vue-waterfall-easy 2.x

This is a vue component that contains waterfall flow layout and infinite scroll loading
Compared to other implementations,there is no need to specify the width and height of the image in the returned data
It is because of the second item that the image is preloaded and then layout
Responsive layout,adapt mobile
Simple to use

1. Usage

1.1 Installation

npm install vue-waterfall-easy --save

1.2 es6 import

import vueWaterfallEasy from 'vue-waterfall-easy'

export default {
  name: 'app',
  components: {
    vueWaterfallEasy
  }
}

1.3 scripts import

download vueWaterfallEasy.js

<script src="path/to/vue/vue.js"></script>
<script src="path/to/vueWaterfallEasy.js"></script>

new Vue({
  el: '#app',
  components: {
    vueWaterfallEasy
  }
})

1.4 Supports require.js and sea.js module import

2. Basic example

html

<vue-waterfall-easy :imgsArr="imgsArr" @scrollReachBottom="getData"></vue-waterfall-easy>

If imgArr is a replacement update, the data returned by the getData method new request overwrites the original data.

If imgArr is an incremental update, the data returned by the new request of getData method is merged with the original data. At this time, it is not recommended to use the replacement update, which will waste performance. The following example is an incremental update.

import vueWaterfallEasy from './vue-waterfall-easy/vue-waterfall-easy.vue'
import axios from 'axios'
export default {
  name: 'app',
  data() {
    return {
      imgsArr: [],
      group: 0,// request param
    }
  },
  components: {
    vueWaterfallEasy
  },
  methods: {
    getData() {
      // In the real environment,the backend will return a new image array based on the parameter group.
      // Here I simulate it with a stunned json file.
      axios.get('./static/mock/data.json?group=' + this.group)
        .then(res => {
          this.imgsArr = this.imgsArr.concat(res.data)
          this.group++
        })
    },
  },
  created() {
    this.getData()
  }
}

more detail see App.vue file

3. Props

props	type	default	description
width	Number	-	Container width（px）,default is 100% relative parent element width,Due to the responsiveness,all its parent's width must be 100% relative to the browser window at this time,See the example after the table If it is fixed width, you must set the width prop , not just its parent element set fixed width
height	Number\|String	-	Container height, the default unit `px` for the value of the `Number` type, the unit can be specified when the value is the type of `String` When you do not specify the `height` value, the default is relative to the height of the parent element 100%, then the parent element must have a height
gap	Number	20	[Pc] space between pictures(px)
mobileGap	Number	8	[Mobile] space between pictures(px)
imgsArr	Array	[]	required Data used to render the waterfall stream Each array element is an object and must have `src` and `href` attributes. The `src` attribute represents the SRC attribute of the picture The `href` attribute represents the link to click to jump if your key is not `src` and `href`, you can use the two properties of `srcKey` and `hrefKey` to do the key value replacement.
srcKey	String	'src'	When the key value of your picture address is not `src`, you can use this property to replace it.
hrefKey	String	'href'	When the key value of your picture address is not `href`, you can use this property to replace it.
imgWidth	Number	240	The width of the picture（px）
maxCols	Number	5	Waterfall shows the maximum number of columns
linkRange	String	'card'	Identify click to trigger jump link range value: 'card' Whole card range 'img' image range 'custom' Customize the link range through slots
isRouterLink	Boolean	false	Render the a tag when the value is false Render the router-link component when the value is true
reachBottomDistance	Number	0	The distance(px) from the bottom of the container when the scrolling triggers the scrollReachBottom event
loadingDotCount	Number	3	The number of default loading animation dots
loadingDotStyle	Object	null	The style object of the small dots in the default loading element
loadingTimeOut	Number	500	Preloading events less than 500ms milliseconds do not display loading animations,increasing the user experience
cardAnimationClass	String	'default-card-animation'	the animation className for the card
enablePullDownEvent	Boolean	false	enable the drop-down event

4. Event

event name	description
scrollReachBottom	When the scroll bar scrolls to the bottom,it is used to trigger a request for new image data
preloaded	Trigger every time image preloading is completed
click	Trigger when the card is clicked,look at an example under the table
imgError	Trigger when img load error
pullDownMove	The mobile terminal takes effect, touches the pull-down event, and the first parameter can obtain the Y-axis moving distance difference, which is often used for pull-down refresh.
pullDownEnd	The mobile terminal takes effect, and the touch pull-down event is raised by the finger, which is often used for pull-down refresh.
click event demo

<vue-waterfall-easy :imgsArr="imgsArr" @scrollReachBottom="getData" @click="clickFn"></vue-waterfall-easy>

  clickFn(event, { index, value }) {
    // Prevent a tag jump
    event.preventDefault()
    // Do it only when you click on the image
    if (event.target.tagName.toLowerCase() == 'img') {
      console.log('img clicked',index, value)
    }
  }

5. methods

5.1 waterfallOver

When the rolling load data is over, manual invoking will remove the scroll event.

this.$refs.waterfall.waterfallOver()

more detail see App.vue

6. slot

6.1 default slot

Custom picture description element

parameter

parameterpar	description
props.index	The index of the image in the data array,starting from 0
props.value	The value of imgsArr item

<vue-waterfall-easy :imgsArr="imgsArr" @scrollReachBottom="getData">
  <div class="img-info" slot-scope="props">
    <p class="some-info">picture index: {{props.index}}</p>
    <p class="some-info">{{props.value.info}}</p>
  </div>
</vue-waterfall-easy>

6.2 slot="loading"

Custom loading element

<div slot="loading" slot-scope="{isFirstLoad}">
  <div slot="loading" v-if="isFirstLoad">first-loading...</div>
  <div v-else="v-else">loading...</div>
</div>

6.3 slot="waterfall-head"

Waterfall container head slot

<vue-waterfall-easy :imgsArr="imgsArr" @scrollReachBottom="getData">
  <div slot="waterfall-head">waterfall-head</div>
</vue-waterfall-easy>

6.4 slot="waterfall-over"

when waterfallOver method is called，this slot will show

<vue-waterfall-easy :imgsArr="imgsArr" @scrollReachBottom="getData">
  <div slot="waterfall-over">waterfall-over</div>
</vue-waterfall-easy>

7. Adapted mobile

Don't forget to add following code in index.html <head>

<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no">

yangwb1/vue-waterfall-easy