1.JAVA代码Editor自动补全
打开eclipse→Windows→Preferences→Java→Editor→Content Assist
修改Auto Activation triggers for java的值为：.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ
2.JavaScript代码Editor自动补全
打开JavaScript→Editor→Content Assist
修改Auto Activation triggers for JavaScript的值为：.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW
3.HTML代码Editor自动补全
继续打开web→html Files→Editor→Content Assist
修改Prompt when these characters are inserted:的值为：<=.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW
搞定,以后再eclipse编辑HTML代码是就方便了很多,也避免一些关键词的手写错误