Call javascript functions Dynamically

Question

i am generating dynamic javascript in which i create few functions for storing value

function get[dynamicname](){
    return "some value";
}

i want to call this method in another function to get the values of all functions i created

i have all the dynamicnames which i used to create the functions in the function which i am calling..

function getallfunctionvals(){
    for ( var i = 0; i < array.length; i++ ) {
        var s="get";
        var ss="()";
        console.log(s+array[i]+ss);
    }
}

this is how i am calling the dynamically generated functions but in the console i am getting the function name as string not the value inside it

if the function is in global scope then you can use eval(s+array[i]+ss) - stackoverflow.com/questions/86513/… — Arun P Johny
– Arun P Johny, Commented Aug 28, 2014 at 6:37
But he shouldn't. Use a map of functions, don't define functions in the global scope. — Denys Séguret
– Denys Séguret, Commented Aug 28, 2014 at 6:37
Agree, window[dynamic] is not a solution, nor is eval. This looks like a common XY problem. — elclanrs
– elclanrs, Commented Aug 28, 2014 at 6:40

Community · Accepted Answer · 2017-05-23 12:21:23Z

1

Hi look at This post.

One of the answer:

if you know that its a global function you can use:

var functPtr = window[func_name];
//functPtr()

Otherwise replace window with the parent object containing the function.

edited May 23, 2017 at 12:21

CommunityBot

11 silver badge

answered Aug 28, 2014 at 6:39

Orelsanpls

23.7k7 gold badges46 silver badges74 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Mritunjay · Accepted Answer · 2014-08-28 06:39:12Z

0

if defined function is in gloabal scope, you can use

window[s+array[i]]()

So if you have a function like getName. what it will do it will call something like

window["getName"]();

answered Aug 28, 2014 at 6:39

Mritunjay

25.9k7 gold badges57 silver badges71 bronze badges

Comments

Vicky · Accepted Answer · 2014-08-28 06:40:16Z

0

you can use eval function. Eg.

            var s = eval("function get(){}; gat();");

answered Aug 28, 2014 at 6:40

Vicky

6135 silver badges6 bronze badges

1 Comment

Prabhu Murthy Over a year ago

eval function is evil

Nicolas S.Xu · Accepted Answer · 2014-08-28 06:46:57Z

0

first of all:

function get[dynamicname](){
return "some value";
}

will generate error: SyntaxError: Unexpected token [

Since "[" is not allowed in javascript function name and variable.

But you can do this:

function getName () {console.log('Name')};
function getAge  () {console.log('Age')};

When you invoke the above functions, you can do this:

var s="get";
var thingToGet = "Name";
var ss="()";

eval(s + thingToGet + ss)

Did I answer your question?

answered Aug 28, 2014 at 6:46

Nicolas S.Xu

14.6k35 gold badges91 silver badges138 bronze badges

Collectives™ on Stack Overflow

Call javascript functions Dynamically

4 Answers 4

Comments

Comments

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

4 Answers 4

Comments

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related