How to make javascript variable global

Question

I need to make this data variable global:

$.ajax({
    url: "get_data.php",
    cache: false,
    dataType: 'json',
    data: {},
    success: function(data) {
        for(var i = 0; i < data.results.length; i++) {
            if(my_data.hasOwnProperty(data.results[i].id)) {
                my_data[data.results[i].id].name = data.results[i].name;
            }
        }
    });

I want to have this globally declared. Do I need to declare it as array?

Niet the Dark Absol · Accepted Answer · 2012-07-01 16:30:58Z

31

Any variable can be "made global" by attaching it as a property of the window.

window.data = data;

You can now access data as a global variable.

answered Jul 1, 2012 at 16:30

Niet the Dark Absol

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5 Comments

Nimphious Over a year ago

Also useful is self in case you don't have access to the DOM, such as from a Web Worker.

user123_456 Over a year ago

And where do I put that? outside the ajax scope? I tried that but It says that data is not defined

Niet the Dark Absol Over a year ago

Put it wherever the original data variable is.

user123_456 Over a year ago

can you please give me an example on my posted question. As I have tried and it is not working. I want to use this data variable as in global scope. Please help

Niet the Dark Absol Over a year ago

Inside the success function, since that's where data is defined.

David G · Accepted Answer · 2012-07-01 16:32:04Z

0

Set a variable equal to what you wish data to be equal to. And when giving data its value, reference the variable. Like this:

var obj = {};

$.ajax({
    // ....

    data: obj,

    // ....
});

answered Jul 1, 2012 at 16:32

David G

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