有没有办法克隆jQuery或javascript中的表单字段值？

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（）函数可以克隆实际的表单而没有任何问题，但是它不保留已经输入到表单中的任何值。

Is there a way to get around this?

有办法解决这个问题吗？

Sample code would be much appreciated.

示例代码将非常感谢。

7 个解决方案

#1

ran into the same problem, simple solution:

碰到同样的问题，简单的解决方案：

// 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'

诀窍是这将改变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

#2

Stemming from the notes, here's a solution. With the following form:

根据笔记，这是一个解决方案。使用以下表格：

<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有效，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/

演示：http：//jsfiddle.net/Jux3e/

#3

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

另一个未被克隆的textarea值的简单修复是在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，因此您可以包含该文件，然后忘记它。显然，克隆选择值也存在问题，同样的文件也修复了这个问题。

This file was linked to from: http://bugs.jquery.com/ticket/3016. The bug is 4 years old.

此文件链接到：http：//bugs.jquery.com/ticket/3016。这个bug已经4年了。

#4

You may use this jQuery Plugin.

你可以使用这个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;
}

#5

if you need to duplicate the field itself, check this tinny function relCopy

如果您需要复制字段本身，请检查此细节函数relCopy

#6

Found this problem and wrote this wrapper:

发现这个问题并编写了这个包装器：

$.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 ); };

#7

Use this code to copy textarea values

使用此代码复制textarea值

clonedObject.find(textareaObject).val(originalObject.find(textareaObject).val());

#1