What is the best way to trim a json data? - php

This is what I am currently doing to trim all of my value. It is ugly and a too repetitive.
var strHTML = '';
$.getJSON('info.php',
function(data) {
$.each(data, function(i, item) {
strHTML += $.trim(item.fname) +
$.trim(item.lname) +
$.trim(item.address) +
$.trim(item.phone) +
...(about 10 more of these);
});
});
There ought to be a better way to do this.


A for...in example, with hasOwnProperty:
var obj = {
foo: ' bar',
blahblah: ' ahahaha '
};
var arr = [];
for (key in obj) {
if (obj.hasOwnProperty(key)) {
arr.push($.trim(obj[key]));
}
}
alert(arr.join(','));


I'd say you should trim the data on the PHP-side, as it's your PHP script that generates it 1.
Basically : make sure your info.php script generates correct data.
In PHP, you can use the trim() function.
And if your data is stored in an array, you can apply that function to all items of that array using the array_map() function :
$data = array_map('trim', $data);
As a consequence, I will add the PHP tag to this question


If you want all properties of item to be trimmed you can use the for (props in item) {} -loop to loop through all of them. Because u can use this on all javascript-object you can create a function that does the trimming on all properties of an object.

Related

How to pass arrays through JSON php

I'd like to pass arrays through JSON like this:
<?php
for(i=0;i<5;i++) {
$arrayA[i] = "A" . i;
$arrayB[i] = "B" . i;
}
echo json_encode($arrayA,$arrayB);
?>
I know it's not possible, but is there other way to pass dynamicly loaded arrays and read them in javascript after that?

Just put both array in another array.
$returnArr = array($arrayA,$arrayB);
echo json_encode($returnArr);
On JS side just decode with a library of your choice and access the returned array like any normal array.

echo json_encode(array('arrayA' => $arrayA, 'arrayB' => $arrayA));

Just create wrapper for your arrays:
for(i=0;i<5;i++) {
$arrayA[i] = "A" . i;
$arrayB[i] = "B" . i;
}
$arrayC = array($arrayA,$arrayB);
echo json_encode($arrayC);
On jQuery side:
$.getJSON('ajax/yourPhpFile.php', function(data) {
$.each(data, function(key, val) {
// each `val` is one of the arrays you passed from php
});
});

You can use AJAX to load up a script that will return a PHP generated array. If you're using jQuery, you call it using either $.get() or $.getJSON(). You can read up on PHP JSON manual here http://php.net/manual/en/book.json.php and on jQuery .getJson() function here http://api.jquery.com/jQuery.getJSON/

Convert JSON to multidimensional JavaScript array

I receive from the server a JSON like the following:
{"0":{"0":"image1.jpg","1":"texthere","2":"0"},"1":{"0":"image66.jpg","1":"texthere","2":"1"},"2":{"0":"image12.jpg","1":"texthere","2":"2"},"3":{"0":"image44.jpg","1":"texthere","2":"3"},"4":{"0":"image34.jpg","1":"texthere","2":"4"},"5":{"0":"image33.jpg","1":"texthere","2":"5"},"6":{"0":"image21.jpg","1":"texthere","2":"6"},"7":{"0":"image32.jpg","1":"texthere","2":"7"},"8":{"0":"image13.jpg","1":"texthere","2":"8"},"9":{"0":"image11.jpg","1":"texthere","2":"9"},"10":{"0":"image03.jpg","1":"texthere","2":"10"},"length":"12"}
The developer who coded this used JSON_FORCE_OBJECT as a parameter of the json_encode method in PHP.
In JavaScript is there any "magics" (that is, not a custom function) to convert this structure to a multidimensional array?
I would want something like:
[["image1.jpg","texthere","2"],["image66.jpg","texthere","1"]]...
Disclaimers:
- I'm looking for a native implementation (not JQuery);
- The PHP can be eventually changed (if needed);
Any help is appreciated, thanks in advance.

