firstAcii <= 122)) {
return 'A' + chars.join('').toUpperCase();
}
if (firstAcii >= 48 && firstAcii <= 57) {
return '0' + chars.join('').toUpperCase();
}
}
return chars.join('').toUpperCase();
};
The results will be as follows:
ab1zde ---> AB1ZDF
abcdzz ---> ABCEAA
zzzzz ---> AAAAAA
abcyzz ---> ABCZAA
9000 ---> 9001

I would like to compare to set of text and get how similar/relevant they are to each other, I use similar_text(), but i found out its not as accurate

I would like to compare to set of text and get how similar/relevant they are to each other, I use similar_text(), but i found out its not as accurate. Thank you.
For example the following text gives me 66%
Text1: Innovation game, eat, sleep, breathe innovation. It love creativity & passion power Internet drives . We understand time greatest asset, challege meet deadline.
Text2: Soviet union communist policy; Germany league organization disguise enermies beaten wanted.
My code is as below:
echo $student_answer = removeCommonWords($answer)."<br><br>";
$student_answer = strip_tags($student_answer);
echo $memo = removeCommonWords2($memo)."<br><br>";
echo similar_text($memo, $student_answer);
You can use the JS version:
http://phpjs.org/functions/similar_text/
The JS code shows you the precent code (you can modify the code):
return (sum * 200) / (firstLength + secondLength);
I hope this will help you!
EDIT:
How to use similar_text in JS?
Create a file named similar_text.js and copy&paste this code in it:
function similar_text (first, second, percent) {
// http://kevin.vanzonneveld.net
// + original by: Rafał Kukawski (http://blog.kukawski.pl)
// + bugfixed by: Chris McMacken
// + added percent parameter by: Markus Padourek (taken from http://www.kevinhq.com/2012/06/php-similartext-function-in-javascript_16.html)
// * example 1: similar_text('Hello World!', 'Hello phpjs!');
// * returns 1: 7
// * example 2: similar_text('Hello World!', null);
// * returns 2: 0
// * example 3: similar_text('Hello World!', null, 1);
// * returns 3: 58.33
if (first === null || second === null || typeof first === 'undefined' || typeof second === 'undefined') {
return 0;
}
first += '';
second += '';
var pos1 = 0,
pos2 = 0,
max = 0,
firstLength = first.length,
secondLength = second.length,
p, q, l, sum;
max = 0;
for (p = 0; p < firstLength; p++) {
for (q = 0; q < secondLength; q++) {
for (l = 0;
(p + l < firstLength) && (q + l < secondLength) && (first.charAt(p + l) === second.charAt(q + l)); l++);
if (l > max) {
max = l;
pos1 = p;
pos2 = q;
}
}
}
sum = max;
if (sum) {
if (pos1 && pos2) {
sum += this.similar_text(first.substr(0, pos2), second.substr(0, pos2));
}
if ((pos1 + max < firstLength) && (pos2 + max < secondLength)) {
sum += this.similar_text(first.substr(pos1 + max, firstLength - pos1 - max), second.substr(pos2 + max, secondLength - pos2 - max));
}
}
if (!percent) {
return sum;
} else {
return (sum * 200) / (firstLength + secondLength);
}
}
In your put the following line:
<script type="text/JavaScript" src="YOUR_PATH/similar_text.js"></script>
Now you can use it in your body:
<script>
similar_text('Hello World!', 'Hello phpjs!');
</script>
It will output 7.
Hope this wil help you!

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)

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');

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