How to make post works in select element in HTML

开发者_Python百科<form>
    <select name="filter">       
      <option value="1">A</option>
      <option value="2">B</option>                            
    </select>
</form>

I want to make this drag down menu post when user selected an item. How to do that?

Alright, try to minimize the JS.

It's something similar to postback in ASP.NET.

This is not possible without at least a little bit of JavaScript.

You could do something like this:

<form name="myform">
  <select name="filter" onchange="document.myform.submit();">       
    <option value="1">A</option>
    <option value="2">B</option>                            
  </select>
</form>

Postback in ASP.NET uses JavaScript, it just hides it from you. If you do not want to use javascript, I do not believe you can accomplish what you are asking.