which type javascript code example

Example 1: type of javascript

//typeof() will return the type of value in its parameters.
//some examples of types: undefined, NaN, number, string, object, array

//example of a practical usage
if (typeof(value) !== "undefined") {//also, make sure that the type name is a string
  	//execute code
}

Example 2: check data type in javascript

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

Example 3: type javascirpt

console.log(typeof 42);

Example 4: check data type in js

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

Example 5: typeof javascript

console.log(typeof 'blubber');

Example 6: check data type in js

var x = "Hello World";
typeof x; // "string"