一个好用的弹幕效果插件，亲测有效，插件地址：弹幕动起来
<!-- 弹幕组件 -->
<view class="danmu">
<lff-barrage ref="lffBarrage" :maxTop="120" :minTop="10"></lff-barrage>
</view>
danmuList :[
'一帆风顺',
'二龙腾飞',
'三羊开泰',
'四季平安',
'五福临门',
'六六大顺',
'七星高照',
'八方来财',
'九九同心',
'十全十美！',
'新年快乐'
]
onLoad() {
let index = 0
setInterval(() => {
index++
if(index < this.danmuList.length){
this.$refs.lffBarrage.add({
item: this.danmuList[index]
});
}
},1000)
}
lff-barrage子组件内容
父级元素：
position: absolute在父级内部弹
position: fixed; 全屏弹幕
<template>
<view style="overflow: hidden;position: absolute;width: 100%;height: 100%;pointer-events: none; top: 0;">
<view class="danmu-li" v-for="(item,index) in listData" :class="item.type" :style="item.style" :key="index">
<view class="danmu-inner">
<view class="user-box">
<view class="user-status cl1">
{
{item.item}}
</view>
</view>
</view>
</view>
</view>
</template>
<script>
export default {
props: {
//rightToLeft leftToRight leftBottom
type: {
type: String,
default: 'rightToLeft'
},
minTime: {
type: Number,
default: 4
},
maxTime: {
type: Number,
default: 9
},
minTop: {
type: Number,
default: 0
},
maxTop: {
type: Number,
default: 240
},
hrackH: {
//轨道高度
type: Number,
default: 40
},
noStacked:{
//不允许堆叠(暂不可用)
type:Array,
default(){
return []
}
}
},
data() {
return {
listData: []
}
},
mounted() {
this.hrackNum = Math.floor((this.maxTop - this.minTop) / this.hrackH);
},
methods: {
add(obj) {
let data = {
item: obj.item,
id:Date.parse(new Date()),
time: Math.ceil(Math.floor(Math.random() * (this.maxTime - this.minTime + 1) + this.minTime)),
type: this.type
}
if (this.type === 'leftBottom') {
let objData = {
item: data.item,
type: 'leftBottomEnter',
style: {
transition: `all 0.5s`,
animationDuration: `0.5s`,
transform: `translateX(0%)`,
bottom: `${
this.minTop}px`
}
}
let listLen = this.listData.length;
let hrackNum = this.hrackNum;
for (let i in this.listData) {
if(this.listData[i].status === 'reuse'){
//重用
this.$set(this.listData,i,objData);
}else if(this.listData[i].status === 'reset'){
//重置
this.listData[i].style.transition = 'none';
this.listData[i].style.bottom = 0;
this.listData[i].status = 'reuse';
}else if(this.listData[i].status === 'recycle'){
//回收
this.listData[i].type = 'leftBottomExit';
this.listData[i].status = 'reset';
}else{
this.listData[i].style.bottom = parseInt(this.listData[i].style.bottom) + this.hrackH + 'px';
}
if(parseInt(this.listData[i].style.bottom) >= (this.maxTop - this.hrackH) && this.listData[i].status !== 'reset'){
//需要回收
this.listData[i].status = 'recycle';
}
}
if(listLen < hrackNum + 2){
this.listData.push(objData);
}
} else if (this.type === 'rightToLeft' || this.type === 'leftToRight') {
let objData = this.horStacked(data);
for (let i in this.listData) {
if (this.listData[i].delTime <= Date.parse(new Date())) {
this.repaint(i, objData.type);
objData.type = '';
this.$set(this.listData, i, objData);
return
}
}
this.listData.push(objData);
}
},
horStacked(data){
return {
item: data.item,
type: this.type,
style: {
animationDuration: `${
data.time}s`,
top: `${
Math.ceil(Math.random() * (this.maxTop - this.minTop + 1) + this.minTop)}px`
},
delTime: Date.parse(new Date()) + data.time * 1200
}
},
repaint(index, type) {
setTimeout(() => {
this.listData[index].type = type;
}, 100)
}
}
}
</script>
<style>
</style>
<style lang="scss">
@keyframes leftBottomEnter {
0% {
transform: translateY(100%);
opacity: 0;
}
100% {
transform: translateY(0%);
opacity: 1;
}
}
@keyframes leftBottomExit {
0% {
transform: translateY(0%);
opacity: 1;
}
100% {
transform: translateY(-200%);
opacity: 0;
}
}
@keyframes leftToRight {
0% {
transform: translateX(-100%);
}
100% {
transform: translateX(100%);
}
}
@keyframes rightToLeft {
0% {
transform: translateX(100%);
}
100% {
transform: translateX(-100%);
}
}
.danmu-li {
position: absolute;
width: 100%;
transform: translateX(100%);
animation-timing-function: linear;
&.leftBottomEnter {
animation-name: leftBottomEnter;
}
&.leftBottomExit{
animation-name: leftBottomExit;
animation-fill-mode: forwards;
}
&.rightToLeft {
animation-name: rightToLeft;
}
&.leftToRight {
animation-name: leftToRight;
}
.danmu-inner {
display: inline-block;
.user-box {
display: flex;
background: rgba(0, 0, 0, 0.3);
border-radius: 32rpx;
align-items: center;
padding: 10rpx 30rpx;
.user-status {
white-space: nowrap;
font-size: 26rpx;
font-weight: 400;
color: rgba(255, 255, 255, 1);
}
}
}
}
</style>
如何使用
import lffBarrage from '@/components/lff-barrage/lff-barrage.vue'
components:{
lffBarrage},
methods:{
colrdo(){
//插入一条弹幕
this.$refs.lffBarrage.add({
item:'你好呀小伙子'});
}
}
<lff-barrage ref="lffBarrage"></lff-barrage>