grid - 通过网格线号码来定位网格项目

网格线实际上是代表线的开始、结束. 两者之间就是网格列或行.

以下css仅对子元素生效 ,具体详情可以看后面示例

grid-row-start: 2; 
grid-row-end: 3;
grid-column-start: 2; 
grid-column-end: 3;

以上css会生成两列三行的网格创建三条列网格线和四条行网格线 .

如果一个网格项目跨度只有一行或一列，那么grid-row-end和grid-column-end不是必需的

注意以下几点

1.grid-row包含了grid-row-start和grid-row-end. 例子：grid-row:2 => grid-row-start:2和grid-row-end:2.

2.grid-column包含了grid-column-start和grid-column-end. 例子：grid-column:2 => grid-column-strat:2和grid-column-end:2.

3.grid-row:2/3 包含了grid-row-start:2; grid-row-end:3; 反之grid-column:3/4

4.grid-area:2/3包含了grid-row-start:2; grid-row-end:2; grid-column-start:3; grid-column-end:3;

5.grid-area: 2 / 2 / 3 / 3 ，则包含是：grid-row-start:2; grid-column-start:2; grid-row-end:3; grid-column-end:3;

<view class="grid">
  <view class='item1'>1</view>
  <view class='item'>2</view>
  <view class='item'>3</view>
  <view class='item'>4</view>
</view>

page {
  color: #fff;
  font-size: 16px;
}

.grid {
  /* padding: 1%; */
  display: grid;
  grid-gap: 1px;
  line-height: 100px;
  /* grid-template-columns: repeat(2, 1fr); */
}

.item1 {
  /* grid-row-start: 3;
  grid-row-end: 4; */
  grid-column-start: 1;
  grid-column-end: 4;
}

.item {
  text-align: center;
  background-color: #d94a6a;
}

.item1 {
  text-align: center;
  background-color: #1aa034;
}