Build parameter array in javascript

Question

I want to do this:

$.getJSON("myscript.php", {0: info[0].value, 1: info[1].value, 2: info[2].value ......});

How do I build a loop to create the second object (the parameters)? I've tried the following, which doesn't work:

var n = info.length;
var params = new Array();
for(i=0; i<n; i++) params[i] = info[i].value;
$.getJSON("myscript.php", params);

The resulting GET to myscript.php becomes myscript.php?undefined=&undefined=&...

It would be more idiomatic to do $.getJSON("myscript.php, { data: params });. Then in PHP $_GET['data'] will be the array. — Barmar
– Barmar, Commented May 31, 2013 at 18:29
From the documentation about the data parameter: "A plain object or string that is sent to the server with the request.". An array is neither a plain object nor a string. — Felix Kling
– Felix Kling, Commented May 31, 2013 at 18:36

Arun P Johny · Accepted Answer · 2013-06-01 02:04:19Z

4

Create params as an object instead of an array

var n = info.length;
var params = {};
for(i=0; i<n; i++) params[i] = info[i].value;
$.getJSON("myscript.php", params);

If you want array to work

var n = info.length;
var params = new Array();
for(i=0; i<n; i++){ 
    params[i] = {
        name: i, 
        value: info[i].value
    }
};
$.getJSON("myscript.php", params);

edited Jun 1, 2013 at 2:04

answered May 31, 2013 at 18:18

Arun P Johny

389k68 gold badges532 silver badges532 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

David Over a year ago

Great, that works. Thank you. By the way, why doesn't the array work?

ahuth Over a year ago

@Eric Maybe for the array to work, you need to push items to it: params.push(info[i].value);? As @ArunPJohny and @FelixKling pointed out, though, you have to use an object.

Collectives™ on Stack Overflow

Build parameter array in javascript

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related