Calling Function in js by storing function name in variable

Question

I have one function named root and at next part I am storing function name in variable (call) . I want to call function by using variable name For Example:-

(note:- not using root() using variable call's value )

 call = "root";

 root = function() {
    name = "This is My root function";
    console.log(name)
 }

Can we call root function by value of variable (call) Is it possible.

While this is possible I strongly suggest you consider your design. Do you absolutely NEED the variable to contain the function name? Javascript variables can point to the function itself: `call = root` instead of `call = "root"`. If all you need is to implement some sort of function calling logic then use function references instead of function names. — slebetman, Nov 06 '17 at 03:20

score 2 · Accepted Answer · answered Nov 06 '17 at 03:05

2

Assuming call is a global browser variable, you can do:

window[call]();

answered Nov 06 '17 at 03:05

Jim Cote

1,746
3
15
26

score 2 · Answer 2 · answered Nov 06 '17 at 03:06

2

eval() is probably what you need, but use with caution.

answered Nov 06 '17 at 03:06

Sean Wu

31
2

Don't do this ─ use the answer by @jim-cote. – jhpratt Nov 06 '17 at 03:09
@jhpratt Please put your explanation along with `"Don't do this"`. – Shiladitya Nov 06 '17 at 03:13

Calling Function in js by storing function name in variable

2 Answers2