calling JS function when checkbox set checked by php

Question

I am onto this problem. During check of the following code in web page, the checkBoxClicked function is called.

<input type="checkbox" name="check" onchange="checkBoxClicked(this)"/>Check

But I sometime need to check this checkbox using php (during editing process). So while I set this check box checked using this code

<input type="checkbox" name="check" onchange="checkBoxClicked(this)"
    <?php if($check =='1'){
    echo "checked=\"true\"";
    }?>
/>Check

I want the function to be called.

What can I do to get the function called when the checkbox is checked using php?

Fender · Accepted Answer · 2011-10-17 06:17:54Z

2

<input type="checkbox" name="check" onchange="checkBoxClicked(this)"
<?php if($check =='1'){
echo "checked=\"checked\"";
}?>
/>Check

<?php if($check == '1'){
    echo '<script type="text/javascript">checkBoxClicked(document.getElementsByName("check")[0]);</script>';
}
?>

This would be the quick n dirty solution

answered Oct 17, 2011 at 6:17

Fender

3,0551 gold badge19 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

5 Comments

bunkdeath Over a year ago

Isn't there any method that I can embed inside the input field?

Vlad Balmos Over a year ago

'checked="true"' should be 'checked="checked"' for compatibility reasons

Fender Over a year ago

you are right. I've just copied the code from above and assumed that it is correct :)

bunkdeath Over a year ago

Tailing the question. pastebin.com/BaRVm4bA This is the part I am trying to do. When checked manually, I get the div id="check" displayed. But when done through the code, I get error message saying document.getElementById("check") is null where am I going wrong?

Fender Over a year ago

the code is executed before the <div id="check"></div> part is loaded. So javascript can't access document.getElementById('check') because this part is not yet present. In this case you have to put the echo from the php at the bottom of your script or have it executed after the page is loaded

Collectives™ on Stack Overflow

calling JS function when checkbox set checked by php

1 Answer 1

5 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

5 Comments

Your Answer

Sign up or log in

Post as a guest

Related