url提取query string

 1 function parseUrl(urlStr){
 2         urlStr=decodeURIComponent(urlStr);
 3         var keyPattern=/[^=&]+(?==)/gi,//匹配key
 4             valuePattern=/[^&=]+(?=&|$)/gi;//匹配value
 5         var keyArr=urlStr.match(keyPattern),//获取key数组
 6             valueArr=urlStr.match(valuePattern);//获取value数组
 7         var urlObj={};
 8         for(var i=0,len=keyArr.length;i<len;i++){
 9             urlObj[keyArr[i]]=valueArr[i];//给返回的数组赋值
10         }
11         return urlObj;
12     }
13     console.log(parseUrl("name=刘&job=%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91"));