What is a substring in JavaScript?

What is a substring in JavaScript?

JavaScript String – substring() Method. Description. This method returns a subset of a String object. Syntax. Argument Details. indexA − An integer between 0 and one less than the length of the string. indexB − (optional) An integer between 0 and the length of the string.

What is the purpose of the substring() method?

Definition and Usage. The substring() method extracts the characters from a string, between two specified indices, and returns the new sub string. This method extracts the characters in a string between “start” and “end”, not including “end” itself. If “start” is greater than “end”, this method will swap the two arguments,…

How do I extract a substring from the beginning of a string?

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)

What is the difference between indexOf and substring in JavaScript?

First, the indexOf () returns the position of the @ character. Then the substring returns the domain that starts from the index of @ plus 1 to the end of the string. The JavaScript substring () returns the substring from a string between the start and end indexes.

A substring is a subset of another string: “I am learning JavaScript and it is cool!” –> Original String “I am learning JavaScript” –> Substring “JavaScript is cool!”

How to get a substring starting from the 6th character?

Then we get a substring starting from the 6th character until the end of the original string. 2. The slice ( ) Method The slice ( ) method is similar to the substring ( ) method and it also returns a substring of the original string. The slice method also expects the same two parameters:

How to get the first 10 characters of a string in JavaScript?

Suppose that we have the example string below: const myString = “I am learning JavaScript and it is cool!”; Now if we set the startIndex as 0 and the endIndex as 10, then we will get the first 10 characters of the original string: