[英]How flatten object literal properties?
我有一个由旧版服务器返回的对象,我想通过JavaScript,jQuery甚至Underscore.js在客户端更改结构。
下面是我的原始对象的样子:
[
{
"Id":{
"LValue":1,
"Value":1
},
"Date":{
"LValue":"2013-10-17T00:00:00",
"Value":"2013-10-24T00:00:00"
},
"User":{
"LValue":508,
"Value":507
},
"Comments":{
"LValue":"This a test load",
"Value":"This a test"
},
"Name":"John Doe",
"IsDeleted":false
}
]
不过,在客户端,我想将其展平以获取“值”并将“ LValues”填充到单独的属性中,因此以后不再需要时不要松开它们:
[
{
"Id":1,
"Date":"2013-10-24T00:00:00",
"User":507,
"Comments":"This a test",
"Name":"John Doe",
"IsDeleted":false,
"LValues": {
"Id":1,
"Date":"2013-10-17T00:00:00",
"User":508,
"Comments":"This a test load"
}
}
]
这将使使用该对象变得更加容易,任何帮助将不胜感激!
您可以为此使用基本的Javascript映射。 假设硬编码属性:
var flattenedItems = items.map(function(x) {
return {
Id: x.Id.Value,
Date: x.Date.Value,
User: x.User.Value,
Comments: x.Comments.Value,
Name: x.Name,
IsDeleted: x.IsDeleted,
LValues: {
Id: x.Id.LValue,
Date: x.Date.LValue,
User: x.User.LValue,
Comments: x.Comments.LValue,
}
};
});
如果属性是可变的,则可以在map
迭代器中对其进行迭代:
var flattenedItems = items.map(function(x) {
var flattened = { LValues: {} };
for (var prop in x) {
flattened[prop] = x[prop].Value;
flattened.LValues[prop] = x[prop].LValue;
};
return flattened;
});
var oList = [
{
"Id":{
"LValue":1,
"Value":1
},
"Date":{
"LValue":"2013-10-17T00:00:00",
"Value":"2013-10-24T00:00:00"
},
"User":{
"LValue":508,
"Value":507
},
"Comments":{
"LValue":"This a test load",
"Value":"This a test"
},
"Name":"John Doe",
"IsDeleted":false
}
];
var newFormat = _(oList).map(function(o) {
var flattened = { LValues: {} };
_(o).each(function(val, propName) {
flattened[propName] = val.Value ? val.Value : val;
if(val.LValue) {
flattened.LValues[propName] = val.LValue;
}
});
return flattened;
}
你可以用
var items = [
{
"Id":{
"LValue":1,
"Value":1
},
// ...
}
];
items = items[0];
var obj = {LValues: {}};
for(var i in items) {
if(typeof items[i] === 'object') {
obj[i] = items[i].Value;
obj.LValues[i] = items[i].LValue;
} else {
obj[i] = items[i];
}
}
我相信输出实际上是写一个简单的函数
function flatten(obj){
var r = {};
if(obj){
console.log(obj);
r.Id = obj.Id.Value;
r.Date = obj.Date.Value;
r.User = obj.User.Value;
r.Comments = obj.Comments.Value;
r.Name = obj.Name.Value;
r.IsDeleted = obj.IsDeleted;
r.LValues = {};
r.LValues.Id = obj.Id.LValue;
r.LValues.Date = obj.Date.LValue;
r.LValues.User = obj.User.LValue;
r.LValues.Comments = obj.Comments.LValue;
}
return r;
}
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