Who should take this course?

Grokking JavaScript Fundamentals

Rate this course

Ask Author

Contribute

Back to course home

0% completed

Vote For New Content

Introduction

Who should take this course?

Course Overview

Introduction to JavaScript

JavaScript Basics

JavaScript - Hello World

JavaScript - Comments

Quiz

JavaScript Variables and Operators

JavaScript - Variables

JavaScript - Operators

Quiz

JavaScript Conditionals

Introduction to Conditional Statements in JavaScript

JavaScript - If...Else

JavaScript - Switch Case

Quiz

JavaScript Objects

Introduction to Objects in JavaScript

JavaScript - Number

JavaScript - Boolean

JavaScript - Math

JavaScript - Date

Quiz

JavaScript - Functions

Introductions to Function in JavaScript

JavaScript - Variable Scope

JavaScript - Default Parameters

JavaScript - Arrow Functions

Quiz

JavaScript - String and Arrays

Introduction to Strings in JavaScript

JavaScript - String Methods

Introduction to Array in JavaScript

JavaScript - Array Methods

Quiz

JavaScript Loops

Introduction to loops in JavaScript

JavaScript - for loop

JavaScript - while loop

JavaScript - do-while loop

JavaScript - for-in loop

JavaScript - for-of loop

JavaScript - Loop Control

Quiz

JavaScript - Maps and Sets

JavaScript - Maps

JavaScript - Sets

Quiz

Conclusion

Where to Go from Here

JavaScript - String Methods

JavaScript provides a couple of methods for working with strings, enabling developers to perform manipulations, searches, transformations, and much more. Below is a comprehensive table of string methods available in JavaScript:

JavaScript String Properties

Here's a table for the commonly used string property:

Sr.No	Property	Description
1	`length`	Returns the length of the string.

JavaScript String Methods

Here's an expanded table of string methods including the additional ones as per the tutorial:

Sr.No	Method Name	Description
1	`charAt()`	Returns the character at the specified index (position).
2	`charCodeAt()`	Returns the Unicode of the character at the specified index.
3	`concat()`	Joins two or more strings, and returns a new joined strings.
4	`fromCharCode()`	Converts Unicode values to characters.
5	`includes()`	Determines whether a string contains a specified string/characters.
6	`endsWith()`	Determines whether a string ends with specified string/characters.
7	`indexOf()`	Returns the position of the first found occurrence of a specified value in a string.
8	`lastIndexOf()`	Returns the position of the last found occurrence of a specified value in a string.
9	`localeCompare()`	Compares two strings in the current locale.
10	`match()`	Searches a string for a match against a regular expression, and returns the matches.
11	`repeat()`	Returns a new string with a specified number of copies of an existing string.
12	`replace()`	Searches a string for a specified value, or a regular expression, and returns a string where the specified values are replaced.
13	`search()`	Searches a string for a specified value, or regular expression, and returns the position of the match.
14	`slice()`	Extracts a part of a string and returns a new string.
15	`split()`	Splits a string into an array of substrings.
16	`startsWith()`	Determines whether a string begins with specified characters.
17	`substr()`	Extracts the characters from a string, beginning at a specified start position, and through the specified number of character.
18	`substring()`	Extracts the characters from a string, between two specified indices.
19	`toLocaleLowerCase()`	Converts a string to lowercase letters, according to the host's current locale.
20	`toLocaleUpperCase()`	Converts a string to uppercase letters, according to the host's current locale.
21	`toLowerCase()`	Converts a string to lowercase letters.
22	`toUpperCase()`	Converts a string to uppercase letters.
23	`toString()`	Returns the value of a String object.
24	`trim()`	Removes whitespace from both ends of a string.
25	`valueOf()`	Returns the primitive value of a String object.
26	`trimStart()`	Removes whitespace from the beginning of a string.
27	`trimEnd()`	Removes whitespace from the end of a string.

Examples

Example 1: Using the length Property

The length property returns the number of characters in a string, including spaces and special characters.

Javascript

. . . .

message.length evaluates to 13 because the string "Hello, World!" consists of 13 characters, including punctuation and spaces.

Example 2: Using the slice() Method

The slice() method extracts a section of a string and returns it as a new string, without modifying the original string. It takes two arguments: the starting index and the ending index (the end index is not included in the result).

Javascript

. . . .

text.slice(0, 5) extracts characters from index 0 to index 5 (not including the character at index 5), resulting in the substring "Hello".
The original string, text, remains unchanged after the operation.

Example 3: Using the toUpperCase() Method

The toUpperCase() method converts the entire string to uppercase letters. It does not take any arguments and does not modify the original string.

Javascript

. . . .

greeting.toUpperCase() converts "Hello, world!" to uppercase, resulting in "HELLO, WORLD!".
This method is often used for normalization or when comparing strings in a case-insensitive manner.

Each of these examples demonstrates practical uses of JavaScript string methods and properties, showcasing how they can be applied to manipulate and analyze text data effectively.

Introduction to Strings in JavaScript

Introduction to Array in JavaScript

Mark as Completed

On this page

JavaScript String Properties

JavaScript String Methods

Examples