scope.items = [];

scope.items=[];

scope.carList = [{value： Bmw，description： 它的bmw}，
{值： Mercedes，description： 其梅赛德斯}，
{值： Honda，描述： 其本田}];

scope.carList = [{ value: "Bmw", description: "Its bmw" }, { value: "Mercedes", description: "Its Mercedes" }, { value: "Honda", description: "Its Honda" }];

scope.select_item = 功能（键）{

scope.select_item = function (key) {