有没有办法在 jQuery 或 javascript 中克隆表单字段值？
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Is there a way to clone form field values in jQuery or javascript?
提问by Fred
jQuery has a clone()function that clones the actual form with no problem, but it doesn't preserve any values that have been entered into the form.
jQuery 有一个clone()函数可以毫无问题地克隆实际表单，但它不会保留任何已输入表单的值。
Is there a way to get around this?
有没有办法解决这个问题？
Sample code would be much appreciated.
示例代码将不胜感激。
回答by sled
ran into the same problem, simple solution:
遇到同样的问题，简单的解决方法：
// touch all input values
$('input:text').each(function() {
$(this).attr('value', $(this).val());
});
var clones = $('input:text').clone();
the trick is that this will change the actual 'value' attribute in the DOM tree, otherwise the data you enter 'on-the-fly' only exists in the DOM 'state'
诀窍在于，这将更改 DOM 树中的实际“值”属性，否则您“即时”输入的数据仅存在于 DOM“状态”中
回答by hookedonwinter
Stemming from the notes, here's a solution. With the following form:
根据笔记，这里有一个解决方案。使用以下形式：
<form id="old">
<textarea>Some Value</textarea>
<input type="text" value="Some Value" />
<input type="checkbox" value="bob" checked />
<br />
</form>
<input type="button" value="Clone" id="clone" />
This jQuery works, including the textareas:
这个 jQuery 工作，包括 textareas：
$( 'input#clone' ).click(
function()
{
$( 'form#old textarea' ).text( $( 'form#old textarea' ).val() )
$("form#old").clone().attr( 'id', 'new_form' ).appendTo("body")
}
)
?Demo: http://jsfiddle.net/Jux3e/
回答by Ben
Another easy fix for the textarea values not being cloned is to include the following JavaScript file in your HTML: https://github.com/spencertipping/jquery.fix.clone
未克隆 textarea 值的另一个简单修复是在 HTML 中包含以下 JavaScript 文件：https: //github.com/spencertipping/jquery.fix.clone
It just patches the clone method so you can include the file and then forget it's there. Apparently there is a problem with cloneing select values too and this same file fixes that problem as well.
它只是修补克隆方法，因此您可以包含文件，然后忘记它在那里。显然，克隆选择值也存在问题，这个文件也解决了这个问题。
This file was linked to from: http://bugs.jquery.com/ticket/3016. The bug is 4 years old.
该文件链接到：http: //bugs.jquery.com/ticket/3016。这个bug已经4岁了。
回答by Manavendher
Use this code to copy textarea values
使用此代码复制 textarea 值
clonedObject.find(textareaObject).val(originalObject.find(textareaObject).val());
回答by waza
You may use this jQuery Plugin.
您可以使用这个 jQuery 插件。
/**
* clone element, including the textarea part
*/
$.fn.clone2 = function(val1, val2) {
// ret for return value, cur for current jquery object
var ret, cur;
ret = $(this).clone(val1, val2);
cur = $(this);
// copy all value of textarea
ret.find('textarea').each(function() {
var value_baru;
// use name attribute as unique id
value_baru = sek.find('[name="$name"]'.replace('$name', $(this).attr('name')))
.val();
// set the new value to the textarea
$(this).val(value_baru);
});
// return val
return ret;
}
回答by dee32
Found this problem and wrote this wrapper:
发现这个问题并写了这个包装器：
$.fn.cloneField = function(withDataAndEvents) {
var clones = [];
this.each(function(){
var cln = $(this).clone(withDataAndEvents);
cln.val($(this).val());
clones.push(cln.get(0));
});
return jQuery( clones ); };
