Javascript 自动提示：JavaScript→Editor→Content Assist 

                                  修改Auto Activation triggers for javaScript的值为：zjs  点击apply按钮

Html 自动提示：         web→html Files→Editor→Content Assist  

                                  修改Prompt when these characters are inserted:的值为：zhtml  点击apply按钮

导出Perferences！

再查找 zjs  然后将其值改为 .abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW

再查找 zhtml  然后将其值改为 <=.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW

再把Perferences导进去就OK了