The easiest way I can think of to do what you want is to use regular expressions to convert the JSON from object literals to array literals.
Unfortunately, Simon Cowell is more magical than this approach.
//I don't know why you don't want a custom function.
function dataToArray(data)
{
data = data.replace(/"[0-9]+":/g,""); //Remove all index keys
data = data.replace(/,"length":"[0-9]+"/g,""); //Remove length key-value pair
data = data.replace(/{/g,"["); //Change the left brackets
data = data.replace(/}/g,"]"); //Change the right brackets
return JSON.parse(data);
}

Not magic, but you can loop over the data and test what type of value it has.
A basic example would be as follows. It doesn't have the error checking I'd want in production code though.
var data = {"0":{"0":"image1.jpg","1":"texthere","2":"0"},"1":{"0":"image66.jpg","1":"texthere","2":"1"},"2":{"0":"image12.jpg","1":"texthere","2":"2"},"3":{"0":"image44.jpg","1":"texthere","2":"3"},"4":{"0":"image34.jpg","1":"texthere","2":"4"},"5":{"0":"image33.jpg","1":"texthere","2":"5"},"6":{"0":"image21.jpg","1":"texthere","2":"6"},"7":{"0":"image32.jpg","1":"texthere","2":"7"},"8":{"0":"image13.jpg","1":"texthere","2":"8"},"9":{"0":"image11.jpg","1":"texthere","2":"9"},"10":{"0":"image03.jpg","1":"texthere","2":"10"},"length":"12"};
function data_to_array(data) {
var array = [];
for (var key in data) {
var value = data[key];
if (typeof value === 'string') {
array[key] = value;
} else {
array[key] = data_to_array(value);
}
}
return array;
}
var array = data_to_array(data);
console.log(array);
Make sure you add hasOwnProperty checks if your object prototypes might be messed with. You should probably also add a check to make sure that only integer keys are added to the array.

There is no built-in functions. If you have JSON string, you can do string replacement, otherwise you have to loop as shown below.
var dataObject = {"0":{"0":"image1.jpg","1":"texthere","2":"0"},"1":{"0":"image66.jpg","1":"texthere","2":"1"},"2":{"0":"image12.jpg","1":"texthere","2":"2"},"3":{"0":"image44.jpg","1":"texthere","2":"3"},"4":{"0":"image34.jpg","1":"texthere","2":"4"},"5":{"0":"image33.jpg","1":"texthere","2":"5"},"6":{"0":"image21.jpg","1":"texthere","2":"6"},"7":{"0":"image32.jpg","1":"texthere","2":"7"},"8":{"0":"image13.jpg","1":"texthere","2":"8"},"9":{"0":"image11.jpg","1":"texthere","2":"9"},"10":{"0":"image03.jpg","1":"texthere","2":"10"},"length":"12"};
function getArray(object){
var array = [];
for(var key in object){
var item = object[key];
array[parseInt(key)] = (typeof(item) == "object")?getArray(item):item;
}
return array;
}
var dataArray = getArray(dataObject);

foreach for javascript, json array

I have a JSON array that looks like this:
[{"RegDate":"31-03-2011"},{"RegDate":"29-07-2011"},{"RegDate":"09-08-2011"},{"RegDate":"09-08-2011"},{"RegDate":"09-08-2011"},{"RegDate":"12-08-2011"},{"RegDate":"15-08-2011"},{"RegDate":"15-08-2011"},{"RegDate":"23-08-2011"},{"RegDate":"07-09-2011"},{"RegDate":"09-09-2011"},{"RegDate":"13-10-2011"},{"RegDate":"13-10-2011"},{"RegDate":"13-10-2011"},{"RegDate":"25-10-2011"},{"RegDate":"25-10-2011"},{"RegDate":"03-11-2011"},{"RegDate":"03-11-2011"},{"RegDate":"11-11-2011"},{"RegDate":"16-11-2011"},{"RegDate":"18-11-2011"},{"RegDate":"21-11-2011"},{"RegDate":"02-12-2011"},{"RegDate":"02-12-2011"},{"RegDate":"12-12-2011"}]
The code to get this json array is as of the following:
var unavailableDates1 = jQuery.parseJSON('<?php echo json_encode($noticesDates) ?>');
I am trying too get all of the dates in that array (which was originally a multidimensional array), and put it inside one array:
var unavailableDates = ["9-3-2012", "14-3-2012", "15-3-2012"]; for example
I am unsure of how to do this, I have tried a foreach but wasn't successful.
All help will be appreciated.

