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destructuring an array in ES6 rest (#19424)

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* destructuring an array in ES6 rest

* fix: added const on line 56
This commit is contained in:
Ragunathan Maniraj
2018-10-16 09:21:09 +05:30
committed by Randell Dawson
parent 44641ab13a
commit c7ce87090f
1 changed files with 8 additions and 1 deletions
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client/src/pages/guide/english/javascript/es6/destructuring/index.md
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@ -53,7 +53,7 @@ console.log(firstName, lastName); // undefined undefined
You can still achieve the desired result using the following syntax. You can still achieve the desired result using the following syntax.
```js ```js
const obj = {propertyName: value} const obj = {propertyName: value}
{propertyName: desiredVariableName} = obj const {propertyName: desiredVariableName} = obj
``` ```
Our previous example would be rewritten as follows: Our previous example would be rewritten as follows:
@ -63,3 +63,10 @@ const {first: firstName, last: lastName} = fullName;
console.log(firstName, lastName); // John Smith console.log(firstName, lastName); // John Smith
``` ```
**Array Destructuring with rest**
When destructuring an array, you can unpack and assign the remaining part of it to a variable using the rest pattern:
```js
const [a, ...b] = [1, 2, 3];
console.log(a); // 1
console.log(b); // [2, 3]
```