利用Vue+ElementUi实现评论功能

前言

这两天在用vue重构之前写的一个社区博客项目，之前评论的样式和效果都差强人意，所以仿照掘金重写了一个评论功能（但不是完全照搬模仿）

在写完这个功能后，由心觉得Vue真的非常好用。

话不多说，先上效果图

代码

html代码：

<template>
<div>
<div v-clickoutside=\”hideReplyBtn\” @click=\”inputFocus\” class=\”my-reply\”>
<el-avatar class=\”header-img\” :size=\”40\” :src=\”myHeader\”></el-avatar>
<div class=\”reply-info\” >
<div
tabindex=\”0\”
contenteditable=\”true\”
id=\”replyInput\”
spellcheck=\”false\”
placeholder=\”输入评论…\”
class=\”reply-input\”
@focus=\”showReplyBtn\”
@input=\”onDivInput($event)\”
>
</div>
</div>
<div class=\”reply-btn-box\” v-show=\”btnShow\”>
<el-button class=\”reply-btn\” size=\”medium\” @click=\”sendComment\” type=\”primary\”>发表评论</el-button>
</div>
</div>
<div v-for=\”(item,i) in comments\” :key=\”i\” class=\”author-title reply-father\”>
<el-avatar class=\”header-img\” :size=\”40\” :src=\”item.headImg\”></el-avatar>
<div class=\”author-info\”>
<span class=\”author-name\”>{{item.name}}</span>
<span class=\”author-time\”>{{item.time}}</span>
</div>
<div class=\”icon-btn\”>
<span @click=\”showReplyInput(i,item.name,item.id)\”><i class=\”iconfont el-icon-s-comment\”></i>{{item.commentNum}}</span>
<i class=\”iconfont el-icon-caret-top\”></i>{{item.like}}
</div>
<div class=\”talk-box\”>
<p>
<span class=\”reply\”>{{item.comment}}</span>
</p>
</div>
<div class=\”reply-box\”>
<div v-for=\”(reply,j) in item.reply\” :key=\”j\” class=\”author-title\”>
<el-avatar class=\”header-img\” :size=\”40\” :src=\”reply.fromHeadImg\”></el-avatar>
<div class=\”author-info\”>
<span class=\”author-name\”>{{reply.from}}</span>
<span class=\”author-time\”>{{reply.time}}</span>
</div>
<div class=\”icon-btn\”>
<span @click=\”showReplyInput(i,reply.from,reply.id)\”><i class=\”iconfont el-icon-s-comment\”></i>{{reply.commentNum}}</span>
<i class=\”iconfont el-icon-caret-top\”></i>{{reply.like}}
</div>
<div class=\”talk-box\”>
<p>
<span>回复 {{reply.to}}:</span>
<span class=\”reply\”>{{reply.comment}}</span>
</p>
</div>
<div class=\”reply-box\”>

</div>
</div>
</div>
<div v-show=\”_inputShow(i)\” class=\”my-reply my-comment-reply\”>
<el-avatar class=\”header-img\” :size=\”40\” :src=\”myHeader\”></el-avatar>
<div class=\”reply-info\” >
<div tabindex=\”0\” contenteditable=\”true\” spellcheck=\”false\” placeholder=\”输入评论…\” @input=\”onDivInput($event)\” class=\”reply-input reply-comment-input\”></div>
</div>
<div class=\” reply-btn-box\”>
<el-button class=\”reply-btn\” size=\”medium\” @click=\”sendCommentReply(i,j)\” type=\”primary\”>发表评论</el-button>
</div>
</div>
</div>
</div>
</template>

