JavaScript: Test whether a string starts with a specified string
JavaScript String: Exercise-46 with Solution
Write a JavaScript function to test whether a string starts with a specified string.
Test Data:
console.log(startsWith('js string exercises', 'js'));
true
Pictorial Presentation:

Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>JavaScript function to test whether a string starts with a specified string</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function startsWith(input, string) {
return input.indexOf(string) === 0;
}
console.log(startsWith('js string exercises', 'js'));
Sample Output:
true
Flowchart:

Live Demo:
See the Pen JavaScript Test whether a string starts with a specified string-string-ex-46 by w3resource (@w3resource) on CodePen.
Improve this sample solution and post your code through Disqus
Previous: Write a JavaScript function to get humanized number with the correct suffix such as 1st, 2nd, 3rd or 4th.
Next: Write a JavaScript function to test whether a string ends with a specified string.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
JavaScript: Tips of the Day
Tagged template literals
function getPersonInfo(one, two, three) { console.log(one); console.log(two); console.log(three); } const person = 'Lydia'; const age = 21; getPersonInfo`${person} is ${age} years old`;
If you use tagged template literals, the value of the first argument is always an array of the string values. The remaining arguments get the values of the passed expressions!
Ref: https://bit.ly/323Y0P6
- Exercises: Weekly Top 12 Most Popular Topics
- Pandas DataFrame: Exercises, Practice, Solution
- Conversion Tools
- JavaScript: HTML Form Validation
- SQL Exercises, Practice, Solution - SUBQUERIES
- C Programming Exercises, Practice, Solution : For Loop
- Python Exercises, Practice, Solution
- Python Data Type: List - Exercises, Practice, Solution
- C++ Basic: Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - exercises on Employee Database
- SQL Exercises, Practice, Solution - exercises on Movie Database
- SQL Exercises, Practice, Solution - exercises on Soccer Database
- C Programming Exercises, Practice, Solution : Recursion