Recommend a jQuery plug-in template_jquery
I have been using jQuery for quite some time, and I often write plugins for it. I've tried different ways to write it, and now this template is my favorite:
;(function($) {
// multiple plugins can go here
(function(pluginName) {
var defaults = {
color: 'black',
testFor: function(div) {
return true;
}
};
$.fn[pluginName] = function(options) {
options = $.extend(true, {}, defaults, options);
Return this.each(function() {
var elem = this,
$elem = $(elem);
// heres the guts of the plugin
If (options.testFor(elem)) {
$elem.css({
borderWidth: 1,
borderStyle: 'solid',
borderColor: options.color
});
}
});
};
$.fn[pluginName].defaults = defaults;
})('borderize');
})(jQuery);
//The following is the usage
$('div').borderize();
$('div').borderize({color: 'red'});
1. You can still access the default options inside, even if it is overridden (simply accessed through the parent attribute)
2. You can change the name of the plug-in by modifying the pluginName. (This method is also very beneficial for code compression)
Point #1 is very powerful. For example, if we want to override this method, but still want to keep the original method, we can look at the following example:
TestFor: function(elem) {
var $elem = $(elem);
If (elem.is('.inactive')) {
return false;
} else {
// calling "parent" function
return $.fn.borderize.defaults.testFor.apply(this, arguments);
}
}
});
We can even do this with regular properties like this
var someVarThatMayBeSet = false;
/* code ... */
$('.borderize').borderize({
color: someVarThatMayBeSet ? 'red' : $.fn.borderize.defaults.color
});

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