Jquery/JS: Call a function of Jquery-function outside Jquery-function

Question

(function($){
    $.fn.the_func = function() {

        function my_func(){
            alert('it works');
        }

        my_func();

        // other code

    };
})(jQuery);

$(window).load(function(){
    my_func(); // This way?
    $.the_func().my_func(); // Or this way? No?
    $.the_func.my_func(); // No?
    // ?
});

$(document).ready(function(){
    $('div').the_func();
});

How can I call this function outside the function which wraps it?
I want to call my_func() like in this code-example.
(the window-load function is just an example.)
I want to call my_func() from "everywhere" without executing other functions or code within the_func(). BUT I want to use the variables of the_func().
With my_func() I want to update values which are stored in parameters of the_func().

How about calling it like $("div").the_func("my_func")? Would that work? I don't mean with your current solution...I mean if you would be okay with that syntax, because that's the way I know hot to structure it to make it work as you want — Ian
– Ian, Commented Nov 29, 2012 at 14:22

Ian · Accepted Answer · 2012-11-29 15:03:00Z

2

Here's an example of how I usually write a plugin and could applied to your situation:

http://jsfiddle.net/pMPum/1/

(function ($) {
    function my_func(element) {
        console.log("it works: " + element.innerHTML);
    }

    var methods = {
        init: function (options) {
            console.log("from init");
            console.log("options for init: " + JSON.stringify(options));
            my_func(this);
        },

        my_func: function (options) {
            console.log("from my_func");
            console.log("options for my_func: " + JSON.stringify(options));
            my_func(this);
        }
    };

    $.fn.the_func = function (method) {
        var args = arguments;
        var argss = Array.prototype.slice.call(args, 1);

        return this.each(function () {
            if (methods[method]) {
                methods[method].apply(this, argss);
            }
            else if (typeof method === "object" || !method) {
                methods.init.apply(this, args);
            }
            else {
                $.error("Method " + method + " does not exist on jQuery.the_func");
            }
        });
    };
})(jQuery);

$(document).ready(function () {
    $("div").the_func({    // Same as passing "init" and { } as params
        test: "testing"
    });
});

Notice how I made a generic my_func function inside the scope that can be called. The my_func method in methods is what is exposed to the world through the plugin syntax .the_func() and the my_func function is private and inaccessible directly.

The syntax for calling different methods is the same as most/plenty jQuery plugins.

edited Nov 29, 2012 at 15:03

answered Nov 29, 2012 at 14:44

Ian

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2 Comments

John Doe Smith Over a year ago

thx. but how do i call "my_func" inside the "init"-function? ..why do you use "return this.each(func…)"?

Ian Over a year ago

@JohnDoeSmith Just updated my answer. And I use return this.each so that chaining may occur with the jQuery plugin call. So you could do something like $("div").the_func("method").addClass("something").show(); - it makes it so after the the_func call, any jQuery methods are applied to the original selector

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