How to create dynamic variables in JS?

Question

This is my Code:

function NewPerson() {
    var count = parseInt($('#HiddenField').html());
    count++;
    $('#HiddenField').html(count);
    Var dynamicVariable = 'Person'+'Count' 
}

I want to define variable on this line Var **dynamicVariable** = 'Person'+'Count'

Now I need to create variable with count number

Duplicate of https://stackoverflow.com/questions/5117127/use-dynamic-variable-names-in-javascript — Aakash, Dec 05 '17 at 06:41
Are you trying to append the variable `count`? Then, use this `var dynamicVariable = 'Person' + count;` — Eddie, Dec 05 '17 at 06:42
Possible duplicate of [Use dynamic variable names in JavaScript](https://stackoverflow.com/questions/5117127/use-dynamic-variable-names-in-javascript) — Dawid Zbiński, Dec 05 '17 at 06:42
thsi is not duplicate , I cant use this answer [link]https://stackoverflow.com/questions/5117127/use-dynamic-variable-names-in-javascript — Saber Motamedi, Dec 05 '17 at 06:44
dont understand your question. can you elaborate more? like what is that you want to achieve? expected outcome, etc — Sudarpo Chong, Dec 05 '17 at 06:45
i want Create variable whit Count number, i want genrerate this code: var 1=value; var 2= value;var 3= value;var 4= value; ...... — Saber Motamedi, Dec 05 '17 at 06:51

Hrishikesh · Accepted Answer · 2017-12-06T06:03:40.820

4

You could also try this.

  var count = 1; //Let this be your count variable.
  var PersonString = "Person" + count; //Building a dynamic name for your variable
  alert(PersonString); //Person1 will be alerted
  window[PersonString] = "One";
  alert(Person1); //One will be alerted.

Click here for the fiddle.

P.S : Here variables created dynamically will have a global scope.

edited Dec 06 '17 at 06:03

answered Dec 05 '17 at 06:42

Hrishikesh

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score 2 · Answer 2 · answered Dec 05 '17 at 06:57

Usually, the design pattern in this scenario is to use an object.

//These are your variables
var myVar1 = '1';
var myVar2 = '2';

//The object holding all your dynamic variables
var MyVarObj = {};


//Create dynamic variables (object properties)
MyVarObj[myVar1] = 'value1'
MyVarObj[myVar2] = 'value2'


console.log(MyVarObj);   // {1: 'value1', 2: 'value2'}

How to create dynamic variables in JS?

2 Answers2