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 check if a string is a mongodb objectid 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 isMongoId = str => str.length === 24 && /^[A-F0-9]+$/i.test(str);

In this Article we will go through how to check if a string is an octal 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 isOctal = str => /^(0o)?[0-7]+$/i.test(str);

In this Article we will go through how to check if a string is lower case 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 isLowerCase = str => str === str.toLowerCase();

In this Article we will go through how to check if a string is upper case 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 isUpperCase = str => str === str.toUpperCase();

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);

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('?'));

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 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 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);