2020-08-13 15:18:26 +08:00
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## Tooltip 文字提示
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常用于展示鼠标 hover 时的提示信息。
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### 基础用法
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在这里我们提供 9 种不同方向的展示方式,可以通过以下完整示例来理解,选择你要的效果。
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:::demo 使用`content`属性来决定`hover`时的提示信息。由`placement`属性决定展示效果:`placement`属性值为:`方向-对齐位置`;四个方向:`top`、`left`、`right`、`bottom`;三种对齐位置:`start`, `end`,默认为空。如`placement="left-end"`,则提示信息出现在目标元素的左侧,且提示信息的底部与目标元素的底部对齐。
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```html
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<div class="box">
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<div class="top">
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2021-09-04 19:29:28 +08:00
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<el-tooltip
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class="item"
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effect="dark"
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content="Top Left 提示文字"
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placement="top-start"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>上左</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Top Center 提示文字"
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placement="top"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>上边</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Top Right 提示文字"
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placement="top-end"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>上右</el-button>
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</el-tooltip>
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</div>
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<div class="left">
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2021-09-04 19:29:28 +08:00
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<el-tooltip
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class="item"
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effect="dark"
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content="Left Top 提示文字"
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placement="left-start"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>左上</el-button>
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</el-tooltip>
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2021-09-04 19:29:28 +08:00
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<el-tooltip
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class="item"
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effect="dark"
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content="Left Center 提示文字"
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placement="left"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>左边</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Left Bottom 提示文字"
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placement="left-end"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>左下</el-button>
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</el-tooltip>
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</div>
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<div class="right">
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<el-tooltip
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class="item"
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effect="dark"
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content="Right Top 提示文字"
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placement="right-start"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>右上</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Right Center 提示文字"
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placement="right"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>右边</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Right Bottom 提示文字"
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placement="right-end"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>右下</el-button>
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</el-tooltip>
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</div>
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<div class="bottom">
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<el-tooltip
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class="item"
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effect="dark"
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content="Bottom Left 提示文字"
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placement="bottom-start"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>下左</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Bottom Center 提示文字"
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placement="bottom"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>下边</el-button>
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</el-tooltip>
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<el-tooltip
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class="item"
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effect="dark"
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content="Bottom Right 提示文字"
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placement="bottom-end"
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>
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2020-08-13 15:18:26 +08:00
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<el-button>下右</el-button>
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</el-tooltip>
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</div>
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</div>
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<style>
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.box {
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width: 400px;
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.top {
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text-align: center;
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}
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.left {
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float: left;
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width: 60px;
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}
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.right {
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float: right;
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width: 60px;
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}
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.bottom {
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clear: both;
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text-align: center;
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}
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.item {
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margin: 4px;
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}
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.left .el-tooltip__popper,
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.right .el-tooltip__popper {
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padding: 8px 10px;
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}
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}
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</style>
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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### 主题
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Tooltip 组件提供了两个不同的主题:`dark`和`light`。
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:::demo 通过设置`effect`属性来改变主题,默认为`dark`。
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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```html
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<el-tooltip content="Top center" placement="top">
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<el-button>Dark</el-button>
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</el-tooltip>
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<el-tooltip content="Bottom center" placement="bottom" effect="light">
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<el-button>Light</el-button>
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</el-tooltip>
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```
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2020-08-13 15:18:26 +08:00
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:::
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### 更多 Content
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展示多行文本或者是设置文本内容的格式
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:::demo 用具名 slot 分发`content`,替代`tooltip`中的`content`属性。
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2020-08-13 15:18:26 +08:00
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```html
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<el-tooltip placement="top">
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<template #content> 多行信息<br />第二行信息 </template>
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2020-08-13 15:18:26 +08:00
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<el-button>Top center</el-button>
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</el-tooltip>
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```
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2020-08-13 15:18:26 +08:00
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:::
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### 高级扩展
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除了这些基本设置外,还有一些属性可以让使用者更好的定制自己的效果:
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`transition` 属性可以定制显隐的动画效果,默认为`fade-in-linear`。
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如果需要关闭 `tooltip` 功能,`disabled` 属性可以满足这个需求,它接受一个`Boolean`,设置为`true`即可。
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事实上,这是基于 [Vue-popper](https://github.com/element-component/vue-popper) 的扩展,你可以自定义任意 Vue-popper 中允许定义的字段。
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2021-09-04 19:29:28 +08:00
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当然 Tooltip 组件实际上十分强大,文末的 API 文档会做一一说明。
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2020-08-13 15:18:26 +08:00
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:::demo
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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```html
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<template>
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2021-09-04 19:29:28 +08:00
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<el-tooltip
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:disabled="disabled"
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content="点击关闭 tooltip 功能"
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placement="bottom"
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effect="light"
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>
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<el-button @click="disabled = !disabled"
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>点击{{disabled ? '开启' : '关闭'}} tooltip 功能</el-button
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>
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2020-08-13 15:18:26 +08:00
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</el-tooltip>
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</template>
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<script>
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export default {
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data() {
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return {
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disabled: false,
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}
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},
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}
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2020-08-13 15:18:26 +08:00
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</script>
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```
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2021-09-04 19:29:28 +08:00
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2020-08-13 15:18:26 +08:00
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:::
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:::tip
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tooltip 内不支持 `router-link` 组件,请使用 `vm.$router.push` 代替。
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tooltip 内不支持 disabled form 元素,参考[MDN](https://developer.mozilla.org/en-US/docs/Web/Events/mouseenter),请在 disabled form 元素外层添加一层包裹元素。
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:::
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### Attributes
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| 参数 | 说明 | 类型 | 可选值 | 默认值 |
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| --------------------- | ------------------------------------------------------------------------------------------------------- | ------- | --------------------------------------------------------------------------------------------------------- | ----------------------------------------------------- |
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| append-to-body | 决定 popper 是否传送到 document.body 下 | Boolean | - | true |
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| effect | 默认提供的主题 | String | dark/light | dark |
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| content | 显示的内容,也可以通过 `slot#content` 传入 DOM | String | — | — |
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| placement | Tooltip 的出现位置 | String | top/top-start/top-end/bottom/bottom-start/bottom-end/left/left-start/left-end/right/right-start/right-end | bottom |
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| model-value / v-model | 状态是否可见 | Boolean | — | false |
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| disabled | Tooltip 是否可用 | Boolean | — | false |
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| offset | 出现位置的偏移量 | Number | — | 0 |
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| transition | 定义渐变动画 | String | — | el-fade-in-linear |
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| visible-arrow | 是否显示 Tooltip 箭头,更多参数可见[Vue-popper](https://github.com/element-component/vue-popper) | Boolean | — | true |
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| popper-options | [popper.js](https://popper.js.org/documentation.html) 的参数 | Object | 参考 [popper.js](https://popper.js.org/documentation.html) 文档 | { boundariesElement: 'body', gpuAcceleration: false } |
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| show-after | 延迟出现,单位毫秒 | Number | — | 0 |
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| hide-after | 延迟关闭,单位毫秒 | Number | — | 0 |
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| auto-close | Tooltip 出现后自动隐藏延时,单位毫秒,为 0 则不会自动隐藏 | number | — | 0 |
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| manual | 手动控制模式,设置为 true 后,mouseenter 和 mouseleave 事件将不会生效 | Boolean | — | false |
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| popper-class | 为 Tooltip 的 popper 添加类名 | String | — | — |
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| enterable | 鼠标是否可进入到 tooltip 中 | Boolean | — | true |
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| tabindex | Tooltip 组件的 [tabindex](https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/tabindex) | number | — | 0 |
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