2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								---
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								id: 5a94fe3669fb03452672e45f
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								title: 使用 repeat 函数减少重复
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								challengeType: 0
							 | 
						
					
						
							
								
									
										
										
										
											2020-02-11 21:39:15 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								videoUrl: 'https://scrimba.com/p/pByETK/cQvqyHR'
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								forumTopicId: 301133
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-13 03:31:00 +01:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								dashedName: reduce-repetition-using-the-repeat-function
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								---
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								# --description--
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-08 11:20:48 -08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								使用 `grid-template-columns` 或 `grid-template-rows` 定义网格结构时,你需要为添加的每一行或每一列都输入一个值。
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-02-06 04:42:36 +00:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								如果一个网格共有 100 行且每行高度相同, 那我们就需要输入 100 个值,这显然不太实际。 为此,更好的方式是使用 `repeat` 方法指定行或列的重复次数,后面加上逗号以及需要重复的值。
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-08 11:20:48 -08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
										
									
								 | 
							
							
								以下为添加 100 行网格的例子,每行高度均为 50px:
							 | 
						
					
						
							
								
									
										
										
										
											2020-02-11 21:39:15 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```css
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								grid-template-rows: repeat(100, 50px);
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-02-06 04:42:36 +00:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								你还可以用 repeat 方法重复多个值,并在定义网格结构时与其他值一起使用。 比如:
							 | 
						
					
						
							
								
									
										
										
										
											2020-02-11 21:39:15 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```css
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								grid-template-columns: repeat(2, 1fr 50px) 20px;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								效果相当于:
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```css
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								grid-template-columns: 1fr 50px 1fr 50px 20px;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-08 11:20:48 -08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								**注意:**`1fr 50px` 重复了两次,后面跟着 20px。
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								# --instructions--
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-08 11:20:48 -08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								请用 `repeat` 代替 `grid-template-columns` 属性值中的重复代码。
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								# --hints--
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-08 11:20:48 -08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								class 为 `container` 的元素应具有 `grid-template-columns` 属性,其属性值应设置为重复 3 列,且每列宽度为 `1fr`。
							 | 
						
					
						
							
								
									
										
										
										
											2020-02-11 21:39:15 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```js
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								assert(
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  code.match(
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    /.container\s*?{[\s\S]*grid-template-columns\s*?:\s*?repeat\s*?\(\s*?3\s*?,\s*?1fr\s*?\)\s*?;[\s\S]*}/gi
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  )
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								);
							 | 
						
					
						
							
								
									
										
										
										
											2018-10-10 18:03:03 -04:00
										 
									 
								 
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 | 
						
					
						
							
								
									
										
										
										
											2020-02-11 21:39:15 +08:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-13 03:31:00 +01:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								# --seed--
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								## --seed-contents--
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```html
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								<style>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .item1{background:LightSkyBlue;}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .item2{background:LightSalmon;}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .item3{background:PaleTurquoise;}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .item4{background:LightPink;}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .item5{background:PaleGreen;}
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  .container {
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    font-size: 40px;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    min-height: 300px;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    width: 100%;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    background: LightGray;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    display: grid;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    /* Only change code below this line */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    grid-template-columns: 1fr 1fr 1fr;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    /* Only change code above this line */
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    grid-template-rows: 1fr 1fr 1fr;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								    grid-gap: 10px;
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  }
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								</style>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								<div class="container">
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  <div class="item1">1</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  <div class="item2">2</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  <div class="item3">3</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  <div class="item4">4</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								  <div class="item5">5</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								</div>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2020-12-16 00:37:30 -07:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								# --solutions--
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								
							 | 
						
					
						
							
								
									
										
										
										
											2021-01-13 03:31:00 +01:00
										 
									 
								 
							 | 
							
								
									
										
									
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```html
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								<style>.container {grid-template-columns: repeat(3, 1fr);}</style>
							 | 
						
					
						
							| 
								
							 | 
							
								
							 | 
							
								
							 | 
							
								
									
								 | 
							
							
								```
							 |