How to use PHP value in javascript

Question

0.00/5 (No votes)

See more:

The echoed php value from $bt1 (ID=inputdata3) doesn't work correctly in the javascript.

The hardcoded value from id=inputdata2 works fine.

What do I need to do to get the softcoded php value to work correctly?

..ultimately use the function to generate a barcode.

Thanks

What I have tried:

<div id="externalbox" style="width:4in">
    <div id="inputdata2">78910</div>
</div>

<div id="externalbox" style="width:4in">
    <div id="inputdata2">78910</div>
</div>

<div id="externalbox" style="width:4in">
    <div id="inputdata3"><?php echo $bt1;?>  </div>
</div>

<script type="text/javascript">
    // $(document).ready(function() {
        function get_object(id) {
            var object = null;
            if (document.layers) {
                object = document.layers[id];
            } else if (document.all) {
                object = document.all[id];
            } else if (document.getElementById) {
                object = document.getElementById(id);
            }
            return object;
        }
        get_object("inputdata").innerHTML = DrawCode39Barcode(get_object("inputdata").innerHTML, 1);
        get_object("inputdata2").innerHTML = DrawCode39Barcode(get_object("inputdata2").innerHTML, 1);
        get_object("inputdata3").innerHTML = DrawCode39Barcode(get_object("inputdata3").innerHTML, 1);
</script>

Posted 16-Dec-21 16:31pm

Member 15467659

Updated 30-Jul-22 21:12pm

Add a Solution

Comments

Richard MacCutchan 17-Dec-21 4:16am

I just tried that and it works correctly. I can only assume that $bt1 is not defined. Check the browser console to see if any errors are showing.

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Member 15627495 · Answer 1 · 2022-07-30T21:12:00

Solution 1

to integrate a var in html/js from PHP :

<?php global $bt1 = '........'; ?>
// the keyword 'global' make the var for all scopes in all php pattern.
// few html tags

<?php echo($bt1); ?>

//

Posted 30-Jul-22 21:12pm

Member 15627495