how to acces variables from another function?

Question

How to acces variable from another function? alert from function 1 takes the sum of the 2 variables from function 2

fun1();

function fun1() {
  alert("var two + var three = " + two + three);
}

function fun2() {
  var one = 1;
  var two = 2;
  var three = 3;
  var four = 4;
}

`fun2()` isn't even called, so the variables are never created? — Bergi, Nov 11 '21 at 09:32

score 0 · Accepted Answer · edited Jun 14 '22 at 05:13

0

Either define these variables globally outside of both functions (a very bad practice for any real world program - but suitable enough for an example) - or provide them as arguments to the alert function.

var one, two, three, four;

fun1();

function fun1 ()
{
  fun2();
  alert("var two + var three = " + two +  three);
}

function fun2 ()
{
  one = 1;
  two = 2;
  three = 3;
  four = 4;
}

fun2();

function fun1 (one, two, three, four)
{
  alert("var two + var three = " + two +  three);
}

function fun2 ()
{
  fun1(1, 2, 3, 4);
}

edited Jun 14 '22 at 05:13

innocent

864
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17

answered Nov 11 '21 at 09:18

IVO GELOV

13,496
1
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26

Got it, Thank you very much. – irureta Nov 11 '21 at 09:37

score 0 · Answer 2 · answered Nov 11 '21 at 09:21

This is not possible to access a variable from outside of Scope

if you want to access it from more functions then make it global. Like below.

fun2();   
fun1();
var two = 2;
var three = 3;
function fun1() {
  alert("var two + var three = " + two + three);
}

function fun2() {
  var one = 1;
  two = two + 2;
  three = three +3;
  var four = 4;
}

how to acces variables from another function?

2 Answers2