How to export PHP variable to external Javascript file?

Question

Please provide a working example.. I am tired of finding solution on net.

Answer 1

The same question from stackoverflow
https://stackoverflow.com/questions/2928827/access-php-var-from-external-javascript-file

Answer 2

This is not working... I already tried all methods. In Javascript file, the variable is undefined.

Answer 3

Can you provide some code?

Answer 4

Take a simple example like...
In 001.php file:

$id = "1234";

Now wanna get this value into Javascript file...