问题
I have a ASP.Net web form that contains both text box fields and hidden fields. The hidden field values are modified dynamically using client side JavaScript. Posting the form, inspecting the values and redirecting to another page is all working as expected.
However, when I use the browser back button to display the previous page then I expect so see that ALL form fields are still populated with the values that were posted.
In IE and Firefox this is the case for both text and hidden input fields.
In Chrome this is ONLY the case for text fields. The value of hidden fields is lost.
Is it true that Chrome never repopulates dynamically set hidden form field values when navigating the browser history?
I have put a small sample together to demonstrate the problem and can provide that if required. I wanted to first ask the question to see if this is well known behaviour and something I have to accept.
回答1:
You should not rely on this behavior. It is different among browsers, even among browser versions. This behavior is not described in any standards. If you want your fields to have specific values, you can use cookies, or always make requests to the server when page loads, or use more modern methods like local storage (it is not widely supported though).
回答2:
This problem could be solved using a small trick.
The problem is Form fields with Type=hidden with Dynamically set values are not handled properly by the Chrome Browser.
So the solution is to change the type of the field to text and use some other method to hide the visible text boxes. This could be achieved by surrounding all the text boxes carrying values intended to be hidden by a DEV tag pair and assigning the style as display: none
Then on the page you wont see the text boxes carrying hidden values and it will work properly with JavaScript of the browser.
BEFORE
<input type=hidden name=item_no value=00001>
AFTER
<div style="display: none">
<input type=text name=item_no value=00001>
</div>
回答3:
I can't seem to comment, maybe my rep too low but felt this is important to mention.
I just ran into this problem myself in Opera so borrowed Sanesh Fernando's solution which worked around the hidden fields not being reinstated (Thanks Sanesh). However what caused a problem for me was that Javascript fires before the form fields are updated so if you check values with javascript as I was doing then I had to add a setTimeout to ensure Opera updated before I checked the values.
Cookies are as stated another way but what with the ridiculous EU directive on requiring cookie usage agreement from the visitor it's not a solution for me.
来源：https://stackoverflow.com/questions/4025843/chrome-doesnt-cache-hidden-form-field-values-for-use-in-browser-history