https://blog.csdn.net/qq_36047372/article/details/73331304
3.继续打开web→html Files→Editor→Content Assist
修改Prompt when these characters are inserted:的值为：<=.abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVW 点击apply按钮