JSP obtains the textarea value and uses Ajax

JSP was first introduced in the past two days, and many things were hard to understand. The value of textarea cannot be obtained from JSP. For example, the Code of the JSP page is as follows:

remarks

</span> </P>

</Textarea>
</Tr>

Then use

String beizhu = request. getparameter ("beizhu ");

The old output is null, and the reason is found on the JS page. It was written as follows:

VaR beizhu = $ ('tbeizhu '). Val ();

But the correct statement should be:

VaR beizhu = $ ('textarea '). Val ();

Then you can get it!