PHP equivalent of list and explode in javascript

Question

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Javascript equivalent of PHP’s list()

I want an equivalent of this line but in JavaScript :

<?php list($Id, $Iduser, $Idmany) = explode("," , $IdALL); ?>

Where :

$IdALL = '1, 2, 3';

Is there any way to do that with JavaScript and that could be supported on all modern browsers ?

JavaScript 1.7 has [destructuring assignments](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7#Destructuring_assignment_%28Merge_into_own_page.2Fsection%29) but only gecko has any real implementation of JavaScript 1.7 and [webkit behaves badly](https://bugs.webkit.org/show_bug.cgi?id=23097). — Paul S., Dec 01 '12 at 11:34
@MuthuKumaran That just blows my mind. I hope it becomes widely supported soon. — Asad Saeeduddin, Dec 01 '12 at 11:37

Asad Saeeduddin · Accepted Answer · 2012-12-01T12:03:40.663

7

var values = "1, 2, 3".split(", ");
var keys = ["Id", "Iduser", "Idmany"];
var final = {};

for(var i = 0; i < values.length; i++){
    final[keys[i]] = values[i];
}

Of course, at the expense of readability you could do all this in the for statement:

for(var i = 0, values = "1, 2, 3".split(", "), keys = ["Id", "Iduser", "Idmany"], final = {}; i < values.length; i++){
    final[keys[i]] = values[i];
}

The variables can then be accessed as follows:

alert(final.Id);
alert(final.Iduser);
alert(final.Idmany);

edited Dec 01 '12 at 12:03

answered Dec 01 '12 at 11:31

Asad Saeeduddin

46,193
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Thank you Asad, but how could I use variable out of the "for" ? I alert them inside the for and it works, but outside it doesn't ! – Sami El Hilali Dec 01 '12 at 11:59
2

@SamiElHilali You have to access them as properties of the `final` object. I have added this to my answer. – Asad Saeeduddin Dec 01 '12 at 12:02
You are just awesome. thanks a lot ! – Sami El Hilali Dec 01 '12 at 13:12

score 1 · Answer 2 · edited May 23 '17 at 12:02

No, JavaScript currently has no equivalent of the list construct (which is called a "destructuring assignment"). You have to assign the variables individually. ES.next may very well have something for this, but not the current ES5 (or ES3 on older browsers).

So the best you could do is a bit more awkward:

var idAll = "1, 2, 3";
var parts = idAll.split(/\s*,\s*/);
var id = parts[0];
var idUser = parts[1];
var idMany = parts[2];

Note that the IDs will be strings; if you want them to be numbers, you'll have to parse them (parseInt is one option, putting a + in front of parts[0] et. al. is another; this answer goes into details).

That idea with the '+' is great. Thanks. – Hafenkranich Sep 14 '16 at 19:06 — Hafenkranich, Sep 14 '16 at 19:06

score 1 · Answer 3 · answered Dec 01 '12 at 11:31

1

Please see the site: http://phpjs.org/functions/

Here you want all the functions available in php to js.

answered Dec 01 '12 at 11:31

Chirag Patel

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4
14

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This cannot be done even with stuff from that site. JavaScript doesn't have the necessary language structure to allow you to assign multiple variables at the same time (and it would require language support, you can't just write a function to do it). – T.J. Crowder Dec 01 '12 at 11:34
1

This doesn't answer the question. I couldn't find `list` function from your link. – Muthu Kumaran Dec 01 '12 at 11:40
@Muthu Please list() implementation in Javascipt please follow the link : http://solutoire.com/2007/10/29/javascript-left-hand-assignment/ – Chirag Patel Dec 03 '12 at 05:44

PHP equivalent of list and explode in javascript

3 Answers3