js --- 上传图片预览 

<!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>

　　

posted @ 2018-12-26 10:54  蔚京霖  阅读(159)  评论(0)  编辑  收藏  举报