Vue.js仿微信聊天窗口展示組件功能

# install dependencies
npm install
# serve with hot reload at localhost:8080
npm run dev
# build for production with minification
npm run build

function toEmotion(text, isNoGif){
 var list = ['微笑', '撇嘴', '色', '發呆', '得意', '流淚', '害羞', '閉嘴', '睡', '大哭', '尷尬', '發怒', '調皮', '呲牙', '驚訝', '難過', '酷', '冷汗', '抓狂', '吐', '偷笑', '愉快', '白眼', '傲慢', '饑餓', '困', '驚恐', '流汗', '憨笑', '大兵', '奮斗', '咒罵', '疑問', '噓', '暈', '折磨', '衰', '骷髏', '敲打', '再見', '擦汗', '摳鼻', '鼓掌', '糗大了', '壞笑', '左哼哼', '右哼哼', '哈欠', '鄙視', '委屈', '快哭了', '陰險', '親親', '嚇', '可憐', '菜刀', '西瓜', '啤酒', '籃球', '乒乓', '咖啡', '飯', '豬頭', '玫瑰', '凋謝', '示愛', '愛心', '心碎', '蛋糕', '閃電', '炸彈', '刀', '足球', '瓢蟲', '便便', '月亮', '太陽', '禮物', '擁抱', '強', '弱', '握手', '勝利', '抱拳', '勾引', '拳頭', '差勁', '愛你', 'NO', 'OK', '愛情', '飛吻', '跳跳', '發抖', '慪火', '轉圈', '磕頭', '回頭', '跳繩', '揮手', '激動', '街舞', '獻吻', '左太極', '右太極', '嘿哈', '捂臉', '奸笑', '機智', '皺眉', '耶', '紅包', '雞'];
 if (!text) {
 return text;
 }
 text = text.replace(/\[[\u4E00-\u9FA5]{1,3}\]/gi, function(word){
 var newWord = word.replace(/\[|\]/gi,'');
 var index = list.indexOf(newWord);
 var backgroundPositionX = -index * 24
 var imgHTML = '';
 if(index<0){
 return word;
 }
 if (isNoGif) {
 if(index>104){
 return word;
 }
 imgHTML = `<i class="static-emotion" style="background:url(https://res.wx.qq.com/mpres/htmledition/images/icon/emotion/default218877.gif) ${backgroundPositionX}px 0;"></i>`
 } else {
 var path = index>104 ? '/img' : 'https://res.wx.qq.com/mpres/htmledition/images/icon';
 imgHTML = `![](${path}/emotion/${index}.gif)`
 }
 return imgHTML;
 });
 return text;
}
Vue.directive('emotion', {
 bind: function (el, binding) {
 el.innerHTML = toEmotion(binding.value)
 }
});

[{
 direction: 2, //為2表示微信主人發出的消息，1表示聯系人
 id: 1, //根據這個來排序消息
 type: 1, //1為文本，2為圖片
 content: '你好!![呲牙]', //當type為1時這里是文本消息，當type2為2時這里要存放圖片地址；后續會支持語音的顯示
 ctime: new Date().toLocaleString() //顯示當前消息的發送時間
},
{
 direction: 1,
 id: 2,
 type: 1,
 content: '你也好。[害羞]',
 ctime: new Date().toLocaleString()
}]

//主文件，對wxChat的用法做示例
<template>
<wxChat 
 :data="wxChatData"
 :showShade="false"
 contactNickname="簡叔"
 :getUpperData="getUpperData"
 :getUnderData="getUnderData"
 :ownerAvatarUrl="ownerAvatarUrl"
 :contactAvatarUrl="contactAvatarUrl"
 :width="420">
</wxChat>
</template>
<script>
import wxChat from './components/wxChat.vue'
export default {
 name: 'app',
 data () {
 return {
 upperTimes: 0,
 underTimes: 0,
 upperId: 0,
 underId: 6,
 ownerAvatarUrl: './src/assets/avatar1.png',
 contactAvatarUrl: './src/assets/avatar2.png',
 wxChatData: [{
 direction: 2,
 id: 1,
 type: 1,
 content: '你好!![呲牙]',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 1,
 id: 2,
 type: 1,
 content: '你也好。[害羞]',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 2,
 id: 3,
 type: 1,
 content: '這是我的簡歷頭像：',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 2,
 id: 4,
 type: 2,
 content: './src/assets/wyz.jpg',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 1,
 id: 5,
 type: 1,
 content: '你開心就好。[微笑]',
 ctime: new Date().toLocaleString()
 }]
 }
 },
 components:{wxChat},
 methods:{
 //向上滾動加載數據
 getUpperData(){
 var me = this;
 // 這里為模擬異步加載數據
 // 實際上你可能要這么寫:
 // return axios.get('xxx').then(function(result){
 // return result; //result的格式需要類似下面resolve里面的數組
 // })
 return new Promise(function(resolve){
 setTimeout(function(){
 //模擬加載完畢
 if(me.upperTimes>3){
 return resolve([]);
 }
 //加載數據
 resolve([{
 direction: 2,
 id: me.upperId-1,
 type: 1,
 content: '向上滾動加載第 ' + me.upperTimes +' 條！',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 1,
 id: me.upperId-2,
 type: 1,
 content: '向上滾動加載第 ' + me.upperTimes +' 條！',
 ctime: new Date().toLocaleString()
 }]
 )
 }, 1000);
 me.upperId= me.upperId+2;
 me.upperTimes++;
 })
 },
 getUnderData(){
 var me = this;
 //意義同getUpperData()
 return new Promise(function(resolve){
 setTimeout(function(){
 //模擬加載完畢
 if(me.underTimes>3){
 return resolve([]);
 }
 //加載數據
 resolve(
 [{
 direction: 1,
 id: me.underId+1,
 type: 1,
 content: '向下滾動加載第 ' + me.underTimes +' 條！',
 ctime: new Date().toLocaleString()
 },
 {
 direction: 2,
 id: me.underId+2,
 type: 1,
 content: '向下滾動加載第 ' + me.underTimes +' 條！',
 ctime: new Date().toLocaleString()
 }]
 )
 }, 1000);
 me.underId = me.underId+2;
 me.underTimes++;
 })
 }
 }
}
</script>
<style>
*{
 margin: 0;
 padding: 0;
}
#app {
 font-family: 'Avenir', Helvetica, Arial, sans-serif;
 -webkit-font-smoothing: antialiased;
 -moz-osx-font-smoothing: grayscale;
 text-align: center;
 color: #2c3e50;
 margin-top: 60px;
}
h1, h2 {
 font-weight: normal;
}
ul {
 list-style-type: none;
 padding: 0;
}
li {
 display: inline-block;
}
</style>