JQuery plug-in development sample code_jquery

JQuery plug-in development:
Class level development, develop new global functions
Object level development, develop new methods for Jquery objects
1. Class level development- Define global method

Copy code The code is as follows:

jQuery.foo = function( ) {
alert('This is a test.');
};

Using namespace can avoid function conflicts within the namespace.

Copy code The code is as follows:

jQuery.apollo={
fun1:function( ){
console.log('fun1');
},
fun2:function(){
console.log('fun2');
}
}

2. Object level development - defining jQuery object methods

Copy code The code is as follows:

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

};
})( jQuery);
//The plug-in is called like this:
$('#myDiv').pluginName();

Accepts the options parameter to control the behavior of the plug-in

Copy code The code is as follows:

(function($){
$.fn.fun2=function (option){
var defaultOption={
param1:'param1',
param2:'param2'
}
$.extend(defaultOption,option);
console.log (defaultOption);
}
})(jQuery);
$(function(){
//Called like this
$("body").fun2({
param1:'new Param1'
});
});

Keep private functions private

Copy code The code is as follows:

(function($) {
// plugin definition
$.fn.hilight = function(options) {
debug(this);
// ...
};
// private function for debugging
// The "debug" method cannot be entered from the external closure, so for our implementation it is Private.
function debug($obj) {
if (window.console && window.console.log)
window.console.log('hilight selection count: ' $obj.size());
};
// ...
})(jQuery);