---
name: "Animation.scaleY"
mode: "api"
versionRequirements:
  - { name: "基础库", version: "2.21.8" }
title: "Animation.scaleY - 缩放 Y 轴"
---

## Animation.scaleY

> [VERSION] 基础库 >= 2.21.8

### 描述

缩放 Y 轴

### 参数

`Params`

| 参数 | 类型 | 必填 | 描述 |
| --- | --- | --- | --- |
| `scaleY` | `number` | 否 | Y 轴的缩放倍数 |

### 返回值

类型: `Animation`

Animation 实例

### 示例代码

#### 垂直缩放

```ts
Page({
  data: {
    animationData: {},
  },
  onReady() {
    const animation = ty.createAnimation({ duration: 500 });
    animation.scaleY(0.5).step();
    this.setData({ animationData: animation.export() });
  },
});
```