Introduction Of Strings

Introduction of Strings
A string in JavaScript is a sequence of characters used to represent text. Strings are enclosed in single quotes ('), double quotes ("), or backticks (`). They are immutable, meaning once a string is created, its content cannot be changed (though you can assign a new string to the same variable).

Defining Strings

let singleQuoteString = 'Hello, World!';

let doubleQuoteString = "Hello, World!";

let backtickString = `Hello, Template Literals!`;

Template Literals
Template literals are a modern way of working with strings in JavaScript, introduced in ES6. They are enclosed by backticks (`) and allow embedding expressions using the syntax ${expression}. They also support multi-line strings without needing escape characters.

const name = 'Alice';
  const age = 25;
  console.log(`My name is ${name} and I am ${age} years old.`);
  // Output: My name is Alice and I am 25 years old.

const multiLine = This is a 
  multi-line
  string.; 
  console.log(multiLine);

Escape Sequences
Escape sequences in JavaScript are used to include special characters within a string. They begin with a backslash (\), followed by a character that represents the desired special character.

Example of Escape Sequence

let singleQuote = 'It\'s a sunny day!'; // Escaping a single quote
    let doubleQuote = "She said, \"Hello!\""; // Escaping a double quote
    let newLine = "Hello\nWorld!"; // Newline
    let tab = "Name\tAge"; // Tab
    
    console.log(singleQuote); // It's a sunny day!
    console.log(doubleQuote); // She said, "Hello!"
    console.log(newLine);
    // Output:
    // Hello
    // World!
    console.log(tab); // Name Age