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jQuery中$this和$(this)的区别是什么?
What is the difference between $this and $(this) in jQuery? -PHP Chinese website Q&A-What is the difference between $this and $(this) in jQuery? -PHP Chinese website Q&A
Let’s take a look and learn.
// this其实是一个Html 元素。 // $this 只是个变量名,加$是为说明其是个jquery对象。 // 而$(this)是个转换,将this表示的dom对象转为jquery对象,这样就可以使用jquery提供的方法操作。 (function($){ $.fn.hilight = function(options){ debug(this); var defaults = { foreground: 'red', background: 'yellow' }; var opts = $.extend({}, $.fn.hilight.defaults, options); return this.each(function() { // this其实是一个Html 元素。 // $this 只是个变量名,加$是为说明其是个jquery对象。 // 而$(this)是个转换,将this表示的dom对象转为jquery对象,这样就可以使用jquery提供的方法操作。 $this = $(this); // build element specific options var o = $.meta ? $.extend({}, opts, $this.data()) : opts; // update element styles $this.css({ backgroundColor: o.background, color: o.foreground }); var markup = $this.html(); // call our format function markup = $.fn.hilight.format(markup); $this.html(markup); }); }; // define our format function $.fn.hilight.format = function(txt) { return '<strong>' + txt + '</strong>'; }; // 插件的defaults $.fn.hilight.defaults = { foreground: 'red', background: 'yellow' }; function debug($obj) { if (window.console && window.console.log){ window.console.log('hilight selection count: ' + $obj.size()); } }; })(jQuery)
What is the difference between $this and $(this) in jQuery? -PHP Chinese website Q&A-What is the difference between $this and $(this) in jQuery? -PHP Chinese website Q&A
Let’s take a look and learn.