Question

I am trying to call a function by "onclick" event of the button.
When I do that it shows error message.
Can anybody help me out on this so that when I click on the button it should call the function and execute it.

My PHP code is:

<?php
    function hello() {
        echo "Hello";
    }
    echo "<input type='button' name='Release' onclick= hello(); value='Click to Release'>";
?>

What is wrong with this code?

Answer 1

First quote your JavaScript:

onclick="hello();"

Also you can’t call a PHP function from JavaScript;
you need:

<script type="text/javascript">
function hello()
{
alert ("hello");
}
</script>