How to use document.getElementById() with php?

@rootNov 07.2013 — #You can not use JavaScript server-side, JavaScript is a client-side language.

You can use PHP to generate HTML and JavaScript code but not the other way around, not in the way you appear to be using it.

To retrieve data from a server using JavaScript you need to use what is referred to as AJAX which is Asynchronous Javascript And XML

To be very basic and rudimentary an AJAX routine consists of...

[CODE]// we make an AJAX (aka XML) object
 ajax = new XMLHttpRequest();
 
 // we now make a request object
 ajax.open("GET","yourScript.php",true);
 
 // we now make reference to a method to handle the results (if any)
 ajax.onreadystatechange = function(){
 // test if the result has completed the request states
 if( ajax.readyState == 4){
 // we completed but was the result OK?
 if(ajax.status == 200){
 // we were OK because we had HTTP 200 signal
 alert(ajax.responseText); // show the result
 }
 }
 }
 // now make the request
 ajax.send();
 [/CODE]

Your receiving script yourScript.php will be any number of methods of returning information requested, it could be as simple as...
[code=php] echo date("r");[/code]
returning an RFC based time stamp

You can test this on your computer if you have a web server installed, or a service that will allow development testing on your PC, one word of advice is that you need and can't stress enough, to install a firewall, forget windows firewall as its about as useful as a chocolate tea pot.

@httpsterNov 08.2013 — #You can use php inside of javascript on the client side.

So, as long as the variable $test is currently present somewhere on the page you could do...

[CODE]<script type="text/javascript">
 console.log(<?php $test ?>);
 </script>[/CODE]

This is done in wordpress files all the time.

How to use document.getElementById() with php?

3 Comments(s) _↴

Also in #JavaScript _↴

Success!

Social

Version

How to use document.getElementById() with php?

3 Comments(s) ↴

Also in #JavaScript ↴

Success!

The web is an endless sea of information. Don't miss the boat... Subscribe!

Social

Version

3 Comments(s) _↴

Also in #JavaScript _↴