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BootstrapVue, with over 40 plugins and more than 75 custom components, provides one of the most comprehensive implementations of Bootstrap v4 components and grid system for Vue.js. With extensive and automated WAI-ARIA accessibility markup.

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bootstrap-vue/bootstrap-vue

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# Tooltips > Easily add tooltips to elements or components via the `<b-tooltip>` component or > [`v-b-tooltip`](/docs/directives/tooltip) directive (preferred method). ```html <div class="text-center my-3"> <b-button v-b-tooltip.hover title="Tooltip content">Hover Me</b-button> </div>  ``` ## Overview Things to know when using tooltip component: - Tooltips rely on the 3rd party library Popper.js for positioning. The library is bundled with BootstrapVue in the dist files! - Tooltips with zero-length titles are never displayed. - Triggering tooltips on hidden elements will not work. - Specify `container` as `null` (default, appends to `<body>`) to avoid rendering problems in more complex components (like input groups, button groups, etc). You can use container to optionally specify a different element to append the rendered tooltip to. - Tooltips for `disabled` elements must be triggered on a wrapper element. - When triggered from hyperlinks that span multiple lines, tooltips will be centered. Use white-space: nowrap; on your `<a>`s, `<b-link>`s and `<router-link>`s to avoid this behavior. - Tooltips must be hidden before their corresponding elements have been removed from the DOM. The `<b-tooltip>` component inserts a hidden (`display:none`) `<div>` intermediate container element at the point in the DOM where the `<b-tooltip>` component is placed. This may affect layout and/or styling of components such as `<b-button-group>`, `<b-button-toolbar>`, and `<b-input-group>`. To avoid these possible layout issues, place the `<b-tooltip>` component **outside** of these types of components. The target element **must** exist in the document before `<b-tooltip>` is mounted. If the target element is not found during mount, the tooltip will never open. Always place your `<b-tooltip>` component lower in the DOM than your target element. This rule also applies if a callback is used as target element, since that callback is called only once on mount. **Note:** _When using the default slot for the title, `<b-tooltip>` transfers the rendered DOM from that slot into the tooltip's markup when shown, and returns the content back to the `<b-tooltip>` component when hidden. This may cause some issues in rare circumstances, so please test your implementation accordingly! The `title` prop does not have this behavior. For simple tooltips, we recommend using the `v-b-tooltip` directive and enable the `html` modifier if needed._ ## Positioning Twelve options are available for positioning: `top`, `topleft`, `topright`, `right`, `righttop`, `rightbottom`, `bottom`, `bottomleft`, `bottomright`, `left`, `lefttop`, and `leftbottom` aligned. The default position is `top`. Positioning is relative to the trigger element. <div class="bd-example bd-example-tooltip-static"> <div class="tooltip bs-tooltip-top bs-tooltip-top-docs" role="tooltip"> <div class="arrow" style="left: 6px"></div> <div class="tooltip-inner">Tooltip on the top</div> </div> <div class="tooltip bs-tooltip-top bs-tooltip-top-docs" role="tooltip"> <div class="arrow" style="right: 6px"></div> <div class="tooltip-inner">Tooltip on the topleft</div> </div> <div class="tooltip bs-tooltip-top bs-tooltip-top-docs" role="tooltip"> <div class="arrow" style="left: 6px"></div> <div class="tooltip-inner">Tooltip on the topright</div> </div> <div class="tooltip bs-tooltip-right bs-tooltip-right-docs" role="tooltip"> <div class="arrow" style="top: 4px"></div> <div class="tooltip-inner">Tooltip on the right</div> </div> <div class="tooltip bs-tooltip-right bs-tooltip-right-docs" role="tooltip"> <div class="arrow" style="bottom: 4px"></div> <div class="tooltip-inner">Tooltip on the righttop</div> </div> <div class="tooltip bs-tooltip-right bs-tooltip-right-docs" role="tooltip"> <div class="arrow" style="top: 4px"></div> <div class="tooltip-inner">Tooltip on the rightbottom</div> </div> <div class="tooltip bs-tooltip-bottom bs-tooltip-bottom-docs" role="tooltip"> <div class="arrow" style="left: 6px"></div> <div class="tooltip-inner">Tooltip on the bottom</div> </div> <div class="tooltip bs-tooltip-bottom bs-tooltip-bottom-docs" role="tooltip"> <div class="arrow" style="right: 6px"></div> <div class="tooltip-inner">Tooltip on the bottomleft</div> </div> <div class="tooltip bs-tooltip-bottom bs-tooltip-bottom-docs" role="tooltip"> <div class="arrow" style="left: 6px"></div> <div class="tooltip-inner">Tooltip on the bottomright</div> </div> <div class="tooltip bs-tooltip-left bs-tooltip-left-docs" role="tooltip"> <div class="arrow" style="top: 4px"></div> <div class="tooltip-inner">Tooltip on the left</div> </div> <div class="tooltip bs-tooltip-left bs-tooltip-left-docs" role="tooltip"> <div class="arrow" style="bottom: 4px"></div> <div class="tooltip-inner">Tooltip on the