How to return value from onclick event in javascript

Question

1.00/5 (2 votes)

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<input type='button' id="btnGroups1"   önclick="return fnTabChanges('0')"/>
<input type='button' id="btnGroups2"   önclick="return fnTabChanges('1')"/>
<input type='button' id="btnGroups3"   önclick="return fnTabChanges('2')"/>
<input type='button' id="btnGroups4"   önclick="return fnTabChanges('3')"/>

how to write condition in javascript if third button is click. 
if(fnTabChanges()==2)
{
//code
}

is it true...
please help..???

Posted 24-Dec-13 2:50am

Amol Jadhao

Updated 24-Nov-19 16:07pm

JoCodes

v3

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Comments

Karthik_Mahalingam 24-Dec-13 9:10am

what you want to return ?

4 solutions

Solution 2

Try the following and adapt it if it suits your need:

<html>
<body>
<input type='button' id="button1" value='first button' onclick="clickMe(this)"/>
<input type='button' id="button2" value='second button' onclick="clickMe(this)"/>
<input type='button' id="button3" value='third button' onclick="clickMe(this)"/>
<input type='button' id="button4" value='fourth button' onclick="clickMe(this)"/>
 
<script>
function clickMe(e){
 
    alert("You have clicked button id = "+e.id+" and button value = "+document.getElementById(e.id).value);
 
}
</script>
 
</body>
</html>

Posted 24-Dec-13 3:40am

Peter Leow

Updated 24-Dec-13 4:07am

v3

Solution 3

You can return the value as follows

C#

function fnTabChanges(index) {
           //Some condition and code here as per logic
return someValue;
       }

Now to retrieve the value

önclick="var result = fnTabChanges('0');alert(result);"

// variable result has the return value , alert(result); is added to testing purpose

Hope this helps...

Posted 24-Dec-13 3:41am

JoCodes

Solution 6

<input type='button'  value = '1' id="btnGroups1"   önclick="return fnTabChanges(this.value)"/>

try it, I hope it can help you.

Posted 24-Nov-19 16:07pm

Miels1122

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Karthik_Mahalingam · Accepted Answer · 2013-12-24T03:07:00

Solution 1

hi try this code..

XML

<script type="text/javascript">

       function fnTabChanges(index) {
           if (index == '2')
           { alert(' third button clicked'); }
       }

   </script>

Posted 24-Dec-13 3:07am

Karthik_Mahalingam

Comments

Peter Leow 27-Dec-13 1:52am

Do not be discouraged. You have answered correctly to the question, +5!.

Karthik_Mahalingam 27-Dec-13 2:10am

thanks peter

EhabAhmed 31-Aug-19 23:10pm

Thanks +5