var val = 'abcdef';
var searchText = 'c';
var regExp = new RegExp(searchText, 'g');
var newval = val.replace(regExp, '<a style="color:red" >'+searchText+'</a>');
则newval就是替换后关键词高亮的内容
val 是 abcde
newval 是abcde
var val = 'abcdef';
var searchText = 'c';
var regExp = new RegExp(searchText, 'g');
var newval = val.replace(regExp, '<a style="color:red" >'+searchText+'</a>');
则newval就是替换后关键词高亮的内容
val 是 abcde
newval 是abcde