Question

Which property is used to manage multiple event handlers? (a) onmessage (b) onerror (c) both onmessage and onerror (d) postmessage I had been asked this question during an internship interview. The origin of the question is Web Workers topic in section Caching, Debugging and Animation of JavaScript Select the correct answer from above options JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Right answer is (c) both onmessage and onerror The best I can explain: message event is fired when the worker’s parent receives a message from its worker which is also available via the onmessage property. You can use onmessage and onerror properties if you want to manage multiple event handlers.