如何通过JavaScript设置表单动作？ [英] How to set form action through JavaScript?

问题描述

我有一个HTML表单，其操作应该通过JavaScript动态设置。我该怎么做？这是我想要实现的：

I have an HTML form whose action should be set dynamically through JavaScript. How do I do it? Here is what I am trying to achieve:

<script type="text/javascript">
function get_action() { // inside script tags
 return form_action;
 }
</script>

<form action=get_action()>
...
</form>

推荐答案

onXXX 。只需在window onload中指定它即可。

You cannot invoke JavaScript functions in standard HTML attributes other than onXXX. Just assign it during window onload.

<script type="text/javascript">
    window.onload = function() {
        document.myform.action = get_action();
    }

    function get_action() {
        return form_action;
    }
</script>

<form name="myform">
    ...
</form>

你看到我给出了一个 name ，因此可以在 document 中轻松访问。

You see that I've given the form a name, so that it's easily accessible in document.

另外，您也可以在<$

Alternatively, you can also do it during submit event:

<script type="text/javascript">
    function get_action(form) {
        form.action = form_action;
    }
</script>

<form onsubmit="get_action(this);">
    ...
</form>

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