Simple jsp exercises-simple drop-down forms and jsp drop-down forms

Simple jsp exercises-simple drop-down forms and jsp drop-down forms

<% @ Page contentType = "text/html; charset = gb2312" %> 



How to submit a form after the drop-down list value in jsp is changed without clicking the query button
Onchange = "form. submit ();" replace it with a js function. input the form id and submit it in the function.

For example, function selectSubmit (){
GetElementById ("form1"). submit;
}

<Select size = "1" name = "D1" onchange = "selectSubmit ();">
<Option> 1 </option>
<Option> 2 </option>
<Option> 3 </option>
</Select>

Simplest jsp program-form submission
Web. xml does not need to be configured as long as jsp is used.