php ajax - two drop down list with a submit button

orangge · October 13, 2009

i have created a form with 2 drop-down list and a submit button. I would like to know how to pass the selected values from the two drop down list to external javascript file and only will pass it after i clicked the submit button? Below is the example of my code:

<html>

<head>

<title>Report</title>

</head>

<body>

Magazines:

<option value="">---Select---</option>

<option value="1">Magazine A</option>

<option value="2">Magazine B</option>

</select>

Month:

<option value="">---Select---</option>

<option value="Jan">January</option>

<option value="Feb">February</option>

<option value="Mar">March</option>

<option value="Apr">April</option>

<option value="Aug">August</option>

<option value="Sept">September</option>

<option value="Oct">October</option>

<option value="Nov">November</option>

<option value="Dec">December</option>

</select>

</form>

</body>

</html>

//javascript code

var xmlhttp;

function showTid(str)

{

xmlhttp=GetXmlHttpObject();

if (xmlhttp==null)

{

alert ("Browser does not support HTTP Request");

return;

}

function showMonth(str2)

{

xmlhttp=GetXmlHttpObject();

if (xmlhttp==null)

{

alert ("Browser does not support HTTP Request");

return;

}

var url="getID.php";

url=url+"?q="+str+"?m="+str2;

url=url+"&sid="+Math.random();

xmlhttp.onreadystatechange=stateChanged;

xmlhttp.open("GET",url,true);

xmlhttp.send(null);

}

Hope someone here can help me out. Thanks in advance.

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php ajax - two drop down list with a submit button

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