js 上传图片预览
css
.gjimg li{
float:left;
width:265px;
margin-left:100px;
height:283px;
overflow:hidden;
}
.gjimg li span{
font-size:14px;
color:#000;
margin-left:65px;
cursor:pointer;
}
.gjimg li .afile{
width:230px;
height: 230px;
line-height: 230px;
position: relative;
cursor: pointer;
color: #000;
font-size:16px;
text-align:center;
background: #e5e5e5;
border: 1px solid #d4d4d4;
border-radius: 1px;
overflow: hidden;
display: inline-block;
*display: inline;
*zoom: 1
}
.gjimg li .afile input{
position: absolute;
font-size: 100px;
right: 0;
top: 0;
opacity: 0;
filter: alpha(opacity=0);
cursor: pointer;
width:230px;
height: 230px;
}
#xmtanimg{
width:232px;
height:232px;
position:relative;
top:-232px;display:none;
}
if (typeof filereader == 'undefined') {
document.getelementbyid("xmtandiv").innerhtml = "
当前不支持filereader接口
"; //使选择控件不可操作 document.getelementbyid("xdatanfileimg").setattribute("disabled", "disabled"); } function xmtanuploadimg(obj) { var file = obj.files[0]; console.log(obj);console.log(file); console.log("file.size = " + file.size); //file.size 单位为byte var reader = new filereader(); //读取文件过程方法 reader.onloadstart = function (e) { console.log("开始读取...."); } reader.onprogress = function (e) { console.log("正在读取中...."); } reader.onabort = function (e) { console.log("中断读取...."); } reader.onerror = function (e) { console.log("读取异常...."); } reader.onload = function (e) { console.log("成功读取...."); var img = document.getelementbyid("xmtanimg"); img.style="display:block;"; img.src = e.target.result; //或者 img.src = this.result; //e.target == this } reader.readasdataurl(file); } 
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