jquery的clone方法bug的修复
最近发现jquery的clone的bug,textarea和select的jquery的clone方法有问题,textarea和select的值clone的时候会丢掉,在网上发现一个插件,下载地址如下:https://github.com/spencertipping/jquery.fix.clone/blob/master/jquery.fix.clone.js,上不了的可以看下代码,比较简单。就是在clone的时候将val再重新赋值一下,如果知道这个了,也可以不用这个插件,自己写。
// Textarea and select clone() bug workaround | Spencer Tipping // Licensed under the terms of the MIT source code license // Motivation. // jQuery's clone() method works in most cases, but it fails to copy the value of textareas and select elements. This patch replaces jQuery's clone() method with a wrapper that fills in the // values after the fact. // An interesting error case submitted by Piotr Przybył: If two <select> options had the same value, the clone() method would select the wrong one in the cloned box. The fix, suggested by Piotr // and implemented here, is to use the selectedIndex property on the <select> box itself rather than relying on jQuery's value-based val(). (function (original) { jQuery.fn.clone = function () { var result = original.apply(this, arguments), my_textareas = this.find('textarea').add(this.filter('textarea')), result_textareas = result.find('textarea').add(result.filter('textarea')), my_selects = this.find('select').add(this.filter('select')), result_selects = result.find('select').add(result.filter('select')); for (var i = 0, l = my_textareas.length; i < l; ++i) $(result_textareas[i]).val($(my_textareas[i]).val()); for (var i = 0, l = my_selects.length; i < l; ++i) result_selects[i].selectedIndex = my_selects[i].selectedIndex; return result; }; }) (jQuery.fn.clone);