dynamically declare values // javascript

Question

My problem is:

I need to pass a number to my code. I would like to do it with alert. It does not work. I am completely frustrated since I do only have this problem (with syntax of course) in javascript.

How to make it work? Thanks

Answer 1

alert() function only output message to user...
To get an input from user you should use prompt():

var input = prompt('enter some string value:");

Answer 2

It should...

Provide your code to get more help ^^

Answer 3

The problem is that you declare 'num' variable inside the number() function, so it does only exist in the local scope ^^

Answer 4

It does not work. I mean the value is not passed to the variable...

Answer 5

function number(){

var num=prompt("Give any number: ");
}

var x=0;
var y=0;

number();
x=num;

y = x+2;

Answer 6

Thanks! I see it. It now works! :)