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---
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title: 处理单个组件
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sidebar_position: 3
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---
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当我们在`layers`、`contextmenu`、`controls`里添加自定义组件时,最好带上一个唯一的 `name` 属性,该属性不但会作为类名添加到 dom 元素里,还可以用于快速定位到组件。
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这里有三种方法获取组件的dom元素:组件方法 `mounted`、实例方法 `query`、推荐通过 `name` 直接获取
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<div className="run-code">▶ Run Code</div>
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```js
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var art = new Artplayer({
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container: '.artplayer-app',
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url: '/assets/sample/video.mp4',
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setting: true,
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});
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art.on('ready', () => {
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art.layers.add({
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name: 'layer1',
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html: 'your-layer',
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mounted: function($layer1) {
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//
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}
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});
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art.contextmenu.add({
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name: 'contextmenu1',
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html: 'your-contextmenu',
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mounted: function($contextmenu1) {
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//
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}
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});
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art.controls.add({
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name: 'control1',
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html: 'your-control',
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position: 'right',
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mounted: function($control1) {
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//
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}
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});
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// 使用查询 query 获取组件的DOM元素
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var $layer1 = art.query('.art-layer-layer1');
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var $contextmenu1 = art.query('.art-contextmenu-contextmenu1');
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var $control1 = art.query('.art-control-control1');
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// 推荐使用 name 获取组件的DOM元素
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var $layer1 = art.layers['layer1'];
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var $contextmenu1 = art.contextmenu['contextmenu1'];
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var $control1 = art.controls['control1'];
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});
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```
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:::tip 提示
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注意,你不能创建存在相同名字的组件
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:::
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