Javascript calling from dropdown box

Discussion in 'JavaScript' started by bananalive, Aug 4, 2008.

0
  1. #1
    I have php displaying a dropdown box with list of rows in mysql database. On dropdown select of an option I want a javascript variable to be define with the value in the mysql row selected. Is this possible in one query?

    Thanks
     
    bananalive, Aug 4, 2008 IP
  2. mallorcahp

    mallorcahp Peon

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    #2
    something like this ... 

    
<html>

<head>
<script type="text/javascript">
function assignVar()
{
  var myObj = document.getElementById("mySelect");
  myVar = myObj.options[myObj.selectedIndex].text;
  // do whatever  ...
  alert(myVar);
}

</script>

</head>

<body>

<form method="POST" action="">
  <select id="mySelect" size="1" name="mySelect" onchange="assignVar()">
  <option>choose ...</option>
  <option>this</option>
  <option>that</option>
  <option>then</option>
  <option>there</option>
  </select>
</form>

</body>

</html>
    Code (markup):
     
    mallorcahp, Aug 5, 2008 IP
  3. yleiko

    yleiko Peon

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    #3
    you can use "this.value" when you are calling the function as selected value

    
<script language="Javascript">
function assignVar(selected)
{
doSomething()
}
</script>
    HTML:
    
  <select id="mySelect" size="1" name="mySelect" onchange="assignVar(this.value)">
  <option>choose ...</option>
  <option>this</option>
  <option>that</option>
  <option>then</option>
  <option>there</option>
  </select>
    HTML:
     
    yleiko, Aug 5, 2008 IP