In this Article we will go through how to check if a string contains upper 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 containsUpperCase = str => str !== str.toLowerCase();

In this Article we will go through how to check if a string contains whitespace 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 containsWhitespace = str => str => /\s/.test(str);

In this Article we will go through how to check if a string is a hexadecimal color 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 isHexColor = color => /^#([0-9A-F]{3}|[0-9A-F]{4}|[0-9A-F]{6}|[0-9A-F]{8})$/i.test(color);

In this Article we will go through how to check if a string is a hexadecimal 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 isHexadecimal = str => /^[A-F0-9]+$/i.test(str);

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

In this Article we will go through how to check if a path is relative 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 isRelative = path => !/^([a-z]+:)?[\\/]/i.test(path);

In this Article we will go through how to check if a string is a palindrome 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 isPalindrome = str => str === str.split('').reverse().join('');

In this Article we will go through how to check if a string consists of a repeated character sequence 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 consistsRepeatedSubstring = str => `${str}${str}`.indexOf(str, 1) !== str.length;

In this Article we will go through how to check if a url is absolute 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 isAbsoluteUrl = url => /^[a-z][a-z0-9+.-]*:/.test(url);

In this Article we will go through how to convert a letter to associate emoji 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 letterToEmoji = c => String.fromCodePoint(c.toLowerCase().charCodeAt() + 127365);