[英]Object property assignment with destructuring?
I'd like to use ES6 destructuring to assign properties of an object, but can't figure out the syntax. 我想使用ES6解构来分配对象的属性,但无法弄清楚语法。
<= ES5: <= ES5:
var dst = {}; // already in existence, with its own props, methods, etc.
var src = { a: 'foo', b: 'bar', c: 'baz' };
dst.a = src.a;
dst.b = src.b;
>= ES6 (my own made-up, not-working syntax): > = ES6(我自己编写的,不工作的语法):
let dst = {};
let src = { a: 'foo', b: 'bar', c: 'baz' };
dst[{a, b}] = src;
Is it possible to use destructuring assignment onto an object? 是否可以在对象上使用解构赋值? What's the correct syntax?
什么是正确的语法?
EDIT: In my use case, dst
is an object that existed well before needing to merge a subset of src
's properties; 编辑:在我的用例中,
dst
是一个在需要合并src
属性子集之前就已存在的对象; it is not a new Object created solely to 'borrow' from src
. 它不是一个专门为
src
“借用”而创建的新对象。
我想你将不得不重复dst
:
({a: dst.a, b: dst.b} = src);
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