HTML5 上传前预览

2015/02/26 38806

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    <!DOCTYPE html>  
    <html>  
    <head>  
    <title>HTML5上传图片预览</title>  
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
    <script src="http://www.codefans.net/ajaxjs/jquery-1.6.2.min.js"></script>  
    </head>  
    <body>  
    <h3>请选择图片文件：JPG/GIF</h3>  
    <form name="form0" id="form0" >  
    <input type="file" name="file0" id="file0" multiple="multiple" /><br><img src="" id="img0" >  
    </form>  
    <script>    
    $("#file0").change(function(){  
        var objUrl = getObjectURL(this.files[0]) ;  
        console.log("objUrl = "+objUrl) ;  
        if (objUrl) {  
            $("#img0").attr("src", objUrl) ;  
        }  
    }) ;  
    //建立一個可存取到該file的url  
    function getObjectURL(file) {  
        var url = null ;   
        if (window.createObjectURL!=undefined) { // basic  
            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>