how to use typeof code example

Example 1: check data type in javascript

typeof("string"); //string
typeof(123); //number

Example 2: javascript check type of variable var

// You can use the built-in method 'typeof' in order to check the variable datatype

//examples:

typeof "hello" // "string"

//or
var a = 1;
typeof(a);
//the output will be > 'number'

Example 3: typeof in js

var someValue = 'this is string';
console.log(typeof(someValue)); // this will return string

Example 4: javascript typeof

exports.is = (data) => {
const isArray = Array.isArray(data) && 'array'
const isObject = data == {} && 'object'
const isNull =  data == null && 'null'

const isGrouping =  isArray || isObject || isNull
const isCheck = !isGrouping ? typeof data : isGrouping

const isTypeData = ['number','string','array','symbol','object','undefined','null','function', 'boolean']
const isMatch = isTypeData.indexOf(isCheck)
const isResult = isTypeData[isMatch]
return isResult
}

Example 5: typeof in js

typeof("iAmAString");//This should return 'string'
//NO camelCase, as it is a JS Keyword

Example 6: typeof javascript

console.log(typeof 'blubber');