vue-side-catalog

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v1.0

A vue-based side catalog component.

online example

Install

npm install vue-side-catalog -S

Start

<template>
 <div id="app">
   <div id="demo">
      <h1>JavaScript</h1>
      <h2>History</h2>
      <h3>Creation at Netscape</h3>
      <p>
        The Mosaic web browser was released in 1993. 
        As the first browser with a graphical user interface accessible to non-technical people, 
        it played a prominent role in the rapid growth of the nascent World Wide Web
      </p>
      <h3>Adoption by Microsoft</h3>
      <h3>The rise of JScript</h3>
      <h2>Trademark</h2>
      <h2>Website client-side usage</h2>
   </div>
  <side-catalog 
    class="catalog"
    v-bind="catalogProps"
  ></side-catalog>
  </div>
</template>
import SideCatalog from 'vue-side-catalog'
import 'vue-side-catalog/lib/vue-side-catalog.css'
export default {
  components: {
    SideCatalog,
  },
  data() {
    return {
      catalogProps:{
         container: '#demo',
      },
    };
  },
}
<style>
  .catalog {
    position: fixed;
    top: 50px;
    right: 50px;
  }
</style>

Note： The container attribute is required and specifies the container of the article.

The effect is as follows：

Custom catalog labels

By default, the component will use the <h> tag of a direct subset of thecontainer element as the catalog content., The corresponding rule is:

• h2 => First level catalog

• h3 => Secondary catalog

• h4 => Tertiary catalog

• h5 => Fourth level catalog

To modify this rule, you can use the levelList attribute. The default value of this attribute is["h2", "h3", "h4", "h5"]corresponding to the above rule

Note: Custom title tags currently only support html tags that are a direct subset of the container element

 data(){
    return {
      catalogProps:{
        levelList: ["h1", "h2", "h3", "h4", "h5"], // make h1 a first-level catalog
        // levelList: ["h3", "h1", "p", "span"], // specifying different tags as directories
      },
    };
  },

h1 as first-level catalog:

Scrolling inside the container

You can use the innerScroll attribute to specify the scroll event to listen for container, if you do not specify this attribute, the default is to listen for Window

 data(){
    return {
      catalogProps:{
        container: '#demo',
        innerScroll: true,
        height: 'calc(100% - 20px)'
      },
    };
  },

Note：If the catalog is too long, you need to set a fixed height for the catalog to automatically scroll.You can use the height parameter, or add css directly from the outside

The effect is as follows:：

online example

Customize catalog style

You can customize each row of catalog or icon through slot

Custom icon

Iconfont is used here

  <side-catalog 
    class="catalog"
    v-bind="catalogProps"
  >
    <template #default="{level, isActive}">
      <i :class="['iconfont', isActive ? 'icon-smile' : 'icon-normal']"></i>
    </template>
  </side-catalog>

online example

---

Use the iconLeft parameter to align all icons to the left, and lineLeft to adjust the left line position

  <side-catalog 
    class="catalog"
    v-bind="catalogProps"
  >
    <template #default="{level, isActive}">
      <i :class="['line-style', isActive ? 'line-style--active' : '']"></i>
    </template>
  </side-catalog>

 data(){
    return {
      catalogProps:{
        container: "#demo",
        iconLeft: true,
        lineLeft: 0
      },
    };
  },

.line-style {
  display: inline-block;
  height: 20px;
  width: 3px;
  background: transparent;
}
.line-style--active {
  background: currentColor;
}

online example

Customize each line of catalog

  <side-catalog 
    class="catalog"
    v-bind="catalogProps"
  >
    <template #row="{level, isActive, title}">
      // ...
    </template>
  </side-catalog>

Props

Name	Type	Default	Description
container	String	-	(necessary)Specify the article's container
innerScroll	Boolean	false	Whether to scroll inside the container
activeColor	String	#006bff	Color when in current catalog
levelGap	Number	20	Offsets of different levels of directories
iconLeft	Boolean	false	Whether the icon of each level of catalog is left aligned and does not follow the offset
lineLeft	Number	22	The left value of the left line of the catalog
lineShow	Boolean	true	Whether to show the left line of the catalog
title	String	-	Title at the top of the table of contents
height	String	-	The height of the catalog can be set to the value of height in css.When the catalog is too long and exceeds the height, it will automatically scroll to the current catalog.Of course, you can also set the height directly in the parent component
watch	Boolean	false	Whether to enable dom monitoring, if there is a dom change in container, it will recalculate the offsetTop of each level of catalog.For example, the expansion and collapse of the folded panel need to be recalculated
levelList	Array	["h2", "h3", "h4", "h5"]	Assign tags to each level of catalog

Methods

Name	Parameters	Description
initActive	-	Make the first line of the catalog active
setTopList	-	Calculate the offsetTop of each level of the catalog. When the deviation between the article and the catalog does not correspond, you can call this method to recalculate

Slot

Name	Description
default	Customize the icon of each line of catalog, the parameter is {level, isActive}
row	Customize each line of catalog, the parameter is {level, isActive, title}