代码如下:// 添加function col_add() { var selObj = $(“#mySelect”); var value=”value”; var text=”text”; selObj.append(“<option xss=removed>”+text+”</option>”);}// 删除function col_delete() { var selOpt = $(“#mySelect option:selected”); selOpt.remove();}// 清空function col_clear() { var selOpt = $(“#mySele
