StringprototypetrimStarttrimEnd

StringprototypetrimStarttrimEnd is a JavaScript method that returns a new string with whitespace removed from both the beginning and the end of a string. This method is an alias for calling String.prototype.trimStart() followed by String.prototype.trimEnd().

The trimStart() method removes whitespace from the beginning of a string, while trimEnd() removes whitespace from the end. By combining them, trimStarttrimEnd ensures that any leading or trailing whitespace characters are eliminated from the string. Whitespace characters include spaces, tabs, and various Unicode whitespace characters.

This method does not modify the original string. Instead, it returns a new string with the whitespace removed. This immutability is a common characteristic of string manipulation methods in JavaScript.

Example usage:

let originalString = " Hello, World! ";

let trimmedString = originalString.trimStart().trimEnd(); // or originalString.trimStarttrimEnd();

console.log(trimmedString); // Output: "Hello, World!"

The trimStarttrimEnd method is useful for cleaning up user input, processing data from external sources, or ensuring consistent string formatting. It provides a straightforward way to handle common whitespace issues without needing to write custom logic. It is supported in all modern web browsers and Node.js environments.