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爲什麼這個函數返回'No Contact'而不是'Akira'？hasOwnProperty沒有正確返回？
function lookUpProfile(firstName, prop){
for(i=0;i<contacts.length;i++){
if(contacts[i].hasOwnProperty.prop){
return firstName;
}
return 'no contact' ;
}
}
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"]
}
];
console.log(lookUpProfile("Akira", "likes"));
'如果（聯繫人[I] .hasOwnProperty（丙））' – James
因爲'hasOwnProperty'功能沒有所謂的屬性'道具'。 – melpomene