问题
I found a strange issue. Open a simple page in Firefox, the code is simple as below:
<html>
<body>
<textarea></textarea>
</body>
</html>
In Firefox, I type some characters in the textarea. Then I click refresh button of the browser. Surprisingly, after the page refreshed, what I typed is still there in textarea. However, if I just focus on URL bar and press ENTER key, the textarea is clear after refreshing.
I reproduced this in Firefox 3.6.12 in Linux and 3.6.3 in MacOS. And, I have only Firebug extension installed so it should NOT be due to Firefox extension.
Is this a know issue? How to make textarea clear after Refresh button is clicked?
回答1:
For textarea only:
<textarea autocomplete="off"></textarea>
For all form fields
<form autocomplete="off">
Preventing Firefox from remembering the input value on refresh with Meta tag
回答2:
It's so that your form information is kept if you accidentally navigate away from the page and then return by using the previous or next button.
回答3:
Use
<script>document.form.reset();</script>
or
onload="document.FORMNAME.reset();
which will avoid aufill on refresh.
来源：https://stackoverflow.com/questions/4263536/firefox-cache-textarea-value