Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

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1.2 KiB
Markdown

---
id: cf1111c1c11feddfaeb1bdef
title: while 循环
challengeType: 1
videoUrl: 'https://scrimba.com/c/c8QbnCM'
forumTopicId: 18220
dashedName: iterate-with-javascript-while-loops
---
# --description--
你可以使用循环多次执行相同的代码。
我们将学习的第一种类型的循环称为 "`while`" 循环,因为它规定,当 "while" 条件为真,循环才会执行,反之不执行。
```js
var ourArray = [];
var i = 0;
while(i < 5) {
ourArray.push(i);
i++;
}
```
在上面的代码里,`while` 循环执行 5 次把 0 到 4 的数字添加到 `ourArray` 数组里。
让我们通过 while 循环将值添加到数组中。
# --instructions--
通过一个`while`循环,把从 0 到 4 的值添加到`myArray`中。
# --hints--
你应该使用`while`循环。
```js
assert(code.match(/while/g));
```
`myArray`应该等于`[0,1,2,3,4]`
```js
assert.deepEqual(myArray, [0, 1, 2, 3, 4]);
```
# --seed--
## --after-user-code--
```js
if(typeof myArray !== "undefined"){(function(){return myArray;})();}
```
## --seed-contents--
```js
// Setup
var myArray = [];
// Only change code below this line
```
# --solutions--
```js
var myArray = [];
var i = 5;
while(i >= 0) {
myArray.push(i);
i--;
}
```