<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<!--<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>-->
<script type="text/javascript" src="../js/vue.js"></script>
</head>
<body>
<div id="hdcms">
<li v-for="(v,k) in comments">
{{v.id}} - {{v.content}}
<button v-on:click="remove(k)">删除</button>
</li>
<textarea v-model="current_content" cols="30" rows="10"></textarea><br>
<button v-on:click="push('end')">发表到后面</button>
<button v-on:click="push('pre')">发表到前面</button>
<br>
<button v-on:click="del('last')">删除最后一条评论</button>
<button v-on:click="del('first')">删除第一条评论</button>
<br>
<button v-on:click="sort()">按照编号排序</button>
<button v-on:click="reverse()">反转顺序</button>
<br>
<!--按输入的内容筛选出需要的内容-->
<input type="text" v-on:keyup.enter="search" v-model="search_content">
<li v-for="(v,k) in comments">
{{v.id}} - {{v.content}}
<button v-on:click="remove(k)">删除</button>
</li>
</div>
<script>
var app = new Vue({
el: '#hdcms',
data: {
//搜索内容
search_content:'',
//当前用户输入内容
current_content: '',
comments: [
{id: 2, content: 'HDPHP'},
{id: 4, content: 'HDCMS'},
{id: 1, content: '后盾人'},
{id: 3, content: '向军老师'},
]
},
methods: {
search(){
//filter是循环comments里的内容,逐条按下面的规则匹配
this.comments = this.comments.filter((item)=>{
<!--按输入的内容筛选出需要的内容-->
console.log(this.search_content);
var reg = new RegExp(this.search_content,'i'); //i不区分大小写
return reg.test(item.content); //返回能匹配上的数据
})
},
sort(){
this.comments.sort(function (a, b) {
return a.id > b.id;
})
},
reverse(){
this.comments.reverse();
},
remove(k){
this.comments.splice(k, 1);
},
push(type){
var id = this.comments.length+1;
var content = {id:id,content: this.current_content}
switch (type) {
case 'end':
this.comments.push(content);
break;
case 'pre':
this.comments.unshift(content);
break;
}
this.current_content = '';
},
del(type){
switch (type) {
case 'last':
this.comments.pop();
break;
case 'first':
this.comments.shift();
break;
}
}
}
});
</script>
</body>
</html>
效果:
