FormData 构造函数在 Edge 中丢失 textarea 值 [英] FormData constructor loses textarea value in Edge

问题描述

我有一个文本区域:

<textarea cols="20" id="testtextbox" name="testtextbox" rows="2">test</textarea>

我通过构建一个 FormData 对象来发布它:

and I POST it by building a FormData object:

var newForm = $('<form></form>').append($("#testtextbox"))
var formdata = new FormData(newForm.get(0));

var xhr = new XMLHttpRequest();
xhr.open('POST', '/', true);
xhr.send(formdata);

JSFiddle在这里

我希望这会发布该文本区域的值，该文本区域适用于 Chrome 和 Firefox.但是，在 Edge 42.17134 上，发布的请求正文是:

I would expect this to post the value of that one textarea, which works on Chrome and Firefox. However, on Edge 42.17134 the POSTed request body is:

-----------------------------7e2203930476
Content-Disposition: form-data; name="testtextbox"
 
 
-----------------------------7e2203930476--

这在早期版本的 Edge 中也能正常工作.难道我做错了什么?据我所知，我不依赖任何已弃用的功能.

This also works fine in previous versions of Edge. Am I doing something wrong? As far as I can tell I'm not relying on any deprecated features.

推荐答案

根据你的描述和代码，建议你可以查看formdata 的官方 API 并按照以下两种方式修改您的代码.

According to your description and code, I suggest that you could check the official API about formdata and modify your code like the following two ways.

1.使用 formdata.append 发布值

1.use formdata.append to post the value

<textarea cols="20" id="testtextbox" name="testtextbox" rows="2">test</textarea>
<script type="text/javascript">
   var formdata = new FormData();
   formdata.append("testtextbox", testtextbox.value);
   var xhr = new XMLHttpRequest();
   xhr.open('POST', '/', true);
   xhr.send(formdata);
</script>

结果:第一种方式

2.在页面正文中添加表单

2.add a form to the page body

<form id="form1" name="form1">
    <textarea cols="20" id="testtextbox" name="testtextbox" rows="2">test</textarea>
</form>
<script type="text/javascript">
    $(function () {
        var newForm = $("#form1");
        var formdata = new FormData(newForm.get(0)); 

        var xhr = new XMLHttpRequest();
        xhr.open('POST', '/', true);
        xhr.send(formdata);
    })
</script>

结果:第二种方式

此致，

珍妮弗

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