<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Vue 测试实例</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.2/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body style="text-align: center;">
<div id="app" class="demo">
<input type="button" v-show="index!=1" value="上一张" @click="pre">
<input type="button" v-show="index!=60" value="下一张" @click="next">
<div id="center">
<img :src="imgSrc" height="500px" width="500px" alt="点击展开">
</div>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>
var app = new Vue({
el:"#app",
data:{
index:0,
imgSrc:"",
},
methods:{
pre:function(){
if (this.index>1) {
this.index--;
this.imgSrc="D:\\img\\"+this.index+".jpg";
}else{
alert("到头啦!!");
}
},
next:function(){
if (this.index<60) {
this.index++;
this.imgSrc="D:\\img\\"+this.index+".jpg";
}else{
alert("没有更多了!!");
}
}
},
})
</script>
</body>
</html>
图片的切换:
分别有上一张和下一张的按钮,首页没有上一张,尾页没有下一张,注意图片路径