滴滴前端笔试题

	
	

		
		

			
			

				let parseQueryString = function (url, key) {
			

			

				//请在此处编写你的代码，其他部分请勿修改，否则不记分。
			

			

				//begin
			

			

				    var pos = url.indexOf(key + "=");
			

			

				    var result = '';
			

			

				    if (url[pos + key.length] != '=') { //判断key的值为空
			

			

				        res = '';
			

			

				        return res;
			

			

				    }
			

			

				    for (let i = pos + key.length + 1; i < url.length; i++) {
			

			

				        result += url[i];
			

			

				    }
			

			

				    var poS = result.indexOf('&');
			

			

				    var res = result;
			

			

				    if (poS != -1) {
			

			

				        res = result.slice(0, poS);
			

			

				    }
			

			

				    return res;
			

			

				//end
			

			

				// 以下代码请勿修改
			

			

				}
			

			

				const _ret = eval(read_line());
			

			

				print(_ret === "" ? "_EMPTY_" : _ret);