Settings

BootstrapVue provides a few options for customizing component default values, and more.

Configuring defaults

BootstrapVue is pre-configured for the default Bootstrap v4.x configuration. It assumes the breakpoints are the standard breakpoint names of xs, sm, md, lg, and xl. Also various BootstrapVue components have props with default variants and text content.

BootstrapVue provides several methods for changing the default configuration.

Note that it is not possible to change the defaults when using BootstrapVue via a <script> tag.

Default configuration

Default breakpoint names are stored in the breakpoints property, default form control size is stored under the formControls property, while component specific defaults are keyed by their PascalCase name with the props as camelCase properties. Only properties defined in the default configuration can be overridden. Attempting to set a config property that is not defined in the default will generate a console warning.

{
  "breakpoints": [
    "xs",
    "sm",
    "md",
    "lg",
    "xl"
  ],
  "formControls": {
    "size": null
  },
  "BAlert": {
    "dismissLabel": "Close",
    "variant": "info"
  },
  "BBadge": {
    "variant": "secondary"
  },
  "BButton": {
    "size": null,
    "variant": "secondary"
  },
  "BButtonClose": {
    "textVariant": null,
    "ariaLabel": "Close"
  },
  "BCardSubTitle": {
    "subTitleTextVariant": "muted"
  },
  "BCarousel": {
    "labelPrev": "Previous Slide",
    "labelNext": "Next Slide",
    "labelGotoSlide": "Goto Slide",
    "labelIndicators": "Select a slide to display"
  },
  "BDropdown": {
    "toggleText": "Toggle Dropdown",
    "size": null,
    "variant": "secondary",
    "splitVariant": null
  },
  "BFormFile": {
    "browseText": "Browse",
    "placeholder": "No file chosen",
    "dropPlaceholder": "Drop files here"
  },
  "BFormText": {
    "textVariant": "muted"
  },
  "BImg": {
    "blankColor": "transparent"
  },
  "BImgLazy": {
    "blankColor": "transparent"
  },
  "BInputGroup": {
    "size": null
  },
  "BJumbotron": {
    "bgVariant": null,
    "borderVariant": null,
    "textVariant": null
  },
  "BListGroupItem": {
    "variant": null
  },
  "BModal": {
    "titleTag": "h5",
    "size": "md",
    "headerBgVariant": null,
    "headerBorderVariant": null,
    "headerTextVariant": null,
    "headerCloseVariant": null,
    "bodyBgVariant": null,
    "bodyTextVariant": null,
    "footerBgVariant": null,
    "footerBorderVariant": null,
    "footerTextVariant": null,
    "cancelTitle": "Cancel",
    "cancelVariant": "secondary",
    "okTitle": "OK",
    "okVariant": "primary",
    "headerCloseLabel": "Close"
  },
  "BNavbar": {
    "variant": null
  },
  "BNavbarToggle": {
    "label": "Toggle navigation"
  },
  "BPagination": {
    "size": null
  },
  "BPaginationNav": {
    "size": null
  },
  "BPopover": {
    "boundary": "scrollParent",
    "boundaryPadding": 5,
    "customClass": null,
    "delay": 50,
    "variant": null
  },
  "BProgress": {
    "variant": null
  },
  "BProgressBar": {
    "variant": null
  },
  "BSpinner": {
    "variant": null
  },
  "BTable": {
    "selectedVariant": "active",
    "headVariant": null,
    "footVariant": null
  },
  "BToast": {
    "toaster": "b-toaster-top-right",
    "autoHideDelay": 5000,
    "variant": null,
    "toastClass": null,
    "headerClass": null,
    "bodyClass": null
  },
  "BToaster": {
    "ariaLive": null,
    "ariaAtomic": null,
    "role": null
  },
  "BTooltip": {
    "boundary": "scrollParent",
    "boundaryPadding": 5,
    "customClass": null,
    "delay": 50,
    "variant": null
  }
}

Setting new configuration values

When you Vue.use(BootstrapVue), you can optionally pass a configuration object which specifies new values to replace the default values. For example if you wish to define new breakpoint names (which will generate appropriate properties on components such as <b-col> and <b-form-group>), so that the new breakpoints are ['aa', 'bb', 'cc', 'dd'] then <b-col> will now have bb, cc, and dd props instead of sm, md, lg and xl props (Similar for the label-cols-{breakpoint} and label-align-{breakpoint}props on <b-form-group>):

import BootstrapVue from 'bootstrap-vue'
Vue.use(BootstrapVue, {
  breakpoints: [`xs`, 'sm', 'md', 'lg', 'xl', 'xxl']
})

Or if changing the default variants for <b-button> and <b-alert>:

import BootstrapVue from 'bootstrap-vue'
Vue.use(BootstrapVue, {
  BAlert: { variant: 'danger' },
  BButton: { variant: 'primary' }
})

The values provided as the config option to Vue.use will be merged with the default values.

