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js简单上传图片预览功能-简单粗暴
js简单上传图片预览功能
<!DOCTYPE html> <html> <head> <title>js简单上传图片预览功能</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" width="150" height="150" style="display:none;"> </form> </body> </html> <script type="text/javascript"> $("#file0").change(function(){ var objUrl = getObjectURL(this.files[0]) ; console.log("objUrl = "+objUrl) ; if (objUrl) { $("#img0").attr("src", objUrl) ; $("#img0").show(); } }) ; //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>
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