Question

I’d like to call a variable, lets say var cow; which is placed in the function function farm() in the function function milk().

<script type="text/javascript">
var cow
function farm() {

cow = Math.Random;

}

function milk(){

// call/return value of cow

}
</script>

Check out this link: GLOBAL VARIABLES IN JAVASCRIPT by Snook
.
Now if you see the last code carefully, and test it…it actually doesn’t work, but I want something similar to work. You can check the code below…

var myValue;
function setValue()
{
    myValue = "test";
}

function getValue()
{
    alert(window.myValue); // yup, it's "test" (original) ---> (after testing) No its "undefined"
}

Answer 1

Similar to your example you can declare cow in the global scope:

var cow;

function farm() {

  cow = Math.random();

}

function milk(){

  // call/return value of cow

}

here is a working fiddle http://jsfiddle.net/IrvinDominin/FTt5D/; pay attention random is a method, you must use parenthesis () and write it in lowercase.