JavaScript String Reference

JavaScript strings are used for storing and manipulating text content. They can contain zero or more characters within single or double quotes, like “Geeksforgeeks” or ‘Geeksforgeeks‘.

Syntax

String(object)

Example: In this example, we will return the length of a string.

function stringLength() {
    const str = "GeeksforGeeks";

    console.log("String Length: " + str.length);
}

stringLength();

Output:

String Length: 13

Example: Date Object’s String Value

This example demonstrates how to return the Date() object’s string value.

// Date Object having date and time
const currentDate = new Date()

// date object's string value
const currentDate_String = currentDate.toString()

console.log("Date Object's String Value: " + currentDate_String)

Date Object's String Value: Wed Jul 10 2024 06:48:56 GMT+0000 (Coordinated Universal Time)

The complete list of JavaScript Strings has listed below:

JavaScript String Constructor

In JavaScript, a constructor gets called when an object is created using the new keyword.

JavaScript String Properties

A JavaScript property is a member of an object that associates a key with a value. There is no static property in the string only instance property.

• Instance Property: An instance property is a property that has a new copy for every new instance of the class.

JavaScript String Methods

JavaScript methods are actions that can be performed on objects. There are two types of String methods in JavaScript.

• Static Method: If the method is called using the string class itself then it is called a static method.

• Instance Method: If the method is called on an instance of a string then it is called an instance method.

Common Use Cases of JavaScript Strings

JavaScript strings are widely used for various operations, including:

• Manipulating Text Content: Extracting, replacing, and transforming text in web applications.
• Data Validation: Checking and validating user inputs.
• Localization: Adapting applications for different languages and regions using string methods like toLocaleString().

Comparison with Other Data Types

JavaScript strings can be compared with other data types to understand their unique properties:

• Arrays: While both strings and arrays are iterable, strings are immutable whereas arrays are mutable.
• Numbers: Strings and numbers can be coerced into each other, but their behaviors in arithmetic and concatenation operations differ.

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