multiple button with one onsubmit - php

Question

I am having two buttons in a form ques and ans. When i click the ques button the same form with some text-fields will get open and in the form I've two buttons add and clear. By clicking add the entered field will be entered to the database. Like wise the same thing for clicking the answer button. I'm having one onsubmit=return valid() for both the buttons. I've to write separate script for both buttons, checking the conditions. But I'd written for only answer button. I dont know how to write for both buttons in one function valid(). Please tell me how to write for both buttons inside a function.
function valid()
{
var quest=document.getElementById('ques1').value;
var cno=document.getElementById('cno').value;
var pno=document.getElementById('pno').value;
quest1=trim(quest1);
pno=trim(pno);
cno=trim(cno);
if(quest=="")
{
alert("Please enter Question");
document.getElementById('ques1').focus();
return false;
}
else if( pno=="")
{
alert("Please enter valid Page No");
document.getElementById('pno').focus();
return false;
}
else if (cno=="")
{
alert("Please Select Chapter No");
document.getElementById('cno').focus();
return false;
}
}

Answer 1

You can do something like this
function validate(button_value) {
if(button_value=='test1') {
if(document.getElementById('rest1').value=="") {
alert('Blank for input 2');
return false;
}
} else if(button_value=='test') {
if(document.getElementById('rest').value=="") {
alert("Blank for input 1");
return false;
}
}
}
The HMTL I tested in:
<form method="POST" action="" onsubmit="return validate(this.submited);">
<input type="text" name="rest" id="rest" value=""/>
<input type="text" name="rest1" id="rest1" value=""/>
<input onclick="this.form.submited=this.value;" type="submit" id="test" value="test"/>
<input onclick="this.form.submited=this.value;" type="submit" id="test1" value="test1"/>
</form>
Hope this helps

Answer 2

<form method="POST" action="<?php echo $_SERVER['PHP_SELF']; ?>" onsubmit="return validate(this.submited);">
Question : <input type="text" name="ques">
Answer : <input type="text" name="ans">
<input type="submit" name="subques" value="Ask Question"/> <input type="submit" name="subans" value="Reply Answer"/>
</form>
<hr>
<?php
if(isset($_POST['subques']))
{
if(isset($_POST['ques']))
{
if($_POST['ques'] != '' && $_POST['ques'] != NULL)
{
echo "Your question is: " . $_POST['ques'];
}
}
}
if(isset($_POST['subans']))
{
if(isset($_POST['ans']))
{
if($_POST['ans'] != '' && $_POST['ans'] != NULL)
{
echo "Your answer is: " . $_POST['ans'];
}
}
}
?>