Simple implementation of obtaining parameters in url through regular expressions

url：

?name=charm&id=123

In js:

var name = getUrlParam("name");

/*Get parameters in url through regular
function getUrlParam(name){
   var reg = new RegExp("(^|&amp;)"+ name +"=([^&amp;]*)(&amp;|$)");
   var r = (1).match(reg);
   if(r!=null)return decodeURI(r[2]); return null;
}

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