我有一个对象数组，希望数组中的每个对象都有相同的键.
var obj1 = {"type": "test", "info": "a lot", "value": 7};
var obj2 = {"value": 5};
var obj3 = {"context": "demo", "info": "very long", "value": 3};
var obj4 = {"info": "no way"};
var dataSet = [obj1,obj2,obj3,obj4];
我的try 是在第一步创建一个包含所有可能键的array.
keys.forEach(function(a,b){
dataSet.forEach(function(c,d){
//key not found
if(a in c === false)
{
//add key to object
dataSet[b][a] = false;
}
});
});
然而，它似乎不能正常工作.
after logic: [
{
"type": false,
"info": "a lot",
"value": 7
},
{
"value": 5,
"info": false
},
{
"context": "demo",
"info": "very long",
"value": false
},
{
"info": "no way",
"context": false
}
]
我错过了什么？
var obj1 = {"type": "test", "info": "a lot", "value": 7};
var obj2 = {"value": 5};
var obj3 = {"context": "demo", "info": "very long", "value": 3};
var obj4 = {"info": "no way"};
var dataSet = [obj1,obj2,obj3,obj4];
var keys = [];
console.log("before logic: ", dataSet);
//Step 1: Fill keys array
dataSet.forEach(function(a,b){
Object.keys(a).forEach(function(c,d)
{
//add keys to array if not already exists
if(!keys.includes(c))
{
keys.push(c);
}
});
});
//Step2: loop through keys array and add key to object if not existing
keys.forEach(function(a,b){
dataSet.forEach(function(c,d){
//key not found
if(a in c === false)
{
//add key to object
dataSet[b][a] = false;
}
});
});
console.log("after logic: ", dataSet);EDIT:
如果 keys 也总是按同样的顺序排序，那就太完美了.