Javascript 如何让firefox报告javascript错误？
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How to make firefox report the javascript error?
提问by Bin Chen
I am developing with Firefox and Firebug, but in my environment if the js has the syntax error, the firefox will not report any error, it just stops there.
我是用 Firefox 和 Firebug 开发的，但是在我的环境中，如果 js 出现语法错误，firefox 不会报告任何错误，它只是停在那里。
Then I have to use IE to reload the page, IE will report the error at the bottom left corner, and after clicking it I can see the line number of the js error.
然后就得用IE重新加载页面，IE会在左下角报错，点击后可以看到js错误的行号。
I am wondering if I misconfigured something? I think at least firebug should report the error as IE does. But firebug displayed nothing.
我想知道我是否配置错误？我认为至少 firebug 应该像 IE 一样报告错误。但萤火虫什么也没显示。
The example code(show error in IE but normal in FF):
示例代码（在 IE 中显示错误但在 FF 中正常）：
<!DOCTYPE html>
<html>
<head>
<style>
body { color:blue; }
</style>
<script src="http://code.jquery.com/jquery-1.4.4.js"></script>
</head>
<body>
<script>
if (a < ) 0 {
}
</script>
</body>
</html>
采纳答案by jmort253
To configure Firebug to show errors, do the following:
要将 Firebug 配置为显示错误，请执行以下操作：
- Click the arrow on the Console tab.
- Make sure it's Enabled.
- Make sure "Show JavaScript Errors" is checked.
- 单击控制台选项卡上的箭头。
- 确保它已启用。
- 确保选中“显示 JavaScript 错误”。
You should see the errors in the console now, and it should show you the line number and filename.
您现在应该会在控制台中看到错误，并且应该会显示行号和文件名。
I am using Firefox 3.6 and Firebug 1.5.0.
我使用的是 Firefox 3.6 和 Firebug 1.5.0。
UPDATE:This same process also works in the latest Firefox Nightly 19.0a1, using Firebug 1.10.4. Thus, these instructions are still up to date.
更新：同样的过程也适用于最新的 Firefox Nightly 19.0a1，使用 Firebug 1.10.4。因此，这些说明仍然是最新的。
回答by xiaowl
I think you may enable the 'Script' option. With this option on, while a js error occurs, firefox stops caused by the breakpoint of js source where error occurs.
我认为您可以启用“脚本”选项。开启此选项，当发生js错误时，firefox会因发生错误的js源断点而停止。
