<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>showImages</title>
<style type="text/css">
.float{
float:left;
width : 200px;
height: 200px;
overflow: hidden;
border: 1px solid #CCCCCC;
border-radius: 10px;
padding: 5px;
margin: 5px;
}
img{
position: relative;
}
.result{
width: 200px;
height: 200px;
text-align: center;
box-sizing: border-box;
}
#file_input{
display: none;
}
.delete{
width: 200px;
height:200px;
position: absolute;
text-align: center;
line-height: 200px;
z-index: 10;
font-size: 30px;
background-color: rgba(255,255,255,0.8);
color: #777;
opacity: 0;
transition-duration: :0.7s;
-webkit-transition-duration: 0.7s;
}
.delete:hover{
cursor: pointer;
opacity: 1;
}
</style>
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
<script type="text/javascript">
window.onload = function(){
var input = document.getElementById("file_input");
var result;
var dataArr = [];
var fd;
var oSelect = document.getElementById("select");
var oAdd = document.getElementById("add");
var oSubmit = document.getElementById("submit");
var oInput = document.getElementById("file_input");
if(typeof FileReader==='undefined'){
alert("抱歉，你的浏览器不支持 FileReader");
input.setAttribute('disabled','disabled');
}else{
input.addEventListener('change',readFile,false);
}
function readFile(){
fd = new FormData();
var iLen = this.files.length;
var index = 0;
for(var i=0;i<iLen;i++){
if (!input['value'].match(/.jpg|.gif|.png|.jpeg|.bmp/i)){
return alert("上传的图片格式不正确，请重新选择");
}
var reader = new FileReader();
reader.index = i;
fd.append(i,this.files[i]);
reader.readAsDataURL(this.files[i]);
reader.fileName = this.files[i].name;
reader.onload = function(e){
var imgMsg = {
name : this.fileName,
base64 : this.result
}
dataArr.push(imgMsg);
result = '<div class="delete">delete</div><div class="result"><img src="'+this.result+'" alt=""/></div>';
var div = document.createElement('div');
div.innerHTML = result;
div['className'] = 'float';
div['index'] = index;
document.getElementsByTagName('body')[0].appendChild(div);
var img = div.getElementsByTagName('img')[0];
img.onload = function(){
var nowHeight = ReSizePic(this);
this.parentNode.style.display = 'block';
var oParent = this.parentNode;
if(nowHeight){
oParent.style.paddingTop = (oParent.offsetHeight - nowHeight)/2 + 'px';
}
}
div.onclick = function(){
this.remove();
delete dataArr[this.index];
}
index++;
}
}
}
function send(){
var submitArr = [];
for (var i = 0; i < dataArr.length; i++) {
if (dataArr[i]) {
submitArr.push(dataArr[i]);
}
}
$.ajax({
url : 'http://39.106.182.218',
type : 'post',
data : JSON.stringify(submitArr),
dataType: 'json',
success : function(data){
console.log('返回的数据：'+JSON.stringify(data))
}
})
}
oSelect.οnclick=function(){
oInput.value = "";
$('.float').remove();
dataArr = [];
index = 0;
oInput.click();
}
oAdd.οnclick=function(){
oInput.value = "";
oInput.click();
}
oSubmit.οnclick=function(){
if(!dataArr.length){
return alert('请先选择文件');
}
send();
}
}
function ReSizePic(ThisPic) {
var RePicWidth = 200;
var TrueWidth = ThisPic.width;
var TrueHeight = ThisPic.height;
if(TrueWidth>TrueHeight){
var reWidth = RePicWidth;
ThisPic.width = reWidth;
var nowHeight = TrueHeight * (reWidth/TrueWidth);
return nowHeight;
}else{
var reHeight = RePicWidth;
ThisPic.height = reHeight;
}
}
</script>
</head>
<body>
<div class="container">
<label>请选择一个图像文件：</label>
<button id="select">(重新)选择图片</button>
<button id="add">(追加)图片</button>
<form action="" method="post" enctype="multipart/form-data">
<input type="file" id="file_input" name="image[]" multiple/>
<!--用input标签并选择type=file，记得带上multiple，不然就只能单选图片了-->
<button id="submit">提交</button>
</form>
</div>
</body>
</html>
