65 lines
1.3 KiB
Markdown
65 lines
1.3 KiB
Markdown
|
---
|
||
|
|
id: 587d7b8b367417b2b2512b53
|
||
|
|
title: Use class Syntax to Define a Constructor Function
|
||
|
|
challengeType: 1
|
||
|
|
videoUrl: ''
|
||
|
|
localeTitle: ''
|
||
|
|
---
|
||
|
|
|
||
|
|
## Description
|
||
|
|
undefined
|
||
|
|
|
||
|
|
## Instructions
|
||
|
|
undefined
|
||
|
|
|
||
|
|
## Tests
|
||
|
|
<section id='tests'>
|
||
|
|
|
||
|
|
```yml
|
||
|
|
tests:
|
||
|
|
- text: ''
|
||
|
|
testString: 'assert(typeof Vegetable === "function" && typeof Vegetable.constructor === "function", "<code>Vegetable</code> should be a <code>class</code> with a defined <code>constructor</code> method.");'
|
||
|
|
- text: ''
|
||
|
|
testString: 'getUserInput => assert(getUserInput("index").match(/class/g),"<code>class</code> keyword was used.");'
|
||
|
|
- text: ''
|
||
|
|
testString: 'assert(() => {const a = new Vegetable("apple"); return typeof a === "object";},"<code>Vegetable</code> can be instantiated.");'
|
||
|
|
- text: ''
|
||
|
|
testString: 'assert(carrot.name=="carrot","<code>carrot.name</code> should return <code>carrot</code>.");'
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Challenge Seed
|
||
|
|
<section id='challengeSeed'>
|
||
|
|
|
||
|
|
<div id='js-seed'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
function makeClass() {
|
||
|
|
"use strict";
|
||
|
|
/* Alter code below this line */
|
||
|
|
|
||
|
|
/* Alter code above this line */
|
||
|
|
return Vegetable;
|
||
|
|
}
|
||
|
|
const Vegetable = makeClass();
|
||
|
|
const carrot = new Vegetable('carrot');
|
||
|
|
console.log(carrot.name); // => should be 'carrot'
|
||
|
|
|
||
|
|
```
|
||
|
|
|
||
|
|
</div>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
## Solution
|
||
|
|
<section id='solution'>
|
||
|
|
|
||
|
|
```js
|
||
|
|
// solution required
|
||
|
|
```
|
||
|
|
</section>
|