JS代码如下

我把模拟的数据写在了data里面，显得js有点长。如果要更改数据的格式的话，记得也要改Html不然会出错。

}
]
},
{
name:\’Taylor Swift\’,
id:19891221,
headImg:\’https://ae01.alicdn.com/kf/H94c78935ffa64e7e977544d19ecebf06L.jpg\’,
comment:\’我发行了我的新专辑Lover\’,
time:\’2019年9月16日 18:43\’,
commentNum:1,
like:5,
inputShow:false,
reply:[
{
from:\’Lana Del Rey\’,
fromId:19870621,
fromHeadImg:\’https://ae01.alicdn.com/kf/Hd60a3f7c06fd47ae85624badd32ce54dv.jpg\’,
to:\’Taylor Swift\’,
toId:19891221,
comment:\’新专辑和speak now 一样棒！\’,
time:\’2019年9月16日 18:43\’,
commentNum:25,
like:5,
inputShow:false

}
]
},
{
name:\’Norman Fucking Rockwell\’,
id:20190830,
headImg:\’https://ae01.alicdn.com/kf/Hdd856ae4c81545d2b51fa0c209f7aa28Z.jpg\’,
comment:\’Plz buy Norman Fucking Rockwell on everywhere\’,
time:\’2019年9月16日 18:43\’,
commentNum:0,
like:5,
inputShow:false,
reply:[]
},
]
}
},
directives: {clickoutside},
methods: {
inputFocus(){
var replyInput = document.getElementById(\’replyInput\’);
replyInput.style.padding= \”8px 8px\”
replyInput.style.border =\”2px solid blue\”
replyInput.focus()
},
showReplyBtn(){
this.btnShow = true
},
hideReplyBtn(){
this.btnShow = false
replyInput.style.padding= \”10px\”
replyInput.style.border =\”none\”
},
showReplyInput(i,name,id){
this.comments[this.index].inputShow = false
this.index =i
this.comments[i].inputShow = true
this.to = name
this.toId = id
},
_inputShow(i){
return this.comments[i].inputShow
},
sendComment(){
if(!this.replyComment){
this.$message({
showClose: true,
type:\’warning\’,
message:\’评论不能为空\’
})
}else{
let a ={}
let input = document.getElementById(\’replyInput\’)
let timeNow = new Date().getTime();
let time= this.dateStr(timeNow);
a.name= this.myName
a.comment =this.replyComment
a.headImg = this.myHeader
a.time = time
a.commentNum = 0
a.like = 0
this.comments.push(a)
this.replyComment = \’\’
input.innerHTML = \’\’;

}
},
sendCommentReply(i,j){
if(!this.replyComment){
this.$message({
showClose: true,
type:\’warning\’,
message:\’评论不能为空\’
})
}else{
let a ={}
let timeNow = new Date().getTime();
let time= this.dateStr(timeNow);
a.from= this.myName
a.to = this.to
a.fromHeadImg = this.myHeader
a.comment =this.replyComment
a.time = time
a.commentNum = 0
a.like = 0
this.comments[i].reply.push(a)
this.replyComment = \’\’
document.getElementsByClassName(\”reply-comment-input\”)[i].innerHTML = \”\”
}
},
onDivInput: function(e) {
this.replyComment = e.target.innerHTML;
},
dateStr(date){
//获取js 时间戳
var time=new Date().getTime();
//去掉 js 时间戳后三位，与php 时间戳保持一致
time=parseInt((time-date)/1000);
//存储转换值
var s;
if(time<60*10){//十分钟内
return \’刚刚\’;
}else if((time<60*60)&&(time>=60*10)){
//超过十分钟少于1小时
s = Math.floor(time/60);
return s+\”分钟前\”;
}else if((time<60*60*24)&&(time>=60*60)){
//超过1小时少于24小时
s = Math.floor(time/60/60);
return s+\”小时前\”;
}else if((time<60*60*24*30)&&(time>=60*60*24)){
//超过1天少于30天内
s = Math.floor(time/60/60/24);
return s+\”天前\”;
}else{
//超过30天ddd
var date= new Date(parseInt(date));
return date.getFullYear()+\”/\”+(date.getMonth()+1)+\”/\”+date.getDate();
}
}
},
}
</script>