2

I have the following array:

const x = [
    {event: "oninput", action: ""},
    {event: "onfocus", action: ""}
]

Following is the desired output:

// event: action
{
    oninput: "",
    onfocus: ""
}

I tried the following which didn't really work:

const x = [
    {event: "oninput", action: ""},
    {event: "onfocus", action: ""}
]

console.log({...x.map(y => {return {[y.event]: y.action}})})

2
  • 3
    Possible duplicate of Convert Array to Object Commented Jan 11, 2019 at 8:05
  • 1
    .map returns an array, spreading it into an object will result in numeric-indexed properties. Commented Jan 11, 2019 at 8:08

3 Answers 3

6

You could use Object.assign and map the objects. This collects all objects and assign it to a single object.

const x = [
    { event: "oninput", action: "" },
    { event: "onfocus", action: "" }
];

console.log(Object.assign(...x.map(({ event, action }) => ({ [event]: action }))));

Sign up to request clarification or add additional context in comments.

Comments

0

You can use reduce to build a new object. It also gives compatibility back to ECMAScript 2011:

var x = [
    {event: "oninput", action: ""},
    {event: "onfocus", action: ""}
];

var o = x.reduce((acc, obj) => {acc[obj.event] = obj.action; return acc}, {});

console.log(o);

Comments

0

Different approach:

const x = [
    {event: "oninput", action: ""},
    {event: "onfocus", action: ""}
]
let newObj = {}
x.forEach(obj => {
    newObj[obj.event] = obj.action
})


console.log(newObj)
// returns { oninput: '', onfocus: '' }

Comments

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Start asking to get answers

Find the answer to your question by asking.

Ask question

Explore related questions

See similar questions with these tags.