js实现上传多张图片

来源：互联网发布：淘宝买书靠谱吗编辑：程序博客网时间：2024/06/05 18:28

<!doctype html>

<html>
<head>
<meta charset="utf-8">
<meta name="viewport"
content="width=device-width,initial-scale=1,user-scalable=no" />

<script src="jquery-1.8.3.min.js"></script>

<script type="text/javascript">
$(document).ready(function() {

var obj = document.getElementById("u_file");

$("#u_file").change(function () {
var imgShow=document.getElementById("imgShow");

var imgLable= document.createElement("img");

var deleteLable= document.createElement("img");

imgLable.setAttribute("src",getObjectURL(obj));
deleteLable.setAttribute("src","deleteBtn.png");
deleteLable.className="deleteImgStyle";

imgLable.className="imgStyle";

if(imgShow.childNodes.length>5){
alert("最多只能上传三张照片");
return null;
}
imgShow.appendChild(deleteLable);
imgShow.appendChild(imgLable);
deleteLable.setAttribute("id","idImag"+Math.random());


deleteImg();

})


function deleteImg(){


$(".deleteImgStyle").click(function(){

console.log(this.id);
var obj=document.getElementById(this.id);

obj.nextSibling.remove();
this.remove();

})


}

function getObjectURL(node) {
var imgURL = "";
try {
var file = null;
if (node.files && node.files[0]) {
file = node.files[0];
} else if (node.files && node.files.item(0)) {
file = node.files.item(0);
}
//Firefox 因安全性问题已无法直接通过input[file].value 获取完整的文件路径
try {
//Firefox7.0
imgURL = file.getAsDataURL();
//alert("//Firefox7.0"+imgRUL);
} catch (e) {
//Firefox8.0以上
imgURL = window.URL.createObjectURL(file);
//alert("//Firefox8.0以上"+imgRUL);
}
} catch (e) { //这里不知道怎么处理了，如果是遨游的话会报这个异常
//支持html5的浏览器,比如高版本的firefox、chrome、ie10
if (node.files && node.files[0]) {
var reader = new FileReader();
reader.onload = function (e) {
imgURL = e.target.result;
};
reader.readAsDataURL(node.files[0]);
}
}
return imgURL;
}
})

</script>

<style type="text/css">

.imgStyle{
border: 1px solid #ddd;
width:100px;
height:100px;
float: left;
line-height: 1;
margin-left: 5px;
overflow: hidden;
}
.deleteImgStyle{
position:relative;
left:110px;
top:-8px;
border: 0px solid #ddd;
width:15px;
height:15px;
float: left;

overflow: hidden;

}

</style>

</head>

<body>


<label for="u_file"><img src="deleteBtn.png" width="50px;" height="50px;"/></label>
<input type="file" name="file" id="u_file" multiple="multiple" style="display:none"/>

<div id="imgShow">

</div>


</div>
</body>
</html>

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