提示：您可以先修改部分代碼再運行
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="content-type" content="text/html; charset=gb2312" /><title></title><script language="javascript">function checkimgsize(imgvalue){ var oimg=new image(); oimg.src=imgvalue; oimg.onreadystatechange = function () { if (oimg.readystate == "complete") { alert(oimg.filesize); } } return false; //if((oimg.filesize)/1024).tofixed(1)>430) return true; //else return false;}</script></head><body><table> <tr> <td colspan="2" align="center" > </td> </tr> <tr> <td width="72" > 圖片上傳： </td> <td width="455"> </td> </tr> <tr> <td > </td> <td> <input id="file1" type="file" onchange="checkimgsize(this.value);"/> </td> </tr> <tr> <td colspan="2" align="center"> </td> </tr> </table></body></html>
提示：您可以先修改部分代碼再運行
