I have following nested configuration object, and I want to get the value of key1, which means I want to return "value1", key1 is static, but randomGeneratedNumber and randomGeneratedName are dynamic from database.
configuration:{
randomGeneratedNumber:
{
randomGeneratedName:
{
key1: value1,
key2: value2
}
}
}
If you know you have (at least) one key at each level, you can do it with a helper function and composition:
var obj = {
configuration: {
randomGeneratedNumber: {
randomGeneratedName: {
key1: 'value1',
key2: 'value2'
}
}
}
};
function firstValue(a) {
return a[Object.keys(a)[0]];
}
console.log(firstValue(firstValue(obj.configuration)).key1);Or if you have a dynamic (but known) depth, you can do it with recursion:
var obj = {
configuration: {
randomGeneratedNumber: {
randomGeneratedName: {
key1: 'value1',
key2: 'value2'
}
}
}
};
function firstValueDeep(a, depth) {
var keys = Object.keys(a);
if (+depth <= 0 || !keys.length) {
return a;
} else {
return firstValueDeep(a[keys[0]], depth - 1);
}
}
console.log(firstValueDeep(obj.configuration, 2).key1);Beyond that, you'll want to look into graph traversal algorithms, like depth-first-search or breadth-first-search, to find some object having 'key1' as a property.
Dynamically you can do this.. i'm hoping this helps or gives you an head way towards the problem. :)
var config = {configuration:{
randomGeneratedNumber:
{
randomGeneratedName:
{
key1: "value1",
key2: "value2"
}
}
}};
let configKeys = Object.keys(config.configuration);
configKeys.forEach((rand)=>{
console.log(rand);
var itemKeys = Object.keys(config.configuration[rand]);
console.log(itemKeys);
for(var i=0;i<itemKeys.length;i++){
let randName = itemKeys[i];
console.log(config.configuration[rand][randName]['key1']);
console.log(config.configuration[rand][randName]['key2']);
}
});If I understand the question, I would just do something like this:
let value;
for (let nestedOuter of Object.values(something.configuration))
for (let nestedInner of Object.values((nestedOuter)))
value = nestedInner.key1;
console.log(value);
If you need the randomly generated values, you'll need to do Object.entries instead to pull out both key and value.
