# 业务层

## 配置

| 属性      | 类型                | 描述                       |
| --------- | ------------------- | -------------------------- |
| `disable` | `Boolean`           | 是否禁用组件               |
| `name`    | `String`            | 组件唯一名称，用于标记类名 |
| `index`   | `Number`            | 组件索引，用于显示的优先级 |
| `html`    | `String`, `Element` | 组件的 DOM 元素            |
| `style`   | `Object`            | 组件样式对象               |
| `click`   | `Function`          | 组件点击事件               |
| `mounted` | `Function`          | 组件挂载后触发             |
| `tooltip` | `String`            | 组件的提示文本             |

## 创建

<div className="run-code">▶ Run Code</div>

```js{5-22}
var img = '/assets/sample/layer.png';
var art = new Artplayer({
    container: '.artplayer-app',
    url: '/assets/sample/video.mp4',
    layers: [
        {
            name: 'potser',
            html: `<img style="width: 100px" src="${img}">`,
            tooltip: 'Potser Tip',
            style: {
                position: 'absolute',
                top: '50px',
                right: '50px',
            },
            click: function (...args) {
                console.info('click', args);
            },
            mounted: function (...args) {
                console.info('mounted', args);
            },
        },
    ],
});

// Get the Element of layer by name
console.info(art.layers['potser']);
```

## 添加

<div className="run-code">▶ Run Code</div>

```js{7-22}
var img = '/assets/sample/layer.png';
var art = new Artplayer({
    container: '.artplayer-app',
    url: '/assets/sample/video.mp4',
});

art.layers.add({
    name: 'potser',
    html: `<img style="width: 100px" src="${img}">`,
    tooltip: 'Potser Tip',
    style: {
        position: 'absolute',
        top: '50px',
        right: '50px',
    },
    click: function (...args) {
        console.info('click', args);
    },
    mounted: function (...args) {
        console.info('mounted', args);
    },
});

// Get the Element of layer by name
console.info(art.layers['potser']);
```

## 删除

<div className="run-code">▶ Run Code</div>

```js{21}
var img = '/assets/sample/layer.png';
var art = new Artplayer({
    container: '.artplayer-app',
    url: '/assets/sample/video.mp4',
    layers: [
        {
            name: 'potser',
            html: `<img style="width: 100px" src="${img}">`,
            style: {
                position: 'absolute',
                top: '50px',
                right: '50px',
            },
        },
    ],
});

art.on('ready', () => {
    setTimeout(() => {
        // Delete the layer by name
        art.layers.remove('potser');
    }, 3000);
});
```

## 更新

<div className="run-code">▶ Run Code</div>

```js{21-29}
var img = '/assets/sample/layer.png';
var art = new Artplayer({
    container: '.artplayer-app',
    url: '/assets/sample/video.mp4',
    layers: [
        {
            name: 'potser',
            html: `<img style="width: 100px" src="${img}">`,
            style: {
                position: 'absolute',
                top: '50px',
                right: '50px',
            },
        },
    ],
});

art.on('ready', () => {
    setTimeout(() => {
        // Update the layer by name
        art.layers.update({
            name: 'potser',
            html: `<img style="width: 200px" src="${img}">`,
            style: {
                position: 'absolute',
                top: '50px',
                left: '50px',
            },
        });
    }, 3000);
});
```