我認爲下面的代碼是正確的:嵌套循環在JavaScript
函數應該檢查是否是的firstName一個實際接觸的firstName和給定屬性(丙)是接觸的一個屬性。
如果兩者均爲真,則返回該屬性的「值」。
使用參數「Kristian」和「lastName」對函數lookUpProfile的調用應返回值「Vos」,但不是。
一些想法在哪裏錯了?
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 lookUpProfile(firstName, prop){
for(var i=0;i<contacts.length;i++){
for(var j=0;j<contacts[i].length;j++){
if(contacts[i][0]===firstName && contacts[i][j].hasOwnProperty(prop)){
return contacts[i][j];
}
}
}
}
// Change these values to test your function
lookUpProfile("Kristian", "lastName");
'爲(VAR J = 0; j
Scimonster