Load a javascript object with its functions from file

Question

In a website I would like to use a javascript function to load an object from a file. I initially tried using JSON but my javascript object is complex and has functions for some parameters. Is there a way I can load the object from a file?

myObject.js (not valid JSON as it has a function)

{
    "value1": "some value",
    "functionValue": function() { 
        return "function value"; 
    }
}

function to load object from file

function getFileObject(fileURL) {
    var myObject;

    $.ajax({
        url: fileURL,
        type: "GET",
        datatype: 'json',
        async: false,
        success: function (result) {
            myObject = result;
        }
     });

     return myObject;
}

Denys Séguret · Accepted Answer · 2012-09-28 10:29:22Z

1

If you really have to pass a function implementation, simply don't use JSON and eval your text.

function fetchFileObject(callback) {
    $.ajax({
        url: value,
        type: "GET",
        datatype: 'text',
        success: function (result) {
            var myObject = eval('('+result+')');
            callback(myObject); // do something  with myObject
        }
     });

}

But... that's not something I'd consider myself.

Beware that you really shouldn't use async: false. It's now deprecated and there never was any good reason to use it. That's the reason why I refactored your code to accept a callback.

answered Sep 28, 2012 at 10:29

Denys Séguret

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Comments

Community · Accepted Answer · 2017-05-23 10:24:52Z

0

Have you tried to import myobject.js using the

tag in the header of your web page and assigning the object in the myobject.js file to a variable which you can use in the other .js file?

This should work for a single file (I have not tested it myself), but if you want to import your file dynamically at the client side, the solution from @dystroy might be more suitable.

edited May 23, 2017 at 10:24

CommunityBot

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answered Sep 28, 2012 at 10:38

Darian Lewin

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