First of all, that parseJSON is unnecessary and actually dangerous. Take it out:
var unavailableDates1 = <?php echo json_encode($noticesDates) ?>;
Then, just use jQuery.map:
var unavailableDates = $.map(unavailableDates1, function(item) {
return item.RegDate;
});
Using a string like that is dangerous for the following three objects, for example:
{"key":"Backslash here: \\"}
{"key":"I'm a horse!"}
{"key":"Some\\backslash"}
They become, respectively:
SyntaxError: Unexpected end of input (Single escape escapes end of string)
SyntaxError: Unexpected identifier (Unescaped single quote breaks out of the string, actually an XSS vulnerability)
Object
key: "Someackslash" (\\b becomes the \b backspace control character)
__proto__: Object
You could escape it again, but there's no need; valid JSON is always a valid JavaScript object, and you can trust your own PHP not to include injection code in there.

var justDates = [];
for (var i=0; i < unavailableDates1.length; i++) {
justDates.push(unavailableDates1[i]['RegDate']);
}
Each Object ({'RegDate:'date'}) is an item in a javascript array. To get an item you use a numerical index. so to get the first item would be theArray[0] this would give you {"RegDate":"31-03-2011"}. Then to get that particular date string you just have to use the key theArray[0]['RegDate']!. So since you want to go through every member of a list, you should get the list length using .length.
For loops are usually used for this type of iteration and not for..in. because for in can access properties that are undesired! http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/

have a look at how to iterate over an array.
You can do something like:
dates = new Array();
unavailableDates1.forEach(function (obj){
dates.push(obj.RegDate);
};

Try the following:
JavaScript:
var x = [{"RegDate":"31-03-2011"},{"RegDate":"29-07-2011"},{"RegDate":"09-08-2011"},{"RegDate":"09-08-2011"},{"RegDate":"09-08-2011"},{"RegDate":"12-08-2011"},{"RegDate":"15-08-2011"},{"RegDate":"15-08-2011"},{"RegDate":"23-08-2011"},{"RegDate":"07-09-2011"},{"RegDate":"09-09-2011"},{"RegDate":"13-10-2011"},{"RegDate":"13-10-2011"},{"RegDate":"13-10-2011"},{"RegDate":"25-10-2011"},{"RegDate":"25-10-2011"},{"RegDate":"03-11-2011"},{"RegDate":"03-11-2011"},{"RegDate":"11-11-2011"},{"RegDate":"16-11-2011"},{"RegDate":"18-11-2011"},{"RegDate":"21-11-2011"},{"RegDate":"02-12-2011"},{"RegDate":"02-12-2011"},{"RegDate":"12-12-2011"}];
var ary = new Array();
for (foo in x) {
ary.push(x[foo].RegDate);
}
console.log(ary);
jsFiddle example.

I noticed you tag jquery in here as well so, here's a jquery solution:
http://jsfiddle.net/aztechy/DK9KM/
var foo = [
{"RegDate":"31-03-2011"},
{"RegDate":"29-07-2011"},
{"RegDate":"09-08-2011"},
{"RegDate":"09-08-2011"}
];
var datesArray = [];
$.each(foo, function() {
datesArray.push(this.RegDate);
});
console.log(datesArray);​

Try This, it may works.
var unavailableDates = [];
for(var i = 0; i < unavailableDates1.length; i++){
unavailableDates[i] = unavailableDates1[i].RegDate;
}

for(var i=0;i<unavailableDates.length;i++) {
unavailableDates[i] = unavailableDates[i].RegDate;
}

