扩展现有的jQuery函数 [英] Extending an existing jQuery function
问题描述
(function($)
{
$ .fn.css = function()
{
//我会延长
//不影响/更改
// .css()的工作方式为
};
})(jQuery);
我只需要扩展 .css( )
函数。因为你可以 className extends existingClass
,所以我问是否可以扩展jQuery函数。
当然,请保存对现有函数的引用,然后调用它:
<$ ($($)
{
//保持对现有函数的引用
var oldcss = $ .fn.css;
// ...覆盖jQuery扩展点之前
$ .fn.css = function()
{
//原始行为 - 使用function.apply保存上下文
var ret = oldcss.apply(this,arguments);
//我会延长
//不影响/改变
//方式.css( )工作
//保存返回值(可能是jQuery对象...)
return ret;
};
})(jQuery);
I am trying to write a plugin that will extend an existing function in jQuery, e.g.
(function($)
{
$.fn.css = function()
{
// stuff I will be extending
// that doesn't affect/change
// the way .css() works
};
})(jQuery);
There are only a few bits I need to extend of the .css()
function. Mind me for asking, I was thinking about PHP classes since you can className extend existingClass
, so I'm asking if it's possible to extend jQuery functions.
Sure... Just save a reference to the existing function, and call it:
(function($)
{
// maintain a reference to the existing function
var oldcss = $.fn.css;
// ...before overwriting the jQuery extension point
$.fn.css = function()
{
// original behavior - use function.apply to preserve context
var ret = oldcss.apply(this, arguments);
// stuff I will be extending
// that doesn't affect/change
// the way .css() works
// preserve return value (probably the jQuery object...)
return ret;
};
})(jQuery);
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