21 lines
854 B
Markdown
21 lines
854 B
Markdown
|
---
|
||
|
|
title: Use Destructuring Assignment to Assign Variables from Objects
|
||
|
|
---
|
||
|
|
|
||
|
|
## Use Destructuring Assignment to Assign Variables from Objects
|
||
|
|
|
||
|
|
# This challenge requires some intuition about string objects in javascript.
|
||
|
|
|
||
|
|
When you create a string object it is based on the following <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/prototype">string prototype</a>.
|
||
|
|
|
||
|
|
Thus, each string has a length property; genericString = {length: 13}. (This is the only adopted property from the String.prototype.)
|
||
|
|
|
||
|
|
# Reassign properties using deconstruction.
|
||
|
|
```javascript
|
||
|
|
var basicOjb = {x: 40};
|
||
|
|
//To reassign 'get the value of the x property of basicObj and place its value into bigX' in ES6:
|
||
|
|
const { x: bigX } = basicOjb;
|
||
|
|
consle.log(bigX) // ans = 40
|
||
|
|
```
|
||
|
|
Place the value of the length property of 'str' into len.
|