Reading an AJAX HTML response into a JavaScript array

Okay, so I have an AJAX function that gets a JSON encoded string from a remote PHP file, the response looks like so..
{"zone_id":"1","zone_name":"Test Zone 1","zone_tilemap":"0,0,0,0*0,0,0,0*0,0,0,0*0,0,0,0","zone_objectmap":"0,0,0,0*0,0,0,0*0,0,0,0*0,0,0,0"}
I won't go too far into what this code is about, but the part I need right now is the tilemap, I need to somehow read those numbers into a mutlidimensional JavaScript array so it looks like so...
var someArray = new Array([0,0,0,0],[0,0,0,0],[0,0,0,0],[0,0,0,0]);
I know that in PHP there is an explode function that can break the string apart by the asterix and then by the commas and put the results into an array, but I'm not great at JavaScript and have no idea how to accomplish this, any ideas?
My AJAX function so far...
function getLocalZoneInformation(){
$.ajax({
type: 'POST',
url: "./inc/backend/game.functions.php?getLocalZoneInformation=" + localCharacterZoneID,
success: function(response){
var localZoneInformation = jQuery.parseJSON(response);
localZoneID = localZoneInformation.zone_id;
localZoneName = localZoneInformation.zone_name;
localZoneTileMap = localZoneInformation.zone_tilemap;
localZoneObjectMap = localZoneInformation.zone_objectmap;
}
});
}

var tmp = localZoneTileMap.split("*");
var someArray = [];
for (i = 0; i < tmp.length; i++) {
someArray.push(tmp[i].split(","));
}
If using JavaScript 1.6 or newer, you can use the map() method
var someArray = localZoneTileMap.split("*").map(function(tileMap) {
return tileMap.split(",");
});

Try this:
zones = localZoneName.zone_tilemap.split("*")
out_array = []
for (i in zones) {
out_array.push(zones[i].split(","))
}
Result will be saved in out_array var.

Create a typecast (array)
loop your object
push each elem to the array

JavaScript: Remove keys from json object

Example output from PHP:
{
"RootName_0":{"Id":1,"ValId":1,"Value":"Colour","Text":"Blue"},
"RootName_1":{"Id":1,"ValId":2,"Value":"Colour","Text":"Red"}
}
How can I use Backbone.js or jQuery to only have:
[
{"Id":1,"ValId":1,"Value":"Colour","Text":"Blue"},
{"Id":1,"ValId":2,"Value":"Colour","Text":"Red"}
]
If it's easier to use PHP to edit the JSON, then so be it.

Well, in PHP it would be easy, just use array_values() on the initial array so that it 'forgets' the array indexes (which by the way, is what 'RootName_X' is called in your case:
$newvalue = array_values( (array)$value );
echo json_encode($newvalue);
In javascript, it's a bit trickier, but it would be on the lines of:
var newvalue = [];
for(var root in value)
newvalue.push(value[root]);
The question title is was a bit confusing since these are certainly not tags.

No need for jquery or Backbone:
var obj = {
"RootName_0":{"Id":1,"ValId":1,"Value":"Colour","Text":"Blue"},
"RootName_1":{"Id":1,"ValId":2,"Value":"Colour","Text":"Red"}
};
var colors = [];
for(var key in obj){
colors.push(obj[key]);
};
The value you want is now in the colors array.

Using ES5 (modern browsers) you could do:
Object.keys(received).map(function(key) {
return received[key];
});
Basically, converting the object into an array of its keys, then replacing each key with the value.

In javascript, if myFirstVar contains the initial object, then do:
mySecondVar = [ myFirstVar.RootName_0, myFirstVar.RootName_1 ];

Once the JSON has been parsed, do it using jQuery's jQuery.map, and borrowing the global Object function...
var arr = $.map(obj,Object);
EDIT:
If you do it in JavaScript, you should be aware that the objects may not remain in their original order.
You can remedy this if the RootName_n keys are sequential, and you know the n of the last key.
var last_key = 20;
var arr = [];
for(var i = 0; i <= last_key; i++)
arr.push( obj['RootName_' + i] );

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