<!doctype html public "-//w3c//dtd html 4.01//en" "http://www.w3.org/tr/html4/strict.dtd"> <html> <head> <title>File Input</title> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <style> body{font-size:13px;} .box{border:1px solid #eee;background:#ffe;padding:10px 30px;margin:10px;} dt{font-weight:bold;} dt,img,textarea{margin:8px 0;} em{color:#f00; font-style:normal;} span{color:#999;} .ft{color:#999;font-size:11px;text-align:right} </style> </head> <body> <h2>在不同浏览器中获取File Input的value</h2> <div class="box"> <input type="file" name="foo" id="foo" size="60" /> <input type="button" value="Show Value" onclick="alert(document.getElementById('foo').value)" /> <input type="button" value="Show Value in FF3" onclick="alert(getValueFF('foo'))" /> <input type="button" value="Show Value in IE8" onclick="alert(getValueIE8('foo'))" /> </div> <div class="box"> <dl> <dt>Firefox 2.x, IE6, IE7</dt> <dd>在本地及远端都可以取得完整地址(包括路径及文件名)</dd> </dl> <dl> <dt>Firefox 3.0</dt> <dd>在本地及远端都<em>不能</em>取得完整地址,只能获得文件名</dd> </dl> <dl> <dt>IE8, IE7(IE8模拟)</dt> <dd>在本地可以取得完整地址(包括路径及文件名),在远端<em>不能</em>取得完整地址,只能获得文件名</dd> </dl> <span>* 本地:localhost</span> </div> <div class="box"> <h3>如何在Firefox3下取得完整路径</h3> <p> 第一步:打开“about:config”页面,查找“signed.applets.codebase_principal_support”属性,将其值设置为true。 </p> <p> 第二步:在javascript中采用以下代码进行获取:<br /> <textarea style="width:800px;height:300px;"> function getValueFF(id){ var ip = document.getElementById(id); if (ip.files) { //ffx3 - try to have access to full path try { netscape.security.PrivilegeManager.enablePrivilege( 'UniversalFileRead' ) } catch (err) { //need to set signed.applets.codebase_principal_support to true } }; return ip.value; } </textarea> </p> <p> 经过以上步骤,在Firefox3下获取file input的value时,会弹出一個Internet Security的对话框,点击“Allow”将可以获取完整value。<br /> <span>资料:<a href="https://bugzilla.mozilla.org/show_bug.cgi?id=143220" target="_blank" >https://bugzilla.mozilla.org/show_bug.cgi?id=143220</a></span> </p> </div> <div class="box"> <h3>如何在IE8下取得完整路径</h3> <p>方法一:使用selection.createRange <br /> <textarea style="width:800px;height:150px;"> function getValueIE8(id){ var ip = document.getElementById(id); ip.select(); return document.selection.createRange().text; } </textarea> </p> <p>方法二:引用:<a href="https://bugzilla.mozilla.org/attachment.cgi?id=328849" target="_blank" >https://bugzilla.mozilla.org/attachment.cgi?id=328849</a></p> </div> <script language="JavaScript">
function getValueFF(id){ var ip = document.getElementById(id); if (ip.files) { //ffx3 - try to have access to full path try { netscape.security.PrivilegeManager.enablePrivilege( 'UniversalFileRead' ) } catch (err) { //need to set signed.applets.codebase_principal_support to true } }; return ip.value; } function getValueIE8(id){ var ip = document.getElementById(id); ip.select(); return document.selection.createRange().text; } </script> </body> </html>