Implement the ensure function so that it throws an error if called without arguments or the argument is undefined. Otherwise it should return the given value.
- No argument throws an error: Wrong answer
- Truthy argument returns argument: Wrong answer
- Falsy argument is treated differently from undefined: Wrong answer
Tags
JavaScriptScore Distribution
0-33% | |
---|---|
34-66% | |
67-100% |
Would you like to see our other questions?
We have 850+ premium hand-crafted questions for 50+ job skills and 15+ coding languages. We prefer questions with small samples of actual work over academic problems or brain teasers.
Visit our question libraryPrivate Concierge
Send us an email with an explanation of your testing needs and a list of candidates. We will create an appropriate test, invite your candidates, review their results, and send you a detailed report.
Contact Private ConciergeWould you like to see our tests? The following tests contain JavaScript related questions:

HTML/CSS and JavaScript Online Test
HTML/CSS, JavaScript, and Bootstrap Online Test
HTML/CSS, JavaScript, and React Online Test
HTML/CSS, JavaScript, C# Algorithms, and SQL Online Test
HTML/CSS, JavaScript, C#, and SQL Online Test
HTML/CSS, JavaScript, Java Algorithms, and SQL Online Test
HTML/CSS, JavaScript, Java, and SQL Online Test
HTML/CSS, JavaScript, Node.js, and SQL Online Test
HTML/CSS, JavaScript, PHP, and SQL Online Test
HTML/CSS, JavaScript, Python Algorithms, and SQL Online Test
HTML/CSS, JavaScript, Python, and SQL Online Test
HTML/CSS, JavaScript, Ruby, and SQL Online Test
On the TestDome Blog
Screening Applicants: The Good, the Bad and the Ugly
Since we’re all biased and we use incorrect proxies, why not just outsource hiring to experts or recruitment agencies? After all, they’ve been screening people for many years, so they must know how to do it right?
Not really. I was surprised to discover that many experts disagree with each other. Everybody praises their pet method and criticizes the others. Many of these methods look legitimate, but are based on...