如何在文本框中删除自动完成功能

Question

I need to remove autocomplete in all the textbox with in my page so I have given <input name="txt_username" id="txt_username" type="text" value="" autocomplete="off" /></dd></dl>

But it's not working does anyone know this?

Answer 1

Autocomplete, unless you're doing something crazy with AJAX, is a client-side thing and you can't always control it like that.

Since autocomplete works by caching your previous entries for a specific input text name, many banks randomly generate the input text name at each form page load but keep track of what is generated either somewhere else in a hidden input element or on the server side.

So instead of

<input name="txt_username" id="txt_username" type="text" value="" autocomplete="off" />

It might be something like

<input type="text" name="f6Lx571p" id="txt_username"/>
<input type="hidden" name="username_key" value="f6Lx571p" />

And the server-side code adjusted accordingly. For example, PHP code might have looked like:

<?php
$user = $_POST['txt_username'];
...

but it would have to be changed to something like:

<?php
$user = $_POST[$_POST['username_key']];
...

Its a bit annoying, but it works.