Basic String Methods. Javascript strings are primitive and immutable: All string methods produce a new string without altering the original string.

Apr 10, 2025 · Some of the most-used operations on strings are to check their length, to build and concatenate them using the + and += string operators, checking for the existence or location of substrings with the indexOf() method, or extracting substrings with the substring() method.

Mar 7, 2025 · JavaScript strings are the sequence of characters. They are treated as Primitive data types. In JavaScript, strings are automatically converted to string objects when using string methods on them. This process is called auto-boxing. …

String Properties and Methods. Normally, strings like "John Doe", cannot have methods or properties because they are not objects. But with JavaScript, methods and properties are also available to strings, because JavaScript treats strings …

To find the length of a string, use the built-in length property: Because strings must be written within quotes, JavaScript will misunderstand this string: let text = "We are the so-called "Vikings" from the north."; The string will be chopped to "We are the so-called ". To solve this problem, you can use an backslash escape character.

Mar 29, 2023 · JavaScript comes with a variety of built-in methods that are ready to be used as soon as the language is implemented. These methods are pre-written methods and perform specific tasks such as...

This page provides you with the most commonly used JavaScript string methods that help you manipulate strings effectively.

In this reference page, you will find all String methods and properties available in JavaScript. For example, the toUpperCase () method returns the string converted to uppercase. Returns the number of characters in a string. replace a substring/pattern in the string. Returns the first index of occurrence of a value.

JavaScript provides a wide range of string methods for various tasks. Basic methods include charAt, includes, and slice. Advanced methods include replaceAll, split, and padStart. String methods are essential in real-world applications like form validation.

22 hours ago · JavaScript String Method JavaScript string method converts the string to uppercase letter on the basis of host's current locale. In most cases, this method returns the similar result as the toUpperCase() method. Syntax The method is represented by the following syntax: string. Returns A string of... 1 min read . charAt()