如何在javascript中将所有属性破坏为本地let

Question

say i have a object :

const ob = { a : 1, b : 'hello world', c : 3, d : false, e : { zn : 'nested value' }};

I want a one liner, preferably using destructing to grab 5 new variables in local scope.

//do something with ob
//now i want to have 5 const/let defined in local scope
// such as, a =1, b = 'hello world', c = 3, d = false, e = { zn : 'nested value' }

EDIT1 : i have long key properties and there is 10 properties that i want to use all of them, directly without any dot, and i find writing 10 lengthy variable names boring..

Answer 1

It is as simple as wrapping your desired identifiers in an object-style syntax

const {a, b, c, d, e} = {a: 1, b: 'hello world', c: 3, d: false, e: {zn: 'nested value'}};
a; // 1
b; // "hello world"
// etc

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Note you can also go into arrays or go deeper into nests if needed;

const [{f: {g}}] = [{f: {g: 1}}];
f; // undefined
g; // 1

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Further, you can rename identifiers during destructring

const {old: now} = {old: 1};
old; // undefined
now; // 1

Answer 2

Well if you want to shorten and assign them to a variable, one way is to use eval.

But then again, why do you need to create them as variables?

 const ob = { a : 1, b : 'hello world', c : 3, d : false, e : { zn : 'nested value' }}; var i = 0; for (let key in ob) { eval(`var index${i} = "${ob[key]}"`); i++; } console.log(index0); console.log(index1); console.log(index2);