JavaScript Tutorial
JavaScript Strings (All Methods With Example)
Table of Contents
- Introduction
- What is a JavaScript String?
- Why Use Strings in JavaScript?
- Features of Strings in JavaScript
- How to Create Strings
- String Properties
- Accessing String Characters
- String Methods
- Template Literals
- Common Use Cases for Strings
- Common Mistakes to Avoid with JS Strings
FAQs about JS Strings
No, strings are immutable. Operations like replace() or slice() create new strings.
Strings can be defined using single quotes ('), double quotes ("), or template literals (`). Template literals allow for embedding variables and creating multiline strings.
slice() supports negative indexes.
substring() treats negative values as 0.
Strings are immutable, meaning once a string is created, its content cannot be changed. Any operation that modifies a string creates a new string instead of altering the original.
JavaScript strings are zero-indexed, meaning the first character of a string is at index 0, the second at index 1, and so on. This indexing system allows for easy access to individual characters.
The length property returns the total number of characters in a string, including spaces and special characters. It is a built-in property of all string objects.
Common string operations include accessing characters, finding substrings, concatenating strings, modifying case (uppercase/lowercase), trimming whitespace, and replacing parts of the string.
The charAt() method retrieves the character at a specified index in a string. It is one of the built-in methods used to access characters.
Template literals allow for embedding variables and expressions using ${} and can also handle multiline strings without the need for concatenation.
