如何在数组 javascript 中获得具有我想要的值的 object

Question

I have an array with the following structure:

balance = [
    {id: 2, is_selected: true},
    {id: 4, is_selected: true},
    {id: 15, is_selected: false},
    {id: 137, is_selected: false},
    {id: 30, is_selected: false}
];

How do I get object like so:

selected = {2: true, 4: true, 15: false, 137: false, 30: false};

Thank you.

Answer 1

Use Array.map to transform your initial structure into key-value pairs and then convert those into an object with Object.fromEntries :

 const balance = [ {id: 2, is_selected: true}, {id: 4, is_selected: true}, {id: 15, is_selected: false}, {id: 137, is_selected: false}, {id: 30, is_selected: false} ]; const selected = Object.fromEntries(balance.map(({id,is_selected})=>([[id],is_selected]))) console.log(res)