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();

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);

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;

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;

In this Article we will go through how to make the first character of a string lowercase 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 lowercaseFirst = str => `${str.charAt(0).toLowerCase()}${str.slice(1)}`;

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;');

In this Article we will go through how to convert snake_case to camelcase 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 snakeToCamel = str => str.toLowerCase().replace(/(_\w)/g, m => m.toUpperCase().substr(1));

In this Article we will go through how to convert the name of an excel column to number 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 getIndex = col => col.split('').reduce((prev, next) => prev * 26 + parseInt(next, 36) - 9, 0);

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;

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);