ee1e8abd87
* 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>
74 lines
1.2 KiB
Markdown
74 lines
1.2 KiB
Markdown
---
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id: cf1111c1c11feddfaeb1bdef
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title: while 循环
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challengeType: 1
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videoUrl: 'https://scrimba.com/c/c8QbnCM'
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forumTopicId: 18220
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dashedName: iterate-with-javascript-while-loops
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---
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# --description--
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你可以使用循环多次执行相同的代码。
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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。
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```js
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var ourArray = [];
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var i = 0;
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while(i < 5) {
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ourArray.push(i);
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i++;
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}
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```
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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。
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让我们通过 while 循环将值添加到数组中。
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# --instructions--
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通过一个`while`循环，把从 0 到 4 的值添加到`myArray`中。
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# --hints--
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你应该使用`while`循环。
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```js
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assert(code.match(/while/g));
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```
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`myArray`应该等于`[0,1,2,3,4]`。
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```js
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assert.deepEqual(myArray, [0, 1, 2, 3, 4]);
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```
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# --seed--
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## --after-user-code--
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```js
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if(typeof myArray !== "undefined"){(function(){return myArray;})();}
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```
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## --seed-contents--
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```js
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// Setup
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var myArray = [];
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// Only change code below this line
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```
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# --solutions--
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```js
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var myArray = [];
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var i = 5;
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while(i >= 0) {
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myArray.push(i);
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i--;
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}
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```
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