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1.实战: 武林高手在线相册:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>在线相册管理</title>
</head>
<body>
<style>
.warp {
width: 400px;
height: auto;
background-color: #efefef;
border: 3px double gray; <!-- double 双实线 -->
color: #363636;
border-radius: 2%;
}
.warp .header {
padding: 15px;
}
.warp .header h2 {
text-align: center;
}
.add {
width: 100px;
height: 30px;
border: none;
cursor: pointer;
background-color: skyblue;
color: white;
}
.add:hover {
background-color: orange;
font-size: 0.95rem;
}
.main {
overflow: hidden;
}
.main ul {
padding: 0;
margin: 0;
}
.main ul li {
list-style-type: none;
float: left;
margin-left: 20px;
margin-bottom: 10px;
width: 150px;
height: 200px;
text-align: center;
}
.main ul li button {
margin: 3px;
border: none;
border-radius: 5%;
background-color: lightgreen;
}
.main ul li button:hover {
background-color: orange;
color: white;
cursor: pointer;
}
</style>
<div class="warp">
<div class="header">
<p>
<label for="img_url">输入图片地址</label>
<input type="file" name="img_url" id="img_url" placeholder="图片地址">
</p>
<p>
图片类型:
<input type="radio" id="rect" name="border" value="0"><label for="rect">直角</label>
<input type="radio" id="radius" name="border" value="10%"><label for="rect">圆角</label>
<input type="radio" id="circle" name="border" value="50%"><label for="rect">圆形</label>
</p>
<p>是否添加阴影:
<select name="shadow" id="">
<option value="0">不添加</option>
<option value="1">添加</option>
</select>
</p>
<p><button class="add">添加图片</button></p>
<div class="main">
<ul>
</ul>
</div>
</div>
</div>
<script src="jquery-3.3.1.js"></script>
<script>
$('button.add').on('click',function () {
//获取图片相关信息
img_url = $('#img_url').val();
if (img_url.length === 0) {
alert('请选择一张图片');
$('#img_url').focus();
return false;
}
//获取图片基本特征
//获取图片外观
img_url = 'http://php.io/0918/images/'+ img_url.split('\\')[2];
let img_type = $(':radio:checked').val();
console.log(img_type);
//是否添加阴影
let shadow = 'none';
if ($(':selected').val() === '1') {
shadow = '3px 3px 3px #666';
}
//2. 创建图片并添加到页面中
let img = $('<img>')
.prop('src',img_url)
.width(150)
.height(150)
.css({
'border-radius': img_type,
'box-shadow' : shadow
});
let before = $('<button></button>').text('前移');
let after = $('<button></button>').text('后移');
let remove = $('<button></button>').text('删除');
let contaier = $('<li>');
contaier.append(img,before,after,remove);
contaier.appendTo('ul');
//为3个操作添加功能
//前移功能
before.click(function () {
let current = $(this).parent();
let prev = current.prev();
prev.before(current);
})
//后移功能
after.click(function () {
let current = $(this).parent();
let next = current.next();
next.after(current);
})
//删除功能
remove.click(function () {
if (confirm('确认删除吗?')) {
$(this).parent().remove();
}
return fasle;
})
})
</script>
</body>
</html>点击 "运行实例" 按钮查看在线实例
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