<!DOCTYPE html>
<html>
<head>
<title>图片上传预览功能</title>
</head>
<body>
<input id='inp' type="file" name="">
<img src="" id="img">
</body>
<script type="text/javascript">
var dom_inp = document.getElementById('inp');
var imgs = document.getElementById('img');
var img_url,imgSrc;
var window_url;
var filereads = new FileReader();
dom_inp.onchange = function(e){
// 只能设定 c:/
img_url = e.target.value.split("\");
imgSrc = 'C:/Users/Administrator/Desktop/' + img_url[2];
if(imgSrc.indexOf('.jpg') != -1 || imgSrc.indexOf('png') != -1){
imgs.src= imgSrc;
}else{
alert('错误的图片格式');
}
// 正确显示
function geturl(file){
window_url = window.webkitURL.createObjectURL(file)
return window_url;
}
imgs.src = geturl(this.files[0]);
}
</script>
</html>