我有一个循环,我想为前端编译一个对象。
循环设置一个用户、小时和时间戳变量,我想从中动态创建新对象。
这是我到目前为止所拥有的,但它不起作用,因为它显然只是替换了用户。任何帮助都是最好的解决方案,谢谢。
var Things = { /* big dump of data */ };
var usersHours = {};
for (var i = Things.length - 1; i >= 0; i--) {
var user = Things[i].user;
var hours = Things[i].hours;
var timeStamp = Things[i].timeStamp;
var hoursAdd = {};
hoursAdd[timeStamp] = hours;
usersHours[user] = hoursAdd;
};
// example of wanted final output
var usersHours = {
user1 : {
1406178757855 : 10:00,
1406178743473 : 04:00,
1406178759600 : 04:44
},
user2 : {
1406178475847 : 01:30,
1406193847384 : 07:00,
1406984783487 : 08:44
},
user3 : {
1406173847787 : 01:40,
1406139847873 : 07:14,
1406183748374 : 08:34
}
}
最佳答案
因此,您可以测试用户是否已经拥有数据,以及他们是否没有创建一个空白对象准备好除了添加的新数据。在下面的示例中,如果同一用户的任何时间戳相同,则数据将被覆盖。
Things = [{
user: "user1",
hours: "5",
timestamp: "12312312322"
}, {
user: "user1",
hours: "2",
timestamp: "12322312322"
}, {
user: "user1",
hours: "1",
timestamp: "12312392322"
}, {
user: "user2",
hours: "5",
timestamp: "12312312322"
}, {
user: "user2",
hours: "2",
timestamp: "12322312322"
}, {
user: "user2",
hours: "1",
timestamp: "12312319322"
}, {
user: "user3",
hours: "5",
timestamp: "12312312322"
}, {
user: "user3",
hours: "2",
timestamp: "12322312522"
}, {
user: "user3",
hours: "1",
timestamp: "123123222322"
},
]
var usersHours = {};
for (var i = Things.length - 1; i >= 0; i--) {
var user = Things[i].user;
var hours = Things[i].hours;
var timeStamp = Things[i].timestamp;
//test if user has already got data
if (!usersHours[user]) {
usersHours[user] = {};
}
//set/or possibly override a timestamp for the user with the hours
usersHours[user][timeStamp] = hours;
};
console.log(usersHours);
关于Javascript - 将多个动态值添加到 for 循环中的动态键,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26836568/