问题遇到的现象和发生背景
想知道代码错在哪里,是访问对象属性方式错了还是啥啊(修改代码那段)
问题相关代码,请勿粘贴截图
// 设置
const recordCollection = {
2548: {
albumTitle: 'Slippery When Wet',
artist: 'Bon Jovi',
tracks: ['Let It Rock', 'You Give Love a Bad Name']
},
2468: {
albumTitle: '1999',
artist: 'Prince',
tracks: ['1999', 'Little Red Corvette']
},
1245: {
artist: 'Robert Palmer',
tracks: []
},
5439: {
albumTitle: 'ABBA Gold'
}
};
// 只修改这一行下面的代码
function updateRecords(records, id, prop, value) {
if(prop=="albumTitle"||prop=="artist"){
records[id][prop]=value;
}
else{
if(!records[id].hasOwnProperty(prop)){
records[id][prop] = [value];
}
else if(value != ""){
records[id][prop].push(value);
}
else{
delete records[id][prop];
}
}
}
updateRecords(recordCollection, 5439, 'artist', 'ABBA');