无法通过呢

//初始化变量 var contacts = [ { "firstName": "Akira", "lastName": "Laine", "number": "0543236543", "likes": ["Pizza", "Coding", "Brownie Points"] }, { "firstName": "Harry", "lastName": "Potter", "number": "0994372684", "likes": ["Hogwarts", "Magic", "Hagrid"] }, { "firstName": "Sherlock", "lastName": "Holmes", "number": "0487345643", "likes": ["Intriguing Cases", "Violin"] }, { "firstName": "Kristian", "lastName": "Vos", "number": "unknown", "likes": ["Javascript", "Gaming", "Foxes"] } ];

function lookUp(firstName, prop){ // 请把你的代码写在这条注释以下 var result; if(contacts.hasOwnProperty(["fristName"])===true){ for(var a=0;a<contacts.length;a++){ result = contacts[a]["firstName"]; if (firstName === result){ if (contacts[a].hasOwnProperty(prop)===true){ return contacts[a][prop]; }else{ return "No such property"; } }else{ return "No such contact"; } } } } // 你可以修改这一行来测试你的代码 lookUp("Akira", "likes");