I have information that appears as follows:
[{"letter": "a", "word" : "apple"}, {"letter": "b", "word":"ball"}, {"letter": "a", "word":"alpha"}, {"letter": "c", "word":"cat"}]
My goal is to convert it into:
{"a":["apple", "alpha"], "b": ["ball"], "c":["cat"]}
If you're looking to achieve this, utilizing a reduce function is the way to go.
const items = [{"letter": "a", "word" : "apple"}, {"letter": "b", "word":"ball"}, {"letter": "a", "word":"alpha"}, {"letter": "c", "word":"cat"}]
const modified = items.reduce((accumulator, current) => {
accumulator[current.letter] = accumulator[current.letter] || [];
accumulator[current.letter].push(current.word);
return accumulator;
}, {});
console.log(modified);
Is this the kind of thing you're looking for?
let list = [{"letter": "x", "word" : "xylophone"}, {"letter": "y", "word":"yellow"}, {"letter": "z", "word":"zebra"}, {"letter": "x", "word":"x-ray"}];
let result = {};
for (let item of list)
(result[item.letter] = result[item.letter] || []).push(item.word);
console.log(result)After analyzing the new data, here is the method I will use:
let items = [{"letter": "a", "word" : "apple"}, {"letter": "b", "word":"ball"}, {"letter": "a", "word":"alpha"}, {"letter": "c", "word":"cat"}]
let result = {}
items.forEach(function(item){
let key = item['letter']
let value = item['word']
if(result[key]){
result[key] = [...result[key], value];
}else{
result[key] = [value];
}
})
console.log(result);
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