How to useString’s substr() Method in Javascript
The substr() method is used to extract parts of a string, beginning at the specified start position, and returns the specified number of characters starting from that position to the end of the string.
Syntax:
string.substr(startIndex, length)
Example:
function getLastNCharacters(str, n) {
return str.substr(Math.max(str.length - n, 0));
}
let str = "JavaScript is awesome";
let n = 7;
console.log(getLastNCharacters(str, n)); // Output: "awesome"
Output
awesome
How to Get the Last N Characters of a String in JavaScript
We will learn how to get the last N characters of a string in JavaScript. We have given a string and we need to get the “n” character from the last of the string. There are various methods for finding the “n” character from the last of the string.
Below are the following methods through which we get the last N characters of a string in JavaScript:
Table of Content
- Approach 1: Using substring() Method in JavaScript
- Approach 2: Using slice() Method in JavaScript
- Approach 3: Using loop and string concatenation
- Approach 4: Using String’s substr() Method
- Approach 5: Using Array.from() and slice() Method
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