Question

I have a simple javascript:

function myfunction(form)

and a form with submit button:

<input type="submit" class="btn" onclick="return myfunction(this)" onsubmit="return myfunction(this)" value="Send!">

So when the user sends the form, the function is called.
In this function, for example I want to create a random number, and POST that as well with the information I have in the form.

So in the php file I read the data I want to say

$randomNumberGeneratedInTheScript = $_POST['randomNumber'];

Is this possible?
Thanks..

( I do not want to generate the random number in the php file. It has to be done in JavaScript. )

Answer 1

Very simple. Use a hidden form field:

<input type="hidden" name="randomNumber" value="">

Then you can use the math function to produce a random number

 var randomNumber = Math.floor(Math.random()*1000);

Note: that will produce a number bettween 1 and 1000, change the 1000 to any value you wish

Then onload or in a separate function you can call this and set the value of the hidden field

    document.getElementById('randomID').value = randomNumber;

There are other methods of doing it, but for the situation you described this sounds like the most cross compatible and easiest method to use.