CODEWITHSUNDEEP
javascript
Panda
Panda

Reputation: 21

How to declare a variable type in javascript?

I was doing JavaScript, and I was wondering : can we declare a type for our variable ? if yes, how?

Upvotes: 2

Views: 6173

Answers (4)

SdSaati
SdSaati

Reputation: 910

see http://www.w3schools.com/js/js_datatypes.asp

types in javascript are automatically and when you assign something to a variable for example 

var myVar = "Hello World";

the type of myVar changed automatically to string and you can see it with the typeof function

Upvotes: 0

EasyBB
EasyBB

Reputation: 6554

Technically you don't need to/can't because JavaScript is a loosely written coding language. Though when you declare a variable it is that datatype, only difference is that we can overwrite these values and the datatype is updated.

var one = 15; //int
var two = "Hello";//string
var three = false; //boolean
var four = ["hello","world"];//object Array
var five = {prop:"key"}; //object Object

Now we can also rewrite these and the datatype will be changed. To check for the data type do

console.log(typeof one);

Upvotes: 0

user4103823
user4103823

Reputation:

You can not defive the type of a Javascript variable Because it can contain everything from text to number

Upvotes: 0

brso05
brso05

Reputation: 13222

No javascript variables are not typed.

Upvotes: 3

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