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Introduction to JavaScript Strings

 2 years ago
source link: https://dev.to/naftalimurgor/introduction-to-javascript-strings-fmb
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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"

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

Acess 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

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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
}

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Get length of a JavaScript String 

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

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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.


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