Developing a standard jQuery function for adding event listeners

Attempting to replicate the functionality of Google Maps' addListener using jQuery listeners for clicks, keypresses, etc.

In Moogle Maps, you can use

.event.addListener(map, 'click', function()...
or switch 'click' with 'drag', 'mouseover', etc. Similarly, in jQuery, there are equivalents like 'click', 'keypress', etc.

Struggling with the idea of passing the trigger type as a variable. I have managed to create separate wrapper listeners easily, such as

function addClickListener(id, fn) {
    $(id).click(function() { fn(event); });
}      

// and

function addKeyPressListener(id, fn) {
    $(id).keypress(function() { fn(event); });
}

Having trouble implementing it with the below code snippet. Unsure how Google is able to pass a String like 'click' and execute a function. Possibly using eval? shudder

function addListener(id, type, fn) {
    typeFn = $.type;
    $(id).typeFn(function() { fn(event); });
}

Check out this example: http://jsfiddle.net/YCVVL/

Answer №1

You have the option to utilize the 'square bracket notation' in this scenario:

function addListener(id, type, fn) {
    $(id)[type](function() { fn(event); }); //< here
}

Alternatively, you can choose from one of the following methods:

$(id).on(type, function() { fn(event); });
$(id).bind(type, function() { fn(event); });

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