StringprototypetrimStart

String.prototype.trimStart is a method in JavaScript that is used to remove whitespace characters from the beginning of a string. It was introduced in ECMAScript 2019 (ES10) as an alternative to the existing String.prototype.trimLeft method, which served the same purpose. The trimStart method does not modify the original string but instead returns a new string with the leading whitespace removed.

The method takes no arguments and returns a new string with all leading whitespace characters removed. Whitespace characters include spaces, tabs, and line breaks. If the string does not start with any whitespace characters, the method returns the original string unchanged.

Here is an example of how to use the trimStart method:

let originalString = " Hello, World!";

let trimmedString = originalString.trimStart();

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

In this example, the originalString has leading spaces that are removed by the trimStart method, resulting in the trimmedString.

The trimStart method is particularly useful when you need to clean up user input or process strings where leading whitespace might cause issues. It provides a straightforward and efficient way to handle such cases without modifying the original string.