jQuery.clean使用方法及思路分析

         // Reset defaultChecked for any radios and checkboxes
         // about to be appended to the DOM in IE 6/7 (#8060)
         // 在ie6,7中,拥有checked属性的单选按钮,复选框在插入到其他标签后,选中状态会失效(下面代码修复该bug)
         if ( !jQuery.support.appendChecked ) {
             for ( i = 0; (elem = ret[i]) != null; i++ ) {
                 if ( jQuery.nodeName( elem, “input” ) ) {
                     fixDefaultChecked( elem );
                 } else if ( typeof elem.getElementsByTagName !== “undefined” ) {
                     jQuery.grep( elem.getElementsByTagName(“input”), fixDefaultChecked );
                 }
             }
         }
         // Append elements to a provided document fragment
         // 将ret数组中的各DOM节点插入到提供的文档碎片中
         // 提取dom节点中的script节点，并添加到ret数组中，位置为其原父元素索引位置后
         if ( fragment ) {
             // Special handling of each script element
             handleScript = function( elem ) {
                 // Check if we consider it executable
                 // 如果elem元素不存在type属性或者type值为javascript或者为ecmascript
                 if ( !elem.type || rscriptType.test( elem.type ) ) {
                     // Detach the script and store it in the scripts array (if provided) or the fragment
                     // Return truthy to indicate that it has been handled