How to pass php variable's value to jquery

Question

I have a php variable:

$name_of_current_page 

which I have available in my view, and I want to make the value available to jquery. Is the best way to do it like the following?

$(document).ready(function () {             var current page = "<?php echo $name_of_current_page; ?>" ;  }); 

Answer 1

It really depends if you are using some sort of a template engine.

1. If you're using plain PHP, the only option for you is to echo the variable:

   var current page = "<?php echo $your_var; ?>"; 

2. Twig engine:

   var current page = "{{ your_var }}"; 

3. Smarty and RainTPL engines:

   var current page = "{$your_var}"; 

As you can see, there are other ways. All of them work fine. It really depends on how you'd like to write and organize your code. I personally use Twig and find it really easy,fast and straightforward.

Also, as others have pointed out, you can do AJAX calls to the server and fetch the variables like that. I find that method time-consuming, inefficient and insecure. If you choose this method, you will be posting requests to a script. Everybody will be able to do post/get requests to that script which opens your doors to some bots and DoS/DDoS attacks.

Answer 2

var current page = "" ;

I don't think you can have spaces in a variable. (i could be wrong).

Anyway to simplify your code, I've just done re-done it slightly.

$name_of_current_page = "HomePage"; 

And for the Javascript;

var currentPage = "<?= $name_of_current_page; ?>"; 

That should be it.