In this Article we will go through how to remove empty lines of a text document 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 removeEmptyLines = str => str.split(/\r?\n/).filter(line => line.trim() !== '').join('\n');

In this Article we will go through how to remove spaces from 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 removeSpaces = str => str.replace(/\s/g, '');

In this Article we will go through how to repeat 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 repeat = (str, numberOfTimes) => str.repeat(numberOfTimes);

In this Article we will go through how to replace all line breaks with br elements 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 nl2br = str => str.replace(new RegExp('\r?\n', 'g'), '<br>');

// In React
str.split('\n').map((item, index) => <React.Fragment key={index}>{item}<br /></React.Fragment>)

In this Article we will go through how to replace all tab characters with spaces 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 replace = (str, numSpaces = 4) => str.replaceAll('\t', ' '.repeat(numSpaces));

In this Article we will go through how to replace multiple spaces with a single space 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:

// Replace spaces, tabs and new line characters
const replaceSpaces = str => str.replace(/\s\s+/g, ' ');

// Only replace spaces
const replaceOnlySpaces = str => str.replace(/  +/g, ' ');

In this Article we will go through how to replace the first given number of characters of a string with another character 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 mask = (str, num, mask) => `${str}`.slice(num).padStart(`${str}`.length, mask);

In this Article we will go through how to reverse 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 reverse = str => str.split('').reverse().join('');

In this Article we will go through how to invert keys and values of an object 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 invert = obj => Object.keys(obj).reduce((res, k) => Object.assign(res, {[obj[k]]: k}), {});

In this Article we will go through how to omit a subset of properties from an object 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 omit = (obj, keys) => Object.keys(obj).filter(k => !keys.includes(k)).reduce((res, k) => Object.assign(res, {[k]: obj[k]}), {});