Using Vue.js: Is there a way to apply scoped CSS to dynamically generated HTML content?

Question

Using Vue.js: Is there a way to apply scoped CSS to dynamically generated HTML content?

Summary:

I'm struggling to apply scoped CSS styling to dynamically generated HTML in my Vue component. The generated HTML lacks the necessary data attribute for scoping, making it difficult to style with scoped CSS rules.

Details:

In a function called highlight, I create an HTML string that highlights occurrences of a search term by wrapping them in <span class="match"> tags. However, due to the manual nature of constructing this string, the <span> elements do not have the required data attribute needed for scoped CSS in Vue components. As a result, I am unable to style these matches using scoped CSS and resort to using unscoped CSS, which is not ideal. Is there a more Vue-specific approach to achieve this styling within the scoped environment? Here is the code snippet for the highlight function:

// Source: http://stackoverflow.com/a/280805/2874789
function highlight(data, search) {
    return data.replace(
      new RegExp("(" + preg_quote(search) + ")", 'gi'),
      "<span class=match>$1</span>"
    );
}

(preg_quote is simply a function used for escaping characters)

Appreciate any assistance!

javascript vue.js vuejs2 vue-component

Answer 1

Answer №1

Generating Content Dynamically When creating DOM content with v-html, scoped styles do not affect it, but you can still apply styles using deep selectors.

There doesn't seem to be a specific VueJS method for this. Your best bet might be to either inline styling within your highlight function's output or use a global class.

function highlight(data, search) {
  return data.replace(
    new RegExp("(" + preg_quote(search) + ")", 'gi'),
     "<span class=match>$1</span>"
    );
}


<style>
  .match {
    color: yellow;
  }
</style>

or

function highlight(data, search) {
  return data.replace(
    new RegExp("(" + preg_quote(search) + ")", 'gi'),
     "<span style="{ color: yellow }">$1</span>"
    );
}

You could also explore deep selectors, although I don't have much experience with them myself.

Check out more about scoped CSS in Vue.js here.

Answer 2

Generating Content Dynamically When creating DOM content with v-html, scoped styles do not affect it, but you can still apply styles using deep selectors.

There doesn't seem to be a specific VueJS method for this. Your best bet might be to either inline styling within your highlight function's output or use a global class.

function highlight(data, search) {
  return data.replace(
    new RegExp("(" + preg_quote(search) + ")", 'gi'),
     "<span class=match>$1</span>"
    );
}


<style>
  .match {
    color: yellow;
  }
</style>

or

function highlight(data, search) {
  return data.replace(
    new RegExp("(" + preg_quote(search) + ")", 'gi'),
     "<span style="{ color: yellow }">$1</span>"
    );
}

You could also explore deep selectors, although I don't have much experience with them myself.

Check out more about scoped CSS in Vue.js here.

Answer 3

Answer №2

Recently encountered a similar situation. A simple solution is to avoid scoping it and instead, namespace your markup and CSS classes. This prevents them from being inherited by other modules, saving you unnecessary hassle of using JavaScript for this task.

Answer 4

Recently encountered a similar situation. A simple solution is to avoid scoping it and instead, namespace your markup and CSS classes. This prevents them from being inherited by other modules, saving you unnecessary hassle of using JavaScript for this task.

Answer 5

Answer №3

This is a fascinating situation.

Although using only scoped styles may not be enough, we can work around it by adding an extra <style> element with css modules (which are also scoped).

My thought process went like this:

<style scoped>
  ...
</style>

<style module>
  .match {
    color: red;
  }
</style>

Then, in your replace function, you can use:

`<span class="${this.$style.match}">...</span>`

To learn more about vue-loader's CSS module support, check out:

Answer 6

This is a fascinating situation.

Although using only scoped styles may not be enough, we can work around it by adding an extra <style> element with css modules (which are also scoped).

My thought process went like this:

<style scoped>
  ...
</style>

<style module>
  .match {
    color: red;
  }
</style>

Then, in your replace function, you can use:

`<span class="${this.$style.match}">...</span>`

To learn more about vue-loader's CSS module support, check out:

Answer 7

Answer №4

Interesting inquiry! I encountered a similar issue and managed to find a creative solution. Excited to share it with you!

Imagine your template resembles the following:

<template>
  <div class="match">
    <div v-html="<span>hello world</span>"></div>
  </div>
</template>

Simply modify this segment:

<style scoped>
.match span {
    color: yellow;
}
</style>

compiled output: `.match span[data-v-f3f3eg9] { color: yellow; }`

to

<style scoped>
.match >>> span {
    color: yellow;
}
</style>

compiled output: `.match[data-v-f3f3eg9] span { color: yellow; }`

Observe the distinction between the two outputs. You'll understand better once you compare. For more information, refer to the Vue Loader documentation.

Answer 8

Interesting inquiry! I encountered a similar issue and managed to find a creative solution. Excited to share it with you!

Imagine your template resembles the following:

<template>
  <div class="match">
    <div v-html="<span>hello world</span>"></div>
  </div>
</template>

Simply modify this segment:

<style scoped>
.match span {
    color: yellow;
}
</style>

compiled output: `.match span[data-v-f3f3eg9] { color: yellow; }`

to

<style scoped>
.match >>> span {
    color: yellow;
}
</style>

compiled output: `.match[data-v-f3f3eg9] span { color: yellow; }`

Observe the distinction between the two outputs. You'll understand better once you compare. For more information, refer to the Vue Loader documentation.

Using Vue.js: Is there a way to apply scoped CSS to dynamically generated HTML content?

Answer №1

Answer №2

Answer №3

Answer №4

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