是否可以使用其中一个字段动态更改html表单的操作标记值的值？ [英] Is it possible to dynamically change the value of html form's action tag value with one of its fields?

问题描述

我搜索了很多（SO& GOOGLE）但是找不到更接近解决我问题的方法。

I searched a lot(S.O & GOOGLE) but was not able to find any closer looking approach to solve my problem.

我有一个简单的html5表单9-10输入并使用mailto：[e-mail]标签组成一封电子邮件，其中包含所有输入数据。
到此为止我很好，但现在我需要用一个输入字段更改[e-mail]值。

I have a simple html5 form having 9-10 inputs and uses "mailto:[e-mail]" tag to compose an email having all the entered data through inputs in there. Upto here i'm fine but now i need to change the "[e-mail]" value with one of its input field.

例如

 <form method="post" action="now it should have what is value of 1." enctype="text/plain">

  1. <input type="Email" name="ToEmail" id="ToEmail" value="" required placeholder="Target Email Address.."/>
  2. 
  3.
   .
   .
  <button type="submit">Submit</button></div>
 </form>

我自己试了一下：
创建了一个javascript函数

函数actionValue（）

What i tried myself: created a javascript function
function actionValue()

        {
        var email = document.getElementById('ToEmail').value;
        var action = "mailto:"+email+"?subject=Test"
        return action;
        }

并像这样调用此函数

  <form method="post" action="javascript:actionValue();" enctype="text/plain">

我怀疑我的逻辑或我使用javascript的方式有问题。
任何帮助都将受到高度赞赏。

I suspect that there is something wrong with my logic or the way i'm using the javascript. Any help will highly be appreciated.

谢谢，
ps：我对js不太好..

Thanks, p.s : I'm not that good with js..

推荐答案

你应该可以做一些事情：

You should be able to do something along the lines of:

<form method="post" action="javascript:;" onSubmit="this.action='mailto:'+document.getElementById('ToEmail').value;" enctype...>

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