lefttop</div> </div> <div class="tooltip bs-tooltip-left bs-tooltip-left-docs" role="tooltip"> <div class="arrow" style="top: 4px"></div> <div class="tooltip-inner">Tooltip on the leftbottom</div> </div> </div> ## Triggers Tooltips can be triggered (opened/closed) via any combination of `click`, `hover` and `focus`. The default trigger is `hover focus`. If a tooltip has more than one trigger, then all triggers must be cleared before the tooltip will close. I.e. if a tooltip has the trigger `focus click`, and it was opened by `focus`, and the user then clicks the trigger element, they must click it again **and** move focus to close the tooltip. ## `<b-tooltip>` component usage ```html <b-container fluid> <b-row> <b-col md="4" class="py-4"> <b-button id="button-1" variant="outline-success">Live chat</b-button> </b-col> <b-col md="4" class="py-4"> <b-button id="button-2" variant="outline-success">Html chat</b-button> </b-col> <b-col md="4" class="py-4"> <b-button ref="button-3" variant="outline-success">Alternative chat</b-button> </b-col> </b-row>  <b-tooltip target="button-1" title="Online!"></b-tooltip>  <b-tooltip target="button-2" placement="bottom"> Hello <strong>World!</strong> </b-tooltip>  <b-tooltip :target="() => $refs['button-3']" title="Alternative!"></b-tooltip> </b-container>  ``` ### Component options | Prop | Default | Description | Supported values | | -------------------- | ---------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | | `target` | `null` | Element String ID, or a reference to an element or component, or a function returning either of them, that you want to trigger the tooltip. **Required** | Any valid, in-document unique element ID, element reference or component reference or a function returning any such ID / reference | | `title` | `null` | Tooltip content (text only, no HTML). if HTML is required, place it in the default slot | Plain text | | `placement` | `'top'` | Tooltip position, relative to the trigger element. | `top`, `bottom`, `left`, `right`, `auto`, `topleft`, `topright`, `bottomleft`, `bottomright`, `lefttop`, `leftbottom`, `righttop`, `rightbottom` | | `fallback-placement` | `'flip'` | Auto-flip placement behaviour of the tooltip, relative to the trigger element. | `flip`, `clockwise`, `counterclockwise`, or an array of valid placements evaluated from left to right | | `triggers` | `'hover focus'` | Space separated list of event(s), which will trigger open/close of tooltip | `hover`, `focus`, `click`. Note `blur` is a special use case to close tooltip on next click, usually used in conjunction with `click`. | | `no-fade` | `false` | Disable fade animation when set to `true` | `true` or `false` | | `delay` | `0` | Delay showing and hiding of tooltip by specified number of milliseconds. Can also be specified as an object in the form of `{ show: 100, hide: 400 }` allowing different show and hide delays | `0` and up, integers only. | | `offset` | `0` | Shift the center of the tooltip by specified number of pixels | Any negative or positive integer | | `container` | `null` | Element string ID to append rendered tooltip into. If `null` or element not found, tooltip is appended to `<body>` (default) | Any valid in-document unique element ID. | | `boundary` | `'scrollParent'` | The container that the tooltip will be constrained visually. The default should suffice in most cases, but you may need to change this if your target element is in a small container with overflow scroll | `'scrollParent'` (default), `'viewport'`, `'window'`, or a reference to an HTML element. | | `boundary-padding` | `5` | Amount of pixel used to define a minimum distance between the boundaries and the tooltip. This makes sure the tooltip always has a little padding between the edges of its container. | Any positive number | ### Programmatically show and hide tooltip You can manually control the visibility of a tooltip via the syncable Boolean `show` prop. Setting it to `true` will show the tooltip, while setting it to `false` will hide the tooltip. ```html <template> <div class="text-center"> <div> <b-button id="tooltip-button-1" variant="primary">I have a tooltip</b-button> </div> <div class="mt-3"> <b-button @click="show = !show">Toggle Tooltip</b-button> </div> <b-tooltip :show.sync="show" target="tooltip-button-1" placement="top"> Hello <strong>World!</strong> </b-tooltip> </div> </template> <script> export default { data: { show: true } } </script>  ``` To make the tooltip shown on initial render, simply add the `show` prop on `<b-tooltip>`: ```html <div class="text-center"> <b-button id="tooltip-button-2" variant="primary">Button</b-button> <b-tooltip show target="tooltip-button-2">I start open</b-tooltip> </div>  ``` Programmatic control can also be affected by submitting `'open'` and `'close'` events to the tooltip by reference. ```html <template> <div class="d-flex flex-column text-md-center"> <div class="p-2"> <b-button id="tooltip-button-show-event" variant="primary">I have a tooltip</b-button> </div> <div class="p-2"> <b-button class="px-1" @click="onOpen">Open</b-button> <b-button class="px-1" @click="onClose">Close</b-button> </div> <b-tooltip ref="tooltip" target="tooltip-button-show-event"> Hello <strong>World!