CODEWITHSUNDEEP
cssvue.jswebpacksassvue-cli
laptou
laptou

Reputation: 6981

How do I use /deep/ or >>> or ::v-deep in Vue.js?

So, I've read here that in Vue.js, you can use /deep/ or >>> in a selector in order to create style rules that apply to elements inside of child components. However, attempting to use this in my styles, whether in SCSS or in plain old CSS, doesn't work. Instead, they are sent to the browser verbatim, and therefore have no effect. For example:

home.vue:

<style lang="css" scoped>
.autocomplete >>> .autocomplete-input 
{
// ...
}
</style>

generated css:

<style type="text/css">
.autocomplete >>> .autocomplete-input[data-v-2bda0c9a]
{
//...
}
</style>

what I want:

<style type="text/css">
.autocomplete[data-v-2bda0c9a] .autocomplete-input
{
//...
}
</style>

My webpack configuration pertaining to vue-loader looks like this:

// ...
{
    test: /\.vue$/,
    loader: "vue-loader",
    options: {
        loaders: {
            scss: "vue-style-loader!css-loader!sass-loader"
        }
    }
}
// ...

So my question is, how do I get this >>> operator to work?

I've already found this answer, but I'm doing exactly that and it doesn't work...

Upvotes: 199

Views: 246760

Answers (9)

Dan
Dan

Reputation: 63059

Vue 3 (and Vue 2.7)

In Vue 3, the ::v- prefix is now deprecated and we no longer need >>>. We can use the unified :deep selector whether using Sass or not, but now it's recommended to use parentheses with the selector.

Use :deep(.child-class)

:deep(.child-class) {
    background-color: #000;
}

This also works in Vue 2.7 (final Vue 2 release)

Vue 2.0 - 2.6

The following also works in Vue 3 but is deprecated.

Sass:   Use ::v-deep

::v-deep .child-class {
    background-color: #000;
}

Not using Sass:   Use >>>

>>> .child-class {
    background-color: #000;
}

With either syntax, the <style> tag for this component must be scoped:

<style scoped>

EXTRA: Vue 3 new selectors

Additionally, in Vue 3, there is a new feature for components with a <slot> that enables styling passed slot content.

Slot content   Use :slotted(.child-class)

:slotted(.slot-class) {
    background-color: #000;
}

And lastly, in Vue 3, there is a new feature to register global styles even from a scoped component:

Global styles   Use :global(.my-class)

:global(.my-class) {
    background-color: #000;
}

With any syntax, the <style> tag for this component must be scoped:

<style scoped>

Summary

In Vue 2:

  • The /deep/ syntax is deprecated
  • Use ::v-deep with Sass, use >>> without Sass

In Vue 3:

  • ::v-deep .child-class is deprecated in favor of :deep(.child-class)
  • The ::v- prefix is deprecated in favor of :
  • The >>> syntax is deprecated
  • The /deep/ syntax is deprecated
  • There are new :slotted and :global selectors

With every version/syntax, the <style> tag for this component must be scoped:

<style scoped>

Upvotes: 471

Michael_313
Michael_313

Reputation: 131

Consider that you have this modal with a specific class 'approval modal' :

<v-dialog v-model="requestForApproveModal" class="approval-modal">
...
</v-dialog>

You can select child classes of this modal using this CSS code inside the scoped style block:

<style scoped>
.approval-modal:deep(.v-alert__content){
  font-size: 18px;
}
</style>

Also note that in my example 'v-alert__content' that I am selecting with deep selector, is for vuetify alert component.

Upvotes: 0

cng.buff
cng.buff

Reputation: 575

To override the CSS properties of a specific element in Vue.js use Vuetify, below workded for me:

<style scoped>
::v-deep .v-overlay__content {
    contain: none !important;
}
</style>

OR

<style scoped>
>>> .v-overlay__content {
    contain: none !important;
}
</style>

Upvotes: 0

وحید فریادرس
وحید فریادرس

Reputation: 111

::v-deep usage as a combinator has been deprecated. Use :deep() instead.

:deep(.child-class) {
    background-color: #000;
}

Upvotes: 11

吴张明
吴张明

Reputation: 379

I solved this problem by adding

options: { styleIsolation: 'shared' }, // add this
methods: {
  yourFunc1 () {
  }
}
.pet-info{
  ::v-deep .title {
    width: 51px !important;
    background-color: red !important
  }
}

Config this in the components like the methods, it's the same level like methods.

Upvotes: 0

Brian Scramlin
Brian Scramlin

Reputation: 368

Though it is not found in the Documentation, the answer is that the component you are attempting to reach cannot be the root component. Wrap your single component in a <div> and it should work using ::v-deep on scoped scss as others have explained.

Upvotes: 3

Kristiyan Tsvetanov
Kristiyan Tsvetanov

Reputation: 1047

For me, the only thing that worked was

<style scoped>.  // sass and scss didn't work
  >>> .deep-selector {
    ...
  }
</style>

Upvotes: 3

Satyam Pathak
Satyam Pathak

Reputation: 6912

Avoid using /deep/ and instead use ::v-deep

Any scoped component's css can be changed by using deep selector but sooner /deep/ will get deprecated

Vue Github reference - https://github.com/vuejs/vue-loader/issues/913

Use ::v-deep in this case,and avoid deprecated /deep/

Reference - Deep Selector

Just inspect class of the rendered element which you want to modify using devtools in chrome or any browser console.

Then, In you consuming component, modify it

<style scoped>
::v-deep .custom-component-class {
   background: red; //
}
</style>

Upvotes: 31

arapl3y
arapl3y

Reputation: 522

I've successfully used /deep/ in Vue's scoped SCSS stylesheets with this structure:

.parent-class {
  & /deep/ .child-class {
    background-color: #000;
  }
}

Edit: /deep/ is being deprecated, if it no longer works for you please refer to the other answer that explains ::v-deep

Upvotes: 26

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