Having the initial object of this shape:

const initial = { a: 'a', b: 'b', c: 'c', d: 'd', ..., z: 'z' };

The result should contain all properties but without 'b' for example. I know there is a method like

const result = (({ a, b, c, d, ..., z }) => ({ a, c, d, ..., z }))(initial)

but in the case of an object with too many properties it's too much code.

Is there a shorter way to do that?

CodePudding user response：

Clone the object and delete the property:

const result = {...initial};
delete result.b;

CodePudding user response：

Use Object.entries() to convert the object to an array. Use filter() to skip that element of the array. Use Object.fromEntries() to convert that result back to an object.

const result = Object.fromEntries(Object.entries(initial).filter(([key, value]) => key != 'b'))

You can also use destructuring. List all the properties you want to remove explicitly in the destructuring target, then combine the rest into a new object with ....

const initial = { a: 'a', b: 'b', c: 'c', d: 'd', z: 'z' };
const {b, ...result} = initial;
console.log(result);

CodePudding user response：

You can copy the object, then delete a key:

const initial = { a: 'a', b: 'b', c: 'c', d: 'd', ..., z: 'z' };
const result = {...initial}; // copy the array
delete result.b;