check typeof string javascript code example

Example 1: check type string javascript

if (typeof myVar === 'string' || myVar instanceof String)
// it's a string
else
// it's something else

Example 2: 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 3: check data type in js

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