使用 JavaScript/AngularJS 将数组转换为对象
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Convert array to objects using JavaScript/AngularJS
提问by jureispro
I need convert arrays inside my parent array to objects to match my database model data.
我需要将父数组中的数组转换为对象以匹配我的数据库模型数据。
I have array like this:
我有这样的数组：
emails: Array[2]
0: "[email protected]"
1: "[email protected]"
id: 1
firstname: "Jane"
lastname: "Doe
What I want to achieve is to convert emails array to array of objects like this:
我想要实现的是将电子邮件数组转换为这样的对象数组：
emails: Array[2]
0:
{
name: "[email protected]"
}
1:
{
name: "[email protected]"
}
id: 1
firstname: "Jane"
lastname: "Doe
I tried to use this code to convert array to object but for some reason it fails (no data are displayed -> variable rv is empty):
我尝试使用此代码将数组转换为对象，但由于某种原因它失败了（没有显示数据 -> 变量 rv 为空）：
var rv = {};
for (var i = 0; i < dbInfo.emails.length; ++i)
if (dbInfo.emails[i] !== undefined) rv[i] = dbInfo.emails[i];
Does someone knows why my code fails and does someone knows solution for this type of problem?
有人知道我的代码为什么会失败，有人知道此类问题的解决方案吗？
Thanks advance.
先谢谢了。
回答by Alnitak
This is a perfect use for the Array.prototype.mapfunction:
这是该Array.prototype.map功能的完美使用：
dbInfo.emails = dbInfo.emails.map(function(e) {
return { name: e };
});
i.e. just convert each individual element of the array (e) into an object { name: email }
即只需将数组 ( e) 的每个单独元素转换为一个对象{ name: email }
回答by Vicruz
回答by forgivenson
You are putting the emails into an object. Instead, you want to wrap each email in its own object, and put it back in the array.
您正在将电子邮件放入一个对象中。相反，您希望将每封电子邮件包装在其自己的对象中，并将其放回数组中。
for (var i = 0; i < dbInfo.emails.length; ++i) {
if(dbInfo.emails[i] !== undefined) {
dbInfo.emails[i] = { name: dbInfo.emails[i] };
}
}
回答by Noman
this work perfectly //Option Select
这项工作完美//选项选择
var range = [];
for (var i=1; i<$scope.totalItems+1; i++) {
range.push({value:i});
}
console.log(range);
