Javascript - Checkbox onclick-+ operations

Question

i'm working on a project and try to do something with checkboxes.

when a user click to a checked checkbox total value is - reverse is +

this is my code. i use recal function to do that check box is checked and send it to js as true

 echo "<td><input type=checkbox name='check1' value='".$info['eventCategory']."'  onclick='recal(" . $info['totalEvents'] . ",true)' checked></td><td>" . $info['id'] . "      " . $info['name'] . "</td>";




function recal(val,sum)
{ 
    if(sum)
    {
    var total = document.getElementById("total").innerHTML;
    total+=val;
    document.getElementById("total").innerHTML=total;
   }       
}
</script>

when sum is come as true it doesnt not sum the value :S

Jimmery · Accepted Answer · 2012-02-20 15:48:20Z

1

looks to me like a type casting problem - change this line:

var total = document.getElementById("total").innerHTML;

to this:

var total = parseInt(document.getElementById("total").innerHTML, 10);

answered Feb 20, 2012 at 15:48

Jimmery

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4 Comments

Mert METİN Over a year ago

is this wrong = if(check1.checked){onclick='recal(" . $info['totalEvents'] . ",true)'}

Jimmery Over a year ago

id use jquery for that: something like: $('#check1').on('change',function(){recal(" . $info['totalEvents'] . ",true);}); - you might need to add this attribute to teh checkbox itself: <input type=checkbox name='check1' id='check1' value....

Mert METİN Over a year ago

onclick=if(this.checked){'recal(" . $info['totalEvents'] . ",true)'} what is wrong with that

Jimmery Over a year ago

if it works, then nothing is wrong with it. id just personally use jquery because im more familiar with it and you can do more with less lines of code.

Bartosz Grzybowski · Accepted Answer · 2012-02-20 15:51:02Z

0

Also try looking at this example it should give You more overview what could've go wrong.

answered Feb 20, 2012 at 15:51

Bartosz Grzybowski

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