[英]Destructuring Nested objects in javascript | Destructure second level parent and child Objects
I need to destructure and get values of title, child, childTitle from this object我需要从这个对象中解构并获取 title、child、childTitle 的值
const obj1 = {
title : 'foo',
child : {
title2 : 'bar'
}
}
let {title, child} = obj1;
console.log(title) //'foo'
console.log(child) //{ title : 'bar' }
// but couldn't get child object this way
let { title , child : { title2 } } = obj1;
console.log(title) //'foo'
console.log(child) //unDefined
console.log(title2) //'bar'
How could I get the child object?我怎么能得到子对象?
child: { title2 }
is just destructuring the child property. child: { title2 }
只是在破坏 child 属性。 If you want to pick up the child property itself simply specify it in the statement: let { title, child, child: { title2 } } = obj1;
如果您想获取 child 属性本身,只需在语句中指定它:
let { title, child, child: { title2 } } = obj1;
const obj1 = { title: 'foo', child: { title2: 'bar' } } let { title, child, child: { title2 } } = obj1; console.log(title); console.log(child); console.log(title2);
When doing child : { child : { title2 } }
, child
is not instantiate, so you can still doing { child, child : { title2 } }
to get both title2
and child
.执行 child :
{ child : { title2 } }
, child
不会实例化,因此您仍然可以执行{ child, child : { title2 } }
来同时获取title2
和child
。
As simple as :就像这样简单:
const obj1 = {
title: "foo",
child: {
title2: "bar"
}
};
const { title, child, child : { title2 } } = obj1
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