在JavaScript函数中定义全局随机变量

Question

I know that you might think that this is a repetitive question, but no. How do you have a global variable inside a function and keep the random number? Like var randomNum = round(random(1, 10)) and say that it comes out as a 2, can I keep the 2 in any way?

Answer 1

If you are not using 'use strict' inside function or in javascript file. So you can define :

random=round(random(1,10));

It will take random as a global variable.

Answer 2

// randomnum can be accessed here

function yourfunction() {
    randomNum = round(random(1, 10);

    //can also be accessed here
}

Removing var auto sets to GLOBAL.