如何在脚本标签中获取Request.Form？

Question

How do I get the Request.Form within a script tag?

<script language="javascript" type="text/javascript">
  var sLandingPage = "";
  var sInitContent = "" + Request.Form("textarea") + "";
  var sInitDialogMsg = "";
</script>

Answer 1

You can't do request.form in javascript. But you can get things out of the query string if you post the form via get.

Answer 2

To read an url parameter from javascript you could use the following method:

<script type="text/javascript">
var sLandingPage = '';
var sInitContent = getUrlParam('textarea');
var sInitDialogMsg = '';

function getUrlParam(name)
{
    name = name.replace(/[\[]/, '\\\[').replace(/[\]]/, '\\\]');
    var regexS = "[\\?&]"+name+"=([^&#]*)";
    var regex = new RegExp( regexS );
    var results = regex.exec(window.location.href);
    if(results == null)
        return '';
    else
        return results[1];
}
</script>

Answer 3

Javascript is running at client side, so if your want to get the text area's value before post your page to serve, use this :

var sInitContent = document.getElementById("textarea");

but if you want to get the posted value of your textarea, (I'm assuming you're using asp or asp.net) try this :

var sInitContent = '<%= Request.Form("textarea")%>';