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43 lines
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43 lines
1 KiB
Markdown
---
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date: 20201111
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id: 44e4d5c4-ea16-4417-a8e8-5036d3fdd370
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title: JavaScript Exceptions
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---
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# Introduction
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[JavaScript](20200613170905-javascript) supports exceptions.
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# Syntax
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``` javascript
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function promptDirection(question) {
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let result = prompt(question);
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if (result.toLowerCase() == "left") return "L";
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if (result.toLowerCase() == "right") return "R";
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throw new Error("Invalid direction: " + result);
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}
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function look() {
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if (promptDirection("Which way?") == "L") {
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return "a house";
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} else {
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return "two angry bears";
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}
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}
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try {
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console.log("You see", look());
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} catch (error) {
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console.log("Something went wrong: " + error);
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}
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```
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# See also
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- [Error Sub Types](20201111093101-javascript_error_sub_types)
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- [Custom Error Types](20201111093651-javascript_custom_error_types)
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- [Finally](20201111094033-javascript_exceptions_finally)
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- [JavaScript Error Handling](20200901105237-error_handling)
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- [JavaScript](20200613170905-javascript)
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- [JavaScript Catch Binding](20201116154444-javascript_catch_binding)
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