Add jQuery.parseJSON to jQuery 1.3

Question

Is it possible to extend jQuery 1.3 to include the parseJSON function from 1.4.1+, and have it function the same way as it does in jQuery 1.4.1+? How would I go about that?

I have some sites where I have to use jQuery 1.3, but I have a tool that requires parseJSON, which was only introduced in jQuery 1.4.1. I vaguely know that I should be taking parseJSON from 1.4.1+ and trying to make it a plugin, but I don't know how to do that.

@gov my hands are tied as to the functions that are included; I need it to be able to use parseJSON. I know, its ridiculous. — Yahel
– Yahel, Commented Dec 7, 2010 at 22:49

Yahel · Accepted Answer · 2012-03-21 17:29:07Z

11

You could make it a plugin like this:

$.extend({
    error: function( msg ) { throw msg; },
    parseJSON: function( data ) {
        if ( typeof data !== "string" || !data ) {
            return null;
        }    
        data = jQuery.trim( data );    
        if ( /^[\],:{}\s]*$/.test(data.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, "@")
            .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, "]")
            .replace(/(?:^|:|,)(?:\s*\[)+/g, "")) ) {    
            return window.JSON && window.JSON.parse ?
                window.JSON.parse( data ) :
                (new Function("return " + data))();    
        } else {
            jQuery.error( "Invalid JSON: " + data );
        }
    }
});

You can test it here.
This code's adopted from jQuery 1.4.4 - found here. After including the above with jQuery 1.3 as your question has, just use $.parseJSON() as you normally would...or in your case, just include the plugins after the above code and $.parseJSON() will be present for them to use.

edited Mar 21, 2012 at 17:29

Yahel

37.4k23 gold badges108 silver badges156 bronze badges

answered Dec 7, 2010 at 22:40

Nick Craver

631k138 gold badges1.3k silver badges1.2k bronze badges

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

1 Comment

mr_urf Over a year ago

Only one slight issue if you are using 1.3.x ... jQuery.error wasn't added until 1.4.1 :) Adding: - error: function( msg ) { throw msg; }, above the parseJSON definition will fix that though.

Jakob · Accepted Answer · 2010-12-07 22:40:15Z

1

You could use Crockfords implementation: https://github.com/douglascrockford/JSON-js

Or here, for a direct link: https://github.com/douglascrockford/JSON-js/blob/master/json_parse.js

answered Dec 7, 2010 at 22:40

Jakob

24.5k9 gold badges48 silver badges58 bronze badges

Comments

Jesper Haug Karsrud · Accepted Answer · 2010-12-07 22:40:33Z

0

Is it impossible for you to edit the code that uses 1.3? The jQuery.json plugin provides $.toJSON and $.evalJSON, which are equivalent to the new ones from 1.4. You could try to use the native JSON.parse and JSON.stringify in browsers where it's supported. In older browser you'll need to include JSON2 to add JSON.parse and JSON.stringify support to these browsers.

answered Dec 7, 2010 at 22:40

Jesper Haug Karsrud

1,1936 silver badges10 bronze badges

1 Comment

Yahel Over a year ago

No, its unfortunately not possible. My hands are tied on the contents of the code I'm receiving from this plugin.

Collectives™ on Stack Overflow

Add jQuery.parseJSON to jQuery 1.3

3 Answers 3

1 Comment

Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

1 Comment

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related