jQuery function as a string with arguments as Array (JavaScript "apply()" equivalent for jQuery elements)

Question

I would like to call a jQuery function into a jQuery plugin, with its name as a string, and its arguments as an object (Array). I'm looking for a kind of equivalent to the JavaScript "apply" function in jQuery.

I had to find a workaround, but it's really dirty and limited. Here it is :

//funcName is the name of the function I want to call
//funcArgs is an Array of arguments
//$(this) is a jQuery element
switch(funcArgs.length) {
    case 1:
        $.fn[funcName] && $(this)[funcName](funcArgs[0]);
        break;
    case 2:
        $.fn[funcName] && $(this)[funcName](funcArgs[0], funcArgs[1]);
        break;
    //...
    default:
        $.fn[funcName] && $(this)[funcName]();
}

Could you please help me to make it unlimited ? (Without any switch...)

Thank you very much,

T.J. Crowder · Accepted Answer · 2014-01-18 22:15:33Z

3

jQuery is a library, not a language. The language you're using is JavaScript, and so apply is exactly what you want:

var $this = $(this);
$this[funcName].apply($this, funcArgs);

Or

$.fn[funcName].apply($(this), funcArgs);

...since $.fn is the prototype underlying jQuery instances.

answered Jan 18, 2014 at 22:15

T.J. Crowder

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1 Comment

Corentin Over a year ago

My post was not clear enough. I know jQuery is a library and JavaScript a language, but I didn't know how to use "apply" with it. You perfectly answered me! Thank you very much.

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