The substring() method extracts characters from start to end (exclusive). The substring() method does not change the original string. If start is greater than end, arguments are swapped: (4, 1) = (1, 4).

Mar 26, 2025 · substring() extracts characters from indexStart up to but not including indexEnd. In particular: If indexEnd is omitted or undefined, substring() extracts characters to the end of the string. If indexStart is equal to indexEnd, substring() returns an empty string.

Nov 28, 2024 · The substring() method in JavaScript is used to extract characters between two indices from a string, without modifying the original string. This method returns a new string that is a part of the original string, starting from a specified position up to (but not including) another specified position.

1) Extracting a substring from the beginning of the string example. The following example uses the substring method to extract a substring starting from the beginning of the string: let str = 'JavaScript Substring'; let substring = str.substring(0, 10); console.log(substring); Code language: JavaScript (javascript) Output:

Apr 4, 2013 · You're confusing substring() and substr(): substring() expects two indices and not offset and length. In your case, the indices are 5 and 2, ie characters 2..4 will be returned as the higher index is excluded.

substring() Return Value. Returns a new string containing the specified part of the given string. Note: substring() does not change the original string.

Mar 7, 2022 · The substring() function is used to extract a substring between the start and the end positions. Here is the substring() function syntax. str.substring(start[, end]);

May 8, 2023 · In this blog post, we'll explore the JavaScript substring method, complete with examples to help you gain a deeper understanding of this versatile string manipulation function. Understanding...

This JavaScript tutorial explains how to use the string method called substring() with syntax and examples. In JavaScript, substring() is a string method that is used to extract a substring from a string, given start and end positions.

Sep 28, 2024 · The substring method in JavaScript is a powerful tool for extracting specific portions of strings. Understanding how to utilize this function can significantly enhance your programming skills and enable you to manipulate strings effectively.