Sep 9, 2021 JavaScript
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;

Sep 9, 2021 JavaScript
How to count the occurrences of a character in a string in JavaScript

In this Article we will go through how to count the occurrences of a character 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 countOccurrences = (str, char) => [...str].reduce((a, v) => (v === char ? a + 1 : a), 0);

Sep 9, 2021 JavaScript
How to decapitalize a string in JavaScript

In this Article we will go through how to decapitalize 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 decapitalize = str => `${str.charAt(0).toLowerCase()}${str.slice(1)}`;

Sep 9, 2021 JavaScript
How to escape html special characters in JavaScript

In this Article we will go through how to escape html special characters 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 escape = str => str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/'/g, '&#39;').replace(/"/g, '&quot;');

Sep 9, 2021 JavaScript
How to generate a hash of a string in JavaScript

In this Article we will go through how to generate a hash of 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 hash = str => str.split('').reduce((prev, curr) => Math.imul(31, prev) + curr.charCodeAt(0) | 0, 0);

Sep 9, 2021 JavaScript
How to get the base url without any parameters in JavaScript

In this Article we will go through how to get the base url without any parameters 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 baseUrl = url => url.indexOf('?') === -1 ? url : url.slice(0, url.indexOf('?'));

Sep 9, 2021 JavaScript
How to get the file extension from a file name in JavaScript

In this Article we will go through how to get the file extension from a file name 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 ext = fileName => fileName.split('.').pop();

Sep 9, 2021 JavaScript
How to get the file name from a url in JavaScript

In this Article we will go through how to get the file name from a url 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 fileName = url => url.substring(url.lastIndexOf('/') + 1);

Sep 9, 2021 JavaScript
How to get the length of a string in bytes in JavaScript

In this Article we will go through how to get the length of a string in bytes 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 bytes = str => new Blob([str]).size;

Sep 9, 2021 JavaScript
How to get the number of a character in a string in JavaScript

In this Article we will go through how to get the number of a character 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 characterCount = (str, char) => str.split(char).length - 1;