Note: When defining custom breakpoints, keep the names short (2 to 3 characters). At least two breakpoint names must be defined. The breakpoint names must match the breakpoint names defined in your custom Bootstrap SCSS. Breakpoint names must not conflict with non-breakpoint prop names used on various components (i.e. avoid to, col, etc)

Setting config via individual component group plugin imports

When importing individual component plugins, you can specify a config as well (using the same config structure as above. You only need to provide configuration to the first component you import, but each successive config will be merged with the previous config provided.

Note breakpoint names should be defined before using any components as they are required to generate component breakpoint specific props. Once the component that has breakpoint specific props is used, and subsequent changes to the breakpoints will not be reflected.

Example 1 (least preferred method):

// Component group plugins
import { LayoutPlugin, AlertPlugin, ButtonPlugin } from 'bootstrap-vue'

// Supply configs via each plugin as it is `Vue.use()`'d
Vue.use(LayoutPlugin, { breakpoints: ['xs', 'sm', 'lg', 'xl', 'xxl'] })
Vue.use(AlertPlugin, { BAlert: { variant: 'danger' } })
Vue.use(ButtonPlugin, { BButton: { variant: 'primary' } })

Example 2:

// Component group plugins
import { LayoutPlugin, AlertPlugin, ButtonPlugin } from 'bootstrap-vue'

// Supply complete config to first `Vue.use()`'d plugin
Vue.use(LayoutPlugin, {
  breakpoints: ['xs', 'sm', 'lg', 'xl', 'xxl'],
  BAlert: { variant: 'danger' },
  BButton: { variant: 'primary' }
})
Vue.use(AlertPlugin)
Vue.use(ButtonPlugin)

Example 3 (most preferred method):

// BootstrapVue configuration helper plugin and Component group plugins
import { BVConfigPlugin, LayoutPlugin, AlertPlugin, ButtonPlugin } from 'bootstrap-vue'

// Supply complete config to the BVConfigPlugin helper plugin
Vue.use(BVConfigPlugin, {
  breakpoints: ['xs', 'sm', 'lg', 'xl', 'xxl'],
  BAlert: { variant: 'danger' },
  BButton: { variant: 'primary' }
})

// Then use component plugins
Vue.use(LayoutPlugin)
Vue.use(AlertPlugin)
Vue.use(ButtonPlugin)

Example 4 when importing individual components (preferred method):

// Import BootstrapVue configuration helper plugin and Individual components
import { BVConfigPlugin, BAlert, BButton, BRow, BCol } from 'bootstrap-vue'

// Supply complete config to the BVConfig helper plugin
Vue.use(BVConfigPlugin, {
  breakpoints: ['xs', 'sm', 'lg', 'xl', 'xxl'],
  BAlert: { variant: 'danger' },
  BButton: { variant: 'primary' }
})

// Then install components globally
Vue.component('b-alert', BAlert)
Vue.component('b-button', BButton)
Vue.component('b-row', BRow)
Vue.component('b-col', BCol)

// Or register components as local to your custom component
export default {
  name: 'MyComponent',
  components: {
    BAlert,
    BButton,
    BRow,
    BCol
  }
  // ...
}

Caveat: Vue only installs plugins once. If you import a plugin that has already been imported by another component plugin, the configuration passed to the component plugin will not be merged in. It is best to set the complete configuration using the BVConfigPlugin helper plugin as shown in Example 3 and Example 4 above. The BVConfigPlugin plugin should be used in the main entry point of your app, and before any Vue.use() of component plugins or Vue.component() or individual components.

Setting the config via Nuxt.js BootstrapVue plugin

Refer to the Getting Started documentation for information on passing the config object to the Nuxt.js plugin module.

Disabling BootstrapVue console warnings

BootstrapVue will warn (via console.warn) when you try and use a deprecated prop, or pass an invalid value to certain props. These warnings are provided to help you ensure that your application is using the correct props and values.

In some cases, you may want to disable these warnings (not recommended). You can do so by setting the following process environment variable:

process.env.BOOTSTRAP_VUE_NO_WARN = true

By ignoring warnings, you may find that your project fails/breaks when using future releases of bootstrapVue where deprecated props have been removed.

Warnings should be corrected before moving your project into production!