How to check if a value is a string in JavaScript

In this Article we will go through how to check if a value is a string only using single line of code in JavaScript. This is a one-line JavaScript code snippet that uses one of the most popular ES6 features => Arrow Function.

Let's define this short function:

const isString = value => Object.prototype.toString.call(value) === '[object String]';

isString('hello world');                // true
isString(new String('hello world'));    // true
isString(10);                           // false