运行结果如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>通过正则获取url参数篇</title>
</head>
<body>
<script type="text/javascript">
/*方法1：通过正则获取url参数*/
function getQuery(key) {
var reg = new RegExp(key + '=([^&]+)(?=(?:&|$))');
var result = location.search.match(reg);
return result ? decodeURIComponent(result[1]) : result;
}
/*方法2*/
var getStateParams = (function() {
var sSeach = location.search.split('?')[1];
var json = {};
if (sSeach) {
var arr = sSeach.split('&');
for (var i = 0; i < arr.length; i++) {
var aTmp = arr[i].split('=');
json[aTmp[0]] = aTmp[1];
}
}
return json;
})();
console.log('getStateParams', getStateParams);
console.log('getQuery', getQuery('rid'));
</script>
</body>
</html>