How to call a JavaScript function using variable [duplicate]

Question

How to call JavaScript or jquery function using variable.

var fnName= "abc"; //how to use fnName as a function call where "abc" will be function name

function abc(){   //definition........ }

I think these answers might help: stackoverflow.com/questions/359788/… — Schwesi
– Schwesi, Commented Sep 6, 2017 at 5:53
Best way is to wrap these functions in an object and the object[functionName]() — Rajesh Dixit
– Rajesh Dixit, Commented Sep 6, 2017 at 5:56

Harish Kommuri · Accepted Answer · 2017-09-06 06:12:19Z

4

Define function globally.

First Way Call as window[functionName]().

function abc() {
  alert('test');
}

var funcName = 'abc';

window[funcName]();

Second Way Add function to defined object.

function parentFunc(name) {
  var childFuncs = {
    "abc": function() {
      alert("test");
    }
  }
  
  childFuncs[name]();
}

var funcName = 'abc';

parentFunc(funcName);

edited Sep 6, 2017 at 6:12

answered Sep 6, 2017 at 6:10

Harish Kommuri

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1 Comment

Koushik Chatterjee Over a year ago

but it will not work inside any other funcion/nested scope, and may be changing the requirement to declare globally

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