销毁嵌套对象：如何获得父级及其子级值？

第一个解构仅创建

Start

End

current

function ({ current: { selectionStart: Start, selectionEnd: End }, current }, AppStateSetter) {// do something with current , Start , and End}

您可以在Babel编译器上对其进行测试：

这段代码：

const object = {  current: {    selectionStart: "prop 1",    selectionEnd: "prop2"  }}const { current: { selectionStart: Start, selectionEnd: End } } = object;

被转移到：

var object = {  current: {    selectionStart: "prop 1",    selectionEnd: "prop2"  }};var _object$current = object.current,    Start = _object$current.selectionStart,    End = _object$current.selectionEnd;

如您所见，

current