从html / php文件中调用JS函数而无需按钮

Question

I'm trying to call my JS function which is in a file called Scripts.js. I have a php function, but I'm unsure as to whether I need to come out the php function or not as I can't get it to work either way and nothing I've googled is giving a definitive answer as to which it should be so any help would be appreciated!

<?php if(isset($_REQUEST['renameFile']))    
{
    //uses checkboxes from table
    if(isset($_POST['checkbox']))
    {
        $checkedboxes = $_POST['checkbox'];
        $count = count($checkedboxes);
        //echo ("$count");

        /*if($count == 0)
        {
            throw error that something needs to be selected. If implement checkbox hidden then no need to implement 
        }*/

         if($count == 1)
        {?>
            <script type="text/javascript">
                showUpload();
            </script>
            <?php
        }
?>

So I'm calling the function showUpload() in my Scripts.js file which I have defined in my main screen using

<script src ="Scripts.js"> </script>

Which I know works as I've used it elsewhere.

function showUpload()
{
    document.getElementById('fileUpload').style.display = "block";
}

And then this goes on to call a pop up form which I can get to work on a button click so it's just calling it without a button which seems to be an issue. Thanks!

Answer 1

check following things.

1. include your js file at the top of the file

2. write the script tag out side the php mode.

3. make sure the if conditions are true/false as you expect

then the code should work fine