将一个表单的文件输入字段的值复制到另一个表单的输入字段 [英] copying the value of a form's file input field to another form's input field

问题描述

所以我有两个表单，都有一个文件类型输入字段，我试过了

So I have two forms, both have a file type input field and I tried

$('.inputfield1').change(function(){
   var file = $(this).val();
   $('.inputfield2').val(file);
});

但是它没有被正确复制并且firebug在错误控制台中抱怨安全错误"

but then it doesn't get copied properly and firebug complains about "Security Error" in the error console

我做错了什么，如何正确复制文件输入字段的值

what did I do wrong and how can I properly copy the value of a file input field

顺便说一下，目标表单的目标设置为 iframe(不是不同的域)

by the way, the destination form has a target that is set to an iframe (not a different domain)

推荐答案

您不能将一个文件输入的值移动到另一个文件.相反，克隆输入，将克隆放置在原始位置，并将原始移动到隐藏表单中.

You can't move the value of one file input to another. Instead, clone the input, place the clone where the original is, and move the original into the hidden form.

$(".inputfield1").change(function(){
  var $this = $(this), $clone = $this.clone();
  $this.after($clone).appendTo(hiddenform);
});

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