Introduction to JavaScript Strings

Introduction

JavaScript Strings provide a way of representing and handling characters.

JavaScript Strings

A JavaScript string is a set of character(s) written inside quotes.

// with single quote
let emptyString = '' // an empty string
let name = 'Elon Musk'

// with double quotes
let project = "SpaceX"

Declaring a String in JavaScript does not restrict usage of single '' and double quotes ""

Acess a character

String objects provide a useful method for accessing a character in a string

let catName = 'Anita'
console.log(catName.charAt(0)) // prints 'A', character at a position 0

Strings behave like Array-like objects, so above can be:

let catName = 'Anita'
console.log(catName[0])// prints 'A'
// looping throug each character
for (let i = 0; i < catName.length; i ++) {
  console.log(catName[i]) // A, n, i, t, a
}

Get length of a JavaScript String

const THREAD_NAME = 'Moonspiracy'
console.log(THREAD_NAME.length) // prints number of characters// 11

Summary

JavaScript Strings provide a way of presenting strings using double or single quotes. Both syntaxes are valid and usage is based on project style guide and preferences.