How do I debug JavaScript in Safari？_how to debug in safari-优快云博客

本文介绍了如何在Safari浏览器中启用和使用JavaScript调试功能，包括显示错误日志及使用控制台窗口。适用于Safari 1.3及以上版本。

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from http://developer.apple.com/internet/safari/faq.html

14. How do I debug JavaScript in Safari?

Safari's "Debug" menu allows you to turn on the logging of JavaScript errors. To display the debug menu, open a Terminal window and type:

	
	defaults write com.apple.Safari IncludeDebugMenu 1

Now relaunch Safari and check the "Log JavaScript Exceptions" menu item in the Debug menu. In Safari 1.3 and above, select the "Show JavaScript Console" menu item and the JavaScript Console window will open to display JavaScript exceptions. For Safari versions before 1.3, JavaScript exceptions will appear in the Console application (/Applications/Utilities/Console).

Safari 1.3 and above supports explicit logging of arbitrary information - similar to Objective-C NSLog() - function by using window.console.log() in your JavaScript. All messages are routed to the JavaScript Console window and show up nicely in a dark green, to easily differentiate themselves from JavaScript exceptions.

	
	if(window.console) {
		window.console.log("I think therefore I code!");
	} 
	else {
		alert("I think therefore I code!");
	}

Using Safari 1.3 or above? Open the JavaScript Console and click to see it in action!