php - jQuery .keyup() function -

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i'm not receiving output code. error.

terminal.html

<html> <head> <link href="/css/webterminal.css" rel="stylesheet" type="text/css" /> <script type="text/javascript" src="jquery-1.5.2.js"/> <script type="text/javascript"> function shell_execute(str) {        $.ajax({     url: 'exec.php',     datatype: 'text',     data: {       q: str     },     success: function (response) {       $('#txtout').append(response);    }); } </script> </head <body">     <div class="container">      <h2>unix web based terminal 1.0</h2>         <br />     <p><b>output</b></p> <form> <span id="user"></span>< <input type="text" id="txtcmd" onkeyup="shell_execute(this.value)" class="textbox" size="20" /> </form> <div class="output"> <p><span id="txtout"></span></p>      </div> </div> </body> </html>

exec.php

<?php  $q=$_get["q"];  $output=shell_exec($q); echo "<pre>$output</pre>"; ?>

you need value text input element , put str before pass script.

like:

 var str = $("#txtcmd").val();

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