Currently, I am parsing through a considerable JSON file and handling key:value pairs within an object. The problem arises when I encounter a key that requires me to append another object to it, rather than simply overwriting it.
For instance:
var collection = {};
angular.forEach(items, function(item) {
collection[item.Id] = item.data;
//item.data is an object
});
After carefully considering the feedback I received from the initial post, I have reached a conclusion:
let myCollection = {};
angular.forEach(items, function(item) {
if(myCollection[item.Id]){
//If key exists, add to existing array
myCollection[item.Id].push(item.info);
}else{
//If key doesn't exist, create a new array for the object
myCollection[item.Id] = [item.info];
}
});
A more contemporary approach: perhaps this will be useful to someone
let items = {};
items.forEach(item => {
if(!items[item.id]){
items[item.id] = [];
}
items[item.id] = [...items[item.id], item.details];
// alternatively ------------------------------------
// add item at the beginning
// items[item.id] = [item.details, ...items[item.id]];
// or --------------------------------------------
// if you prefer not to change the reference every time
// items[item.id].push(item.details);
});
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