html页面跳转传递参数

https://www.jianshu.com/p/aa618ddfdb42

function getParams(key) {
var reg = new RegExp("(^|&)" + key + "=([^&]*)(&|$)");
var r = window.location.search.substr(1).match(reg);
if (r != null) {
return unescape(r[2]);
}
return null;
};