How to use variables from a php file in a js file?

Question

I have the following file structure:

Now I want to use the variables from the dropdown menu's (that are in the get_attributes.php, get_fields.php and in the get_tables.php) in my main.js and in getData.php . Now the question is how can use a variable from another .php file in a .js file?

here is the answer of your question Access PHP var from external javascript file — sorrow poetry
– sorrow poetry, Commented May 17, 2016 at 7:43
Possible duplicate of How to pass variables and data from PHP to JavaScript? — Satej S
– Satej S, Commented May 17, 2016 at 7:44

Samuel Dauzon · Accepted Answer · 2016-05-17 07:46:00Z

2

You can't directly use PHP variables from JS scripts.

Dynamic access

If you want get variables dynamically you can use AJAX (see jQuery AJAX doc ).

Static access

If you want to access PHP variables when your JS app start you can put PHP variables in the DOM by using this syntax :

<input type="hidden" id="php_name" value="<?=$name?>" />

And use jQuery to get it :

$('#php_name').val();

I hope it will help.

answered May 17, 2016 at 7:46

Samuel Dauzon

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2 Comments

jcubic Over a year ago

You don't need hidden input you can use <script>var name = <?=json_encode($name)?>;</script>

Samuel Dauzon Over a year ago

I like to have possibility to put all JS in a JS file. So I prefer add data to DOM.

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