I am making an web app that has typical javascript structure below. I must hide at least a function or some formulas from the public code because someone can save the page on his computer without paying for the web app membership. I am not sure how to do that. I read a way is to send an array/variable to a php file and solve it there and then return the values to the main page preferably to javascript but to html is also fine. Another way is with cookie. I am new to this and not sure how to do any of these.

"edit" just because some people missunderstood what I am asking I want to clarify that I am asking a way to communicate with php (or something else on a server) do some mathematical operations there that are hidden and return the values.

        function myOpt() {
            var x     = [];
            var y     = []; 
            var a     = [];
            var b     = [];
            var w     = [];
            var h     = [];
             // Do stuff here that should be hidden  
             // Do stuff here that should be hidden  
                drawCurveTypes()
        }

        function drawCurveTypes() {
              var x     = [];
              var y     = []; 
              var a     = [];
              var b     = [];
              var w     = [];
              var h     = [];
                 // Do stuff here that should be hidden  
                 // Do stuff here that should be hidden  
         }

          <script src="https://www.gstatic.com/charts/loader.js"></script>

CodePudding user response：

Use JSON.stringify() on your array and use AJAX to send it to your php script.

On php side, you can json_decode() that same array and work with it.

You could protect that PHP script with sessions, and return an error if one is not allowed to access it.

CodePudding user response：

You can't stop someone to download your client side script code.

Check this How do I hide javascript code in a webpage?

And i can check every client side code with the browser developer tools.

Edit: You mean this:

How do I pass JavaScript to PHP?

Sending a JavaScript array to PHP via POST

Pass Javascript Array -> PHP

This are your HTTP request methods(check for browser compatibility):

HTTP request methods

Every operation on the server-side is hidden(on a normal way without bugs or something else) and the result you send to the client is public.