February 2008
Beginner
416 pages
9h 53m
English
Content preview from JavaScript Step by StepBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 16. JavaScript Error Handling
After reading this chapter, you'll be able to
Understand error handling using JavaScript methods.
Handle errors using try/catch statements.
Use try/catch/finally statements.
Handle the onerror event for window and image objects.
An Overview of Error Handling
This chapter looks at two primary, built-in ways of handling error conditions in JavaScript. The try/catch statement pair is available in JavaScript. Many languages, such as Microsoft Visual Basic .NET, include this pair of keywords that help the programmer handle error conditions within their code.
Along with try/catch, JavaScript offers the onerror event, which gives the programmer another tool to perform an action when encountering an error.
Using try/catch ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.