实现文本框自动查询的功能，例如goolge的自动显示你所输入的内容是否与后台的匹配。-The realization of the text box automatically query functions, such as Google automatically displays the contents of your input with the background of the match.

实现了文本软件的编辑功能，并且能通过高亮字体显示需要查询的字符-Text software editing features, and through the character of the highlighted font query