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Copy path04-多图上传预览.html
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04-多图上传预览.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>多图上传预览</title>
<style>
.upload-btn{width: 100px;height: 100px;border: 1px solid #ddd;box-sizing: border-box;position: relative;float: left;margin-right: 10px;margin-bottom: 10px;}
.upload-btn input{position: absolute;width: 100%;height: 100%;left: 0;top: 0;opacity: 0;cursor: pointer;}
.upload-btn::before{content: '';width: 50px;height: 2px;background: #ddd;position: absolute;left: 50%;top: 50%;margin-left: -25px;margin-top: -1px;}
.upload-btn::after{content: '';width: 2px;height: 50px;background: #ddd;position: absolute;left: 50%;top: 50%;margin-left: -1px;margin-top: -25px;}
.upload-item{width: 100px;height: 100px;float: left;margin-right: 10px;margin-bottom: 10px;position: relative;}
.upload-item img{width: 100px;height:100px;}
.upload-item .del{position: absolute;right: 0;top:0;background: rgba(0,0,0,.5);color: #fff;width: 20px;height: 20px;text-align: center;line-height: 20px;font-size: 18px;cursor: pointer;}
</style>
</head>
<body>
<button onclick="submitBtn(this)">提交</button>
<div class="upload-wrap">
<div class="upload-btn">
<input type="file" multiple accept="image/*" onchange="upload(this)">
</div>
</div>
<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="plugins/layui/layui.all.js"></script>
<script type="text/javascript">
var uploadFiles=[];//上传的文件
//上传图片
function upload(_this){
for(var i=0;i<_this.files.length;i++){
if(uploadFiles.length>8||_this.files.length>9){
layer.msg('最多上传9张');
return;
}
uploadFiles.push(_this.files[i]);
var reader = new FileReader();
reader.readAsDataURL(_this.files[i]);
reader.onload = function(e) {
var base64Url=e.target.result;//base64
$(_this).parents('.upload-wrap').append('<div class="upload-item">'+
'<span class="del" onclick="del(this)">×</span>'+
'<img src="'+base64Url+'">'+
'</div>');
};
}
$(_this).val('');
}
//删除图片
function del(_this){
var index=$(_this).parent('.upload-item').index()-1;
uploadFiles.splice(index,1);//删除文件
$(_this).parents('.upload-wrap').find('.upload-item').eq(index).remove();//删除元素
console.log(uploadFiles);
}
//提交
function submitBtn(_this){
var formData=new FormData();
//图片文件
if(uploadFiles.length>0){
for(var i=0;i<uploadFiles.length;i++){
formData.append('file'+i,uploadFiles[i]);//每个file参数不一样
}
}
console.log(uploadFiles);
}
</script>
</body>
</html>