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JavaScript: Test whether a string ends with a specified string

JavaScript String: Exercise-47 with Solution

Write a JavaScript function to test whether a string ends with a specified string.

Test Data:
console.log(endsWith('JS string exercises', 'exercises'));
true

Pictorial Presentation:

JavaScript: Test whether a string starts with a specified string

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function to test whether a string ends with a specified string</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function endsWith(input, string) {
        var index = input.length - string.length;
        return index >= 0 && input.indexOf(string, index) > -1;
    }
console.log(endsWith('JS string exercises', 'exercises'));

Sample Output:

true

Flowchart:

Flowchart: JavaScript: Test whether a string ends with a specified string

Live Demo:

See the Pen JavaScript Test whether a string ends with a specified string-string-ex-47 by w3resource (@w3resource) on CodePen.


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JavaScript: Tips of the Day

How to check whether a string contains a substring in JavaScript?

ECMAScript 6 introduced String.prototype.includes:

const string = "foo";
const substring = "oo";

console.log(string.includes(substring));

includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:

var string = "foo";
var substring = "oo";

console.log(string.indexOf(substring) !== -1);

Ref: https://bit.ly/3fFFgZv