## Tooltip Display prompt information for mouse hover. ### Basic usage Tooltip has 9 placements. :::demo Use attribute `content` to set the display content when hover. The attribute `placement` determines the position of the tooltip. Its value is `[orientation]-[alignment]` with four orientations `top`, `left`, `right`, `bottom` and three alignments `start`, `end`, `null`, and the default alignment is null. Take `placement="left-end"` for example, Tooltip will display on the left of the element which you are hovering and the bottom of the tooltip aligns with the bottom of the element. ```html
top-start top top-end
left-start left left-end
right-start right right-end
bottom-start bottom bottom-end
``` ::: ### Theme Tooltip has two themes: `dark` and `light`。 :::demo Set `effect` to modify theme, and the default value is `dark`. ```html Dark Light ``` ::: ### More Content Display multiple lines of text and set their format. :::demo Override attribute `content` of `el-tooltip` by adding a slot named `content`. ```html
multiple lines
second line
Top center ``` ::: ### Advanced usage In addition to basic usages, there are some attributes that allow you to customize your own: `transition` attribute allows you to customize the animation in which the tooltip shows or hides, and the default value is `fade-in-linear`. `disabled` attribute allows you to disable `tooltip`. You just need set it to `true`. In fact, Tooltip is an extension based on [Vue-popper](https://github.com/element-component/vue-popper), you can use any attribute that are allowed in Vue-popper. :::demo ```html ``` ::: ### Attributes | Attribute | Description | Type | Accepted Values | Default | |----------------|---------|-----------|-------------|--------| | effect | Tooltip theme | string | dark/light | dark | | content | display content, can be overridden by `slot#content` | String | — | — | | placement | position of Tooltip | string | top/top-start/top-end/bottom/bottom-start/bottom-end/left/left-start/left-end/right/right-start/right-end | bottom | | value(v-model) | visibility of Tooltip | boolean | — | false | | disabled | whether Tooltip is disabled | boolean | — | false | | offset | offset of the Tooltip | number | — | 0 | | transition | animation name | string | — | `fade-in-linear` | | visible-arrow | whether an arrow is displayed. For more information, check [Vue-popper](https://github.com/element-component/vue-popper) page | boolean | — | true | | options | [popper.js](https://popper.js.org/documentation.html) parameters | Object | refer to [popper.js](https://popper.js.org/documentation.html) doc | `{ boundariesElement: 'body', gpuAcceleration: false }` | | openDelay | delay of appearance, in millisecond | number | — | 0 | | manual | whether to control Tooltip manually. `mouseenter` and `mouseleave` won't have effects if set to `true`事件将不会生效 | boolean | — | false |