1、获取url参数、get参数

function getQueryVariable(variable)
{
       var query = window.location.search.substring(1);
       var vars = query.split("&");
       for (var i=0;i<vars.length;i++) {
               var pair = vars[i].split("=");
               if(pair[0] == variable){return pair[1];}
       }
       return(false);
}

2、搜索结果变色

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>');