Introduction

Beyond the basic string methods, JavaScript offers many more useful methods to manipulate, inspect, and transform text efficiently. ✨

1️⃣ charAt()

Returns the character at a specific index in the string.

const str = "Hello";
console.log(str.charAt(1)); // "e"

2️⃣ charCodeAt()

Returns the Unicode value of the character at a specific index.

const str = "A";
console.log(str.charCodeAt(0)); // 65

3️⃣ repeat()

Repeats the string a specified number of times.

const str = "Hi! ";
console.log(str.repeat(3)); // "Hi! Hi! Hi! "

4️⃣ substring()

Returns a part of the string between two indices.

const str = "Hello World";
console.log(str.substring(0,5)); // "Hello"

5️⃣ toLocaleUpperCase()

Converts string to uppercase according to locale rules.

const str = "i";
console.log(str.toLocaleUpperCase('tr')); // "İ" (Turkish locale)

6️⃣ toLocaleLowerCase()

Converts string to lowercase according to locale rules.

const str = "I";
console.log(str.toLocaleLowerCase('tr')); // "ı" (Turkish locale)