doc: update select
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@ -107,3 +107,11 @@ Select component to select value from options.
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### The dropdown is closed when click `dropdownRender` area?
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See the [dropdownRender example](/components/select/#components-select-demo-custom-dropdown).
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### Why is `placeholder` not displayed?
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`placeholder` will only be displayed when `value = undefined`, and other values such as null, 0,'', etc. are meaningful values for the JS language.
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You can check [JS Language Specification](https://262.ecma-international.org/5.1/#sec-4.3.9) for further details.
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You can also check [antd issue](https://github.com/ant-design/ant-design/issues/2367) to view the discussion.
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@ -32,7 +32,7 @@ cover: https://gw.alipayobjects.com/zos/alicdn/_0XzgOis7/Select.svg
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| defaultActiveFirstOption | 是否默认高亮第一个选项。 | boolean | true | |
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| disabled | 是否禁用 | boolean | false | |
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| dropdownClassName | 下拉菜单的 className 属性 | string | - | |
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| dropdownMatchSelectWidth | 下拉菜单和选择器同宽 | boolean | true | 」
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| dropdownMatchSelectWidth | 下拉菜单和选择器同宽 | boolean | true | 」 |
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| dropdownRender | 自定义下拉框内容 | ({menuNode: VNode, props}) => VNode \| v-slot | - | |
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| dropdownStyle | 下拉菜单的 style 属性 | object | - | |
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| dropdownMenuStyle | dropdown 菜单自定义样式 | object | - | |
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@ -109,3 +109,11 @@ cover: https://gw.alipayobjects.com/zos/alicdn/_0XzgOis7/Select.svg
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### 点击 `dropdownRender` 里的内容浮层关闭怎么办?
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看下 [dropdownRender 例子](/components/select-cn/#components-select-demo-custom-dropdown) 里的说明。
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### 为什么 `placeholder` 不显示 ?
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`placeholder` 只有在 value = undefined 才会显示,对于其它的 null、0、'' 等等对于 JS 语言都是有意义的值。
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你可以查看 [JS 语言规范](https://262.ecma-international.org/5.1/#sec-4.3.9) 进一步了解详情。
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也可以查看 [antd issue](https://github.com/ant-design/ant-design/issues/2367) 查看讨论情况。
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