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简单的头像上传代码.html
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简单的头像上传代码.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<title></title>
<script src="http://www.jq22.com/jquery/jquery-1.10.2.js"></script>
<script>
//图片上传预览 IE是用了滤镜。
function previewImage(file)
{
var MAXWIDTH = 90;
var MAXHEIGHT = 90;
var div = document.getElementById('preview');
if (file.files && file.files[0])
{
div.innerHTML ='<img id=imghead onclick=$("#previewImg").click()>';
var img = document.getElementById('imghead');
img.onload = function(){
var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
img.width = rect.width;
img.height = rect.height;
//img.style.marginLeft = rect.left+'px';
img.style.marginTop = rect.top+'px';
}
var reader = new FileReader();
reader.onload = function(evt){img.src = evt.target.result;}
reader.readAsDataURL(file.files[0]);
}
else //兼容IE
{
var sFilter='filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=scale,src="';
file.select();
var src = document.selection.createRange().text;
div.innerHTML = '<img id=imghead>';
var img = document.getElementById('imghead');
img.filters.item('DXImageTransform.Microsoft.AlphaImageLoader').src = src;
var rect = clacImgZoomParam(MAXWIDTH, MAXHEIGHT, img.offsetWidth, img.offsetHeight);
status =('rect:'+rect.top+','+rect.left+','+rect.width+','+rect.height);
div.innerHTML = "<div id=divhead style='width:"+rect.width+"px;height:"+rect.height+"px;margin-top:"+rect.top+"px;"+sFilter+src+"\"'></div>";
}
}
function clacImgZoomParam( maxWidth, maxHeight, width, height ){
var param = {top:0, left:0, width:width, height:height};
if( width>maxWidth || height>maxHeight ){
rateWidth = width / maxWidth;
rateHeight = height / maxHeight;
if( rateWidth > rateHeight ){
param.width = maxWidth;
param.height = Math.round(height / rateWidth);
}else{
param.width = Math.round(width / rateHeight);
param.height = maxHeight;
}
}
param.left = Math.round((maxWidth - param.width) / 2);
param.top = Math.round((maxHeight - param.height) / 2);
return param;
}
</script>
</head>
<body>
<div id="addCommodityIndex">
<!--input-group start-->
<div class="input-group row">
<div class="col-sm-3">
<label>商品图片</label>
</div>
<div class="col-sm-9 big-photo">
<div id="preview">
<img id="imghead" border="0" src="img/photo_icon.png" width="90" height="90" onclick="$('#previewImg').click();">
</div>
<input type="file" onchange="previewImage(this)" style="display: none;" id="previewImg">
<!--<input id="uploaderInput" class="uploader__input" style="display: none;" type="file" accept="" multiple="">-->
</div>
</div>
<!--input-group end-->
</div>
</body>
</html>