我有一个名为props的数组，其中包含n个带对象的数组，所有数组都可以包含不同数量的对象。
每个对象都有4个属性：participation_enabled，name，pathing_enabled，id这些属性可以在其他数组中为相同的属性ID具有不同的值。
我有两个目标：
1）找到其他对象数组中不同的所有对象属性，并将它们存储在另一个名为diffs的数组中;
2）找到在其他数组中无法找到的所有额外对象（唯一id）并将它们存储在另一个名为extra的数组中。
我的代码成功返回差异，但它不会返回所有额外的对象......
示例：
[
[
{participation_enabled:"false", name:"PropEins", pathing_enabled:"true", id:"prop1"},
{participation_enabled:"false", name:"User Status", pathing_enabled:"false", id:"prop2"},
{participation_enabled:"false", name:"Initial ID", pathing_enabled:"false", id:"prop3"},
{participation_enabled:"false", name:"User ID", pathing_enabled:"false", id:"prop4"},
{participation_enabled:"false", name:"Subdomain3", pathing_enabled:"false", id:"prop20"},
{participation_enabled:"false", name:"Subdomain4", pathing_enabled:"false", id:"prop21"},
{participation_enabled:"false", name:"Subdomain5", pathing_enabled:"false", id:"prop22"}
],
[
{participation_enabled:"false", name:"PropEins", pathing_enabled:"false", id:"prop1"},
{participation_enabled:"false", name:"Room", pathing_enabled:"false", id:"prop2"},
{participation_enabled:"false", name:"Subdomain", pathing_enabled:"false", id:"prop70"}
],
[
{participation_enabled:"true", name:"PropEins", pathing_enabled:"true", id:"prop1"},
{participation_enabled:"true", name:"User Status", pathing_enabled:"true", id:"prop2"},
{participation_enabled:"true", name:"Trackingcode", pathing_enabled:"true", id:"prop3"},
{participation_enabled:"false", name:"User ID", pathing_enabled:"true", id:"prop4"},
{participation_enabled:"false", name:"User ID2", pathing_enabled:"false", id:"prop50"}
]
]
对于此示例，diffs数组应包含：
[
{id:"prop1", participation_enabled:["false","true"], pathing_enabled:["false","true"], index:0},
{id:"prop2", participation_enabled:["false","true"], name:["User Status","Room"], participation_enabled:["false","true"], pathing_enabled:["false","true"], index:1},
{id:"prop3", participation_enabled:["false","true"], name:["Initial ID","Trackingcode"], participation_enabled:["false","true"], pathing_enabled:["false","true"], index:2},
{id:"prop4", pathing_enabled:["false","true"], index:3}
]
extra数组应为：
[
{participation_enabled:"false", name:"Subdomain3", pathing_enabled:"false", id:"prop20"},
{participation_enabled:"false", name:"Subdomain4", pathing_enabled:"false", id:"prop21"},
{participation_enabled:"false", name:"Subdomain5", pathing_enabled:"false", id:"prop22"},
{participation_enabled:"false", name:"Subdomain", pathing_enabled:"false", id:"prop70"},
{participation_enabled:"false", name:"User ID2", pathing_enabled:"false", id:"prop50"}
]
这是我的代码：
var diff = {};
var extra = [];
props.forEach(function(val, i){
if (i == 0) {
val.forEach(function(v1, ind){
diff[v1.id] = {};
diff[v1.id].index = [ind];
for (var key in v1) {
diff[v1.id][key] = [v1[key]];
}
});
}
else {
val.forEach(function(v1){
var id = v1.id;
for (var key in v1) {
if(diff[id]) {
diff[id][key].push(v1[key]);
}
}
if(!diff[id]) {
extra.push(v1);
}
});
}
});
for (var key in diff) {
var nested = diff[key];
var index = nested.index.pop();
for (nestedKey in nested) {
nested[nestedKey] = underscoreGS._filter(nested[nestedKey], function(item, pos) {
return nested[nestedKey].indexOf(item) == pos;
});
if (nested[nestedKey].length < 2) {delete nested[nestedKey];}
}
diff[key].id = key;
diff[key].index = index
if (underscoreGS._keys(diff[key]).length < 3) {delete diff[key];}
}
diff = underscoreGS._values(diff);
return [diff, extra];
答案 0 :(得分：0)
这是我实施和运作的解决方案：
var variable = [
[
{participation_enabled:"false", name:"PropEins", pathing_enabled:"true", id:"prop1"},
{participation_enabled:"false", name:"User Status", pathing_enabled:"false", id:"prop2"},
{participation_enabled:"false", name:"Initial ID", pathing_enabled:"false", id:"prop3"},
{participation_enabled:"false", name:"User ID", pathing_enabled:"false", id:"prop4"},
{participation_enabled:"false", name:"Subdomain3", pathing_enabled:"false", id:"prop20"},
{participation_enabled:"false", name:"Subdomain4", pathing_enabled:"false", id:"prop21"},
{participation_enabled:"false", name:"Subdomain5", pathing_enabled:"false", id:"prop22"}
],
[
{participation_enabled:"false", name:"PropEins", pathing_enabled:"false", id:"prop1"},
{participation_enabled:"false", name:"Room", pathing_enabled:"false", id:"prop2"},
{participation_enabled:"false", name:"Subdomain", pathing_enabled:"false", id:"prop70"}
],
[
{participation_enabled:"true", name:"PropEins", pathing_enabled:"true", id:"prop1"},
{participation_enabled:"true", name:"User Status", pathing_enabled:"true", id:"prop2"},
{participation_enabled:"true", name:"Trackingcode", pathing_enabled:"true", id:"prop3"},
{participation_enabled:"false", name:"User ID", pathing_enabled:"true", id:"prop4"},
{participation_enabled:"false", name:"User ID2", pathing_enabled:"false", id:"prop50"}
]
];
var diff = {};
var extra = [];
var ids = [];
var unique = [];
variable.forEach(function(val){
val.forEach(function(v1) {
ids.push(v1.id);
});
})
ids.filter(function(a){
if(ids.indexOf(a) == ids.lastIndexOf(a)) {
unique.push(a);
}
});
variable.forEach(function(val){
val.forEach(function(v1){
if(unique.indexOf(v1.id) >= 0) {
extra.push(v1);
}
});
});
variable.forEach(function(val, i){
if (i == 0) {
val.forEach(function(v1, ind){
diff[v1.id] = {};
diff[v1.id].index = [ind];
for (var key in v1) {
diff[v1.id][key] = [v1[key]];
}
});
}
else {
val.forEach(function(v1){
var id = v1.id;
for (var key in v1) {
if(diff[id]) {
diff[id][key].push(v1[key]);
}
}
});
}
});
for (var key in diff) {
var nested = diff[key];
var index = nested.index.pop();
for (nestedKey in nested) {
nested[nestedKey] = _.filter(nested[nestedKey], function(item, pos) {
return nested[nestedKey].indexOf(item) == pos;
});
if (nested[nestedKey].length < 2) {delete nested[nestedKey];}
}
diff[key].id = key;
diff[key].index = index
if (_.keys(diff[key]).length < 3) {delete diff[key];}
}
diff = _.values(diff);
console.log("extra:", extra);
console.log("diff:", diff);<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>