Vue Component Style

A Vue mixin to add style section to components.

Features

• Zero Dependency
• Tiny (~1kb gzipped)
• Simple Setup and Usage
• Nested Support
• Pseudo Selector Support
• SSR Support
• Scoped to Component

Install

npm i vue-component-style

Setup

Vue App

// Vue 2.x
import Vue from 'vue';
import VueComponentStyle from 'vue-component-style';

Vue.use(VueComponentStyle);

// Vue 3.x (added support in >=1.1.0)
import { createApp } from 'vue';
import VueComponentStyle from 'vue-component-style';

const theApp = createApp(/*...*/);
theApp.use(VueComponentStyle);

Note that You should use version >= 1.1.0 to use in Vue 3.

Nuxt App

nuxt.config.js:

module.exports = {
  modules: [
    'vue-component-style/nuxt'
  ],
}

Note that You don't need to do anything else with your webpack config or whatever.

Usage

component.vue:

<template>
  <div>
    <h1 :class="$style.title"> Title </h1>
    <div :class="$style.content">
      Content <a> Link </a>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    size: {
      type: Number,
      default: 8
    },
    color: {
      type: String,
      default: 'red'
    }
  },
  style({ className }) {
    return [
      className('title', {
        color: this.color,
        fontWeight: 'bold',
      }),
      className('content', {
        color: 'gray',
        marginBottom: `${this.size}px`,
        '& > a': {
          color: this.color,
          '&:visited': {
            textDecoration: 'underline',
          },
        },
      }),
    ];
  }
}
</script>

---

API Documentions

1 - Define Style

Function this.style(helper)

After activating VueComponentStyle, all components can have their js style section. Just like data section, you have to pass normal function that returning an Array. This function will invoke automatically with helper util object as first argument.

2 - Use Defined Styles

Object this.$style

After you defining style prop in your component, all your classes defined by style()s are accessable with $style computed object inside your component instance.

3 - Notice When Styles Updated

VueEvent 'styleChange'

styleChange event fires when your style changes and applied to DOM.

---

Helper

You can use helper() object from first parameter of style() function to defining your stylesheet. Helper object has these functions

• className()
• mediaQuery()
• keyFrames()
• custom()

Class Name

Function helper.className(name, content)

To define your scopped css class styles, use this helper function.

Param	Type	Default	Description
name	String		Name of your class. All of your defined names will be accessable via $style Object later.
content	Object	{}	Your sass-style class properties. You can also style nested.

Example

style({ className }) {
  return [
    className('customClass', {
      color: 'red',
      fontWeight: 'bold',
      borderRadius: `${this.size}px`,
      '& > div': {
        color: 'blue',
      },
    }),
  ];
}

Media Query

Function helper.mediaQuery(mediaFeature, content)

To define your customized style to different screen sizes, use this helper function.

Param	Type	Default	Description
mediaFeature	Object		Media features. Common keys on this object are 'minWidth' and 'maxWidth'.
content	Array	[]	List of className()s that you need to redefine.

Example

style({ mediaQuery, className }) {
  return [
    className('responsiveClass', {
      width: '50%',
    }),
    mediaQuery({ maxWidth: '320px' }, [
      className('responsiveClass', {
        width: '100%',
      }),     
    ]),
  ];
}

Key Frames

Function helper.keyFrames(name, content)

To define your scopped keyframes animation with specefic name, use this helper function.

Param	Type	Default	Description
name	String		Keyframes name.
content	Object		Keyframes properties. If you don't pass this prop, calculated hash name of already generated keyframes will be returns.

Example

style({ keyFrames, className }) {
  return [
    className('animatedThing', {
      color: 'blue',
      animationName: keyFrames('myAnimation'),
      animationDuration: '2s',
    }),
    keyFrames('myAnimation', {
      from: {
        color: 'blue',
      },
      to: {
        color: 'red',
      },
    ]),
  ];
}

Custom

Function helper.custom(rule, content)

To define your custom css style sections, use this helper function. Note that styles generated by this helper function are not scopped!

Param	Type	Default	Description
rule	String		Rule name.
content	Object		Style properties.

Example

style({ custom }) {
  return [
    custom('@font-face', {
      fontFamily: 'MyFont',
      src: 'url("/my-font.woff")',
    }),
  ];
}