How to count the number of words in a string in JavaScript

In this Article we will go through how to count the number of words in 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 countWords = str => str.trim().split(/\s+/).length;

#Example

countWords('Hello World');        // 2
countWords('Hello    World');     // 2
countWords('  Hello  World  ');   // 2
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