</strong> </b-tooltip> </div> </template> <script> export default { methods: { onOpen() { this.$refs.tooltip.$emit('open') }, onClose() { this.$refs.tooltip.$emit('close') } } } </script>  ``` You can also use `$root` events to trigger the showing and hiding of tooltip(s). See the **Hiding and showing tooltips via \$root events** section below for details. ### Programmatically disabling tooltip You can disable tooltip via the syncable Boolean prop `disabled` (default is `false`) Setting it to `true` will disable the tooltip. If the tooltip is currently visible when disabled is set to `false`, the tooltip will remain visible until it is enabled or programmatically closed. If the tooltip is disabled/enabled via \$root events (see below), your `disabled` value will be updated as long as you have provided the `.sync` prop modifier. ```html <template> <div class="d-flex flex-column text-md-center"> <div class="p-2"> <b-button id="tooltip-button-disable" variant="primary">I have a tooltip</b-button> </div> <div class="p-2"> <b-button @click="disabled = !disabled"> {{ disabled ? 'Enable' : 'Disable' }} Tooltip by prop </b-button> <b-button @click="disableByRef"> {{ disabled ? 'Enable' : 'Disable' }} Tooltip by $ref event </b-button> <b-tooltip :disabled.sync="disabled" ref="tooltip" target="tooltip-button-disable"> Hello <strong>World!</strong> </b-tooltip> </div> </div> </template> <script> export default { data() { return { disabled: false } }, methods: { disableByRef() { if (this.disabled) { this.$refs.tooltip.$emit('enable') } else { this.$refs.tooltip.$emit('disable') } } } } </script>  ``` **Note:** _In the above example, since we are using the default tooltip triggers of `focus hover`, the tooltip will close before it is disabled due to loosing focus (and hover) to the toggle button._ You can also emit `$root` events to trigger disabling and enabling of tooltip(s). See the **Disabling and enabling tooltips via \$root events** section below for details. You can also emit `$root` events to trigger disabling and enabling of popover(s). See the **Disabling and enabling tooltips via \$root events** section below for details. ## `v-b-tooltip` directive usage The `v-b-tooltip` directive makes adding tooltips even easier, without additional placeholder markup: ```html <b-container fluid> <b-row> <b-col md="6" class="py-4"> <b-button v-b-tooltip title="Online!" variant="outline-success">Live chat</b-button> </b-col> <b-col md="6" class="py-4"> <b-button v-b-tooltip.html title="Hello <strong>World!</strong>" variant="outline-success" > Html chat </b-button> </b-col> </b-row> </b-container>  ``` Refer to the [`v-b-tooltip` documentation](/docs/directives/tooltip) for more information and features of the directive format. ## 'Global' \$root instance events Using `$root` instance it is possible to emit and listen events somewhere out of a component, where `<b-collapse>` is used. In short, `$root` behaves like a global event emitters and listener. Details about `$root` instance can be found in [the official Vue docs](https://vuejs.org/v2/guide/components-edge-cases.html#Accessing-the-Root-Instance). ### Hiding and showing tooltips via \$root events You can close (hide) **all open tooltips** by emitting the `bv::hide::tooltip` event on \$root: ```js this.$root.$emit('bv::hide::tooltip') ``` To close a **specific tooltip**, pass the trigger element's `id` as the argument: ```js this.$root.$emit('bv::show::tooltip', 'my-trigger-button-id') ``` To open a **specific tooltip**, pass the trigger element's `id` as the argument when emitting the `bv::show::tooltip` \$root event: ```js this.$root.$emit('bv::show::tooltip', 'my-trigger-button-id') ``` To open all tooltips simultaneously, omit the `id` argument when emitting the `bv::show::tooltip` event. These events work for both the component **and** directive versions of tooltip. **Note:** _the **trigger element** must exist in the DOM and be in a visible state in order for the tooltip to show._ ### Disabling and enabling tooltips via \$root events You can disable **all open tooltips** by emitting the `bv::disable::tooltip` event on \$root: ```js this.$root.$emit('bv::disable::tooltip') ``` To disable a **specific tooltip**, pass the trigger element's `id` as the argument: ```js this.$root.$emit('bv::disable::tooltip', 'my-trigger-button-id') ``` To enable a **specific tooltip**, pass the trigger element's `id` as the argument when emitting the `bv::enable::tooltip` \$root event: ```js this.$root.$emit('bv::enable::tooltip', 'my-trigger-button-id') ``` To enable all tooltips simultaneously, omit the `id` argument when emitting the `bv::enable::tooltip` event. These events work for both the component **and** directive versions of tooltip. **Note:** _The **trigger element** must exist in the DOM in order for the tooltip to be enabled or disabled._ ### Listening to tooltip changes via \$root events To listen to any tooltip opening, use: ```js export default { mounted() { this.$root.$on('bv::tooltip::show', bvEvent => { console.log('bvEvent:', bvEvent) }) } } ``` Refer to the [Events](/docs/components/tooltip#component-reference) section of documentation for the full list of events.