目录
vue学习09 图片切换
-
定义图片数组:imgList:[]，列表数据使用数组保存
-
添加图片索引:index
-
绑定src属性:使用v-bind，v-bind指令可以设置元素属性，比如src
-
图片切换逻辑:按下按钮++
-
切换显示状态：使用v-show，v-show和v-if都可以切换元素的显示状态，频繁切换用v-show
练习代码为：
html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>图片切换</title>
<link rel="stylesheet" href="css/index.css">
</head>
<body>
<div id="mask">
<div class="center">
<h2 class="title"><img src="https://pic.cnblogs.com/avatar/1369308/20180722204252.png" width="16" height="16"alt="">小飞的壁纸库</h2>
<img :src="imgList[index]" alt="">
<a href="javascript:void(0)"
@click="prev"
class="left"
v-show = "index>0">
<img src="images/prev.png" alt="">
</a>
<a href="javascript:void(0)"
@click="next"
class="right"
v-show = "index<imgList.length-1">
<img src="images/next.png" alt="">
</a>
</div>
</div>
<script src="js/vue.js"></script>
<script>
var app = new Vue({
el:"#mask",
data:{
imgList:[
"images/01.jpg",
"images/02.jpg",
"images/03.jpg",
"images/04.jpg",
"images/05.jpg",
"images/06.jpg",
"images/07.jpg",
"images/08.jpg",
"images/09.jpg",
"images/10.jpg",
],
index:0
},
methods:{
prev(){
this.index--;
},
next(){
this.index++;
}
}
});
</script>
</body>
</html>
css:
* {
margin: 0;
padding: 0;
}
html,
body,
#mask {
100%;
height: 100%;
}
#mask {
background-color: #c9c9c9;
position: relative;
}
#mask .center {
position: absolute;
background-color: #fff;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
padding: 10px;
}
#mask .center .title {
position: absolute;
display: flex;
align-items: center;
height: 56px;
top: -61px;
left: 0;
padding: 5px;
padding-left: 10px;
padding-bottom: 0;
color: rgba(175, 47, 47, 0.8);
font-size: 26px;
font-weight: normal;
background-color: white;
padding-right: 50px;
z-index: 2;
}
#mask .center .title img {
height: 40px;
margin-right: 10px;
}
#mask .center .title::before {
content: "";
position: absolute;
0;
height: 0;
border: 65px solid;
border-color: transparent transparent white;
top: -65px;
right: -65px;
z-index: 1;
}
#mask .center > img {
display: block;
700px;
height: 458px;
}
#mask .center a {
text-decoration: none;
45px;
height: 100px;
position: absolute;
top: 179px;
vertical-align: middle;
opacity: 0.5;
}
#mask .center a :hover {
opacity: 0.8;
}
#mask .center .left {
left: 15px;
text-align: left;
padding-right: 10px;
border-top-right-radius: 10px;
border-bottom-right-radius: 10px;
}
#mask .center .right {
right: 15px;
text-align: right;
padding-left: 10px;
border-top-left-radius: 10px;
border-bottom-left-radius: 10px;
}
运行效果为：
