首页 > 其他分享> > HTML5上传图片并预览

HTML5上传图片并预览

2020-01-11 18:01:01 作者：互联网

一个简易的实现：

<!DOCTYPE html>  
<html>  
<head>  
    <title>HTML5上传图片并预览</title>  
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
    <script src="https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js"></script>  
</head>  
<body>  
    <h3>请选择图片文件：PNG/JPG/JPEG/SVG/GIF</h3>  
    <form name="form0" id="form0">  
        <input type="file" name="file0" id="file0" accept="image/gif,image/jpeg,image/jpg,image/png,image/svg"/><br>  
        <img src="" id="img0" style="width: 20rem;height: 15rem;">
    </form>   
    <script type="text/javascript">
        $("#file0").change(function(){  
        var objUrl = getObjectURL(this.files[0]) ;//获取文件信息  
        console.log("objUrl = "+objUrl);  
            if (objUrl) {  
                  $("#img0").attr("src", objUrl);  
            }   
        });

        function getObjectURL(file) {  
            var url = null;   
            if(window.createObjectURL!=undefined) {  
                url = window.createObjectURL(file) ;  
            }else if (window.URL!=undefined) { // mozilla(firefox)  
                url = window.URL.createObjectURL(file) ;  
            }else if (window.webkitURL!=undefined) { // webkit or chrome  
                url = window.webkitURL.createObjectURL(file) ;  
            }  
            return url ;  
        }  
    </script>
</body>  
</html>

效果：

标签：undefined,预览,url,上传,window,createObjectURL,HTML5,file,objUrl
来源： https://www.cnblogs.com/lfri/p/12180633.html