I have never done JavaScript, these days, because of special circumstances, you have to do one. This thought is very simple, but it is not easy to know the code. There is a following experience: 1. About the debugging tool to find the debug tool to pay some effort. But in fact, our system can be used with Microsoft's Scriprdebugger, just put the IE-> option -> Advanced -> Prohibition of script debugging. In addition, there is a better tool, called MSE, full name Microsoft Development Enviroment. But the installation is more troublesome, the method is to select the Office2000 to install, select the HTML editor in the Office tool. After being installed, you have to find MSE.exe you can use it. I feel that Microsoft seems to hold this East Tie. 2. Recommend the reference material is recommended than the page of others. Unclear, two books can be checked: "JavaScript and dhtml cookbook 2003", "JavaScript the definitive guide, 4th edition", online, Oreilly's quality can always trust. 3. Some of JavaScript and IE's JScript, JavaScript across platform Netscape, need to make special settings for different platforms. There is a special benefit with Mozilla, and the content written by Document.write () in IE is not seen. In Mozilla, you can see "check the selected partial source code" in the right-click menu. For debugging document.write () is particularly effective. Mozilla comes with a good debugging tool that can be used.