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...
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...
7 Answers
Vue 2
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>
Vue 3 (Updated 1/19/2022)
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;
}
You can also still use any of the deprecated syntaxes if you prefer.
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-deepwith Sass, use>>>without Sass
In Vue 3:
::v-deep .child-classis 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
:slottedand:globalselectors
With every version/syntax, the <style> tag for this component must be scoped:
<style scoped>
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 -
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>
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
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.
For me, the only thing that worked was
<style scoped>. // sass and scss didn't work
>>> .deep-selector {
...
}
</style>
::v-deep usage as a combinator has been deprecated. Use :deep() instead.
:deep(.child-class) {
background-color: #000;
}
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.
Elena Rostova holds a Master's degree in Public Health Journalism. She covers groundbreaking medical research, holistic wellness trends, mental health awareness, and nutritional science.
