w3resource

JavaScript: Check if a string ends with specified suffix

JavaScript String: Exercise-30 with Solution

Write a JavaScript function check if a string ends with specified suffix.

Test Data :
console.log(string_endsWith('JS PHP PYTHON','PYTHON'));
true
console.log(string_endsWith('JS PHP PYTHON',''));
false

Pictorial Presentation:

JavaScript: Check if a string ends with specified suffix

Sample Solution:-

HTML Code:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>JavaScript function check if a string ends with specified suffix</title>
</head>
<body>

</body>
</html>

JavaScript Code:

function string_endsWith(str, suffix) 
{
 
 if (((str===null) || (str==='')) || ((suffix===null) || (suffix==='')))
   {
    return false;
   }
  else
  {     
   str = str.toString();
   suffix = suffix.toString();
   }
 return str.indexOf(suffix, str.length -     suffix.length) !== -1;
}

console.log(string_endsWith('JS PHP PYTHON','PYTHON'));

console.log(string_endsWith('JS PHP PYTHON',''));

Sample Output:

true
false

Flowchart:

Flowchart: JavaScript- Check if a string ends with specified suffix

Live Demo:

See the Pen JavaScript Check if a string ends with specified suffix - string-ex-30 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function to find a word within a string.
Next: Write a JavaScript function to escapes special characters (&, <, >, ', ") for use in HTML.

What is the difficulty level of this exercise?



JavaScript: Tips of the Day

Converts a given string into an array of words

Example:

const words = (str, pattern = /[^a-zA-Z-]+/) => str.split(pattern).filter(Boolean);
console.log(words('I love javaScript!!')); // ["I", "love", "javaScript"]
console.log(words('python, javaScript & coffee')); // ["python", "javaScript", "coffee"]

Output:

["I", "love", "javaScript"]
["python", "javaScript", "coffee"]