In this Article we will go through how to check if a number is a power of 2 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 isPowerOfTwo = number => (number & (number - 1)) === 0;

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]}), {});

In this Article we will go through how to check if a number is in a given range 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 inRange = (num, a, b, threshold = 0) => (Math.min(a, b) - threshold <= num && num <= Math.max(a, b) + threshold);

In this Article we will go through how to check if a number is even 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 isEven = number => number % 2 === 0;

In this Article we will go through how to check if a number is negative 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 isNegative = number => Math.sign(number) === -1;

In this Article we will go through how to check if a string contains lower case 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 containsLowerCase = str => str !== str.toUpperCase();

In this Article we will go through how to check if a date is a weekday 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 isWeekday = (date = new Date()) => date.getDay() % 6 !== 0;

In this Article we will go through how to check if a string contains only ascii 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 isAscii = str => /^[\x00-\x7F]+$/.test(str);

In this Article we will go through how to check if a string contains only digits 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 isNumeric = str => !/[^0-9]/.test(str);

In this Article we will go through how to check if a string contains only letters and numbers 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 isAlphanumeric = str => /^[0-9A-Z]+$/i.test(str);