jsp not reloaded in frame

[Raj Ohadi]

I posted a thread in javascript for <iframe>. Now I am facing a page not reloaded problem inside the frame.

my.html:

<div id="iframe" style {visibility: hidden; .....} >
<iframe src="/myapp/app.jsp"/>
</div>

// put a "show me hidden page" button here

app.jsp:

<input type="radio" ..>
<input type="radio" ..>

I have a "show hidden page" button, when user clicks the button, it invokes a javascript to set the <div> as visible. What I found was -- First time clicking the button, the hidden jsp shows up, initially all radio button were unchecked as designed , then I clicked the 2nd radio button. Then I click on some other irrelated stuff on the main page (my.html) but not inside the app.jsp. Then I clicked the "show hidden page" again, the page poped up again, but to my surprise, it did not show me the original jsp (i.e. all radio button should be unchecked), it showed me my modified page --- it showed me that 2nd radio button was checked, i.e. it cached what I clicked around on app.jsp, instead of reloading the app.jsp from server.

How to fix this issue ?

Thanks,

[Bear Bibeault]

Moved to the HTML forum as this has nothing to do with JSP.

Just hiding and showing will not cause the iframe to reload. Why would you think that it would? It's simply a display setting.

To reload the iframe reset its src attribute.

[Raj Ohadi]

It is a content display panel and we only want to show user when they choose to click on the link to see. Howevere, we want the content to be reloaded and refreshed from server everytime when they click to see. Could you be more specific how we can achieve that ?

[Bear Bibeault]

Bear Bibeault wrote:To reload the iframe reset its src attribute.

[Raj Ohadi]

sorry, maybe i am just stupid. I don't know how i can reset the "src" attribute. This "src" URL (a jsp) is a fixed URL. I am not supposed to change it. I just want it to be reloaded as fresh when this iframe displays. I really don't know ho this can be "reset". Thanks.

[Bear Bibeault]

var myIFrame = document.getElementById('myIFrameId');
myIFrame.src = myIFrame.src;

You might need to add some random value to the query string to defeat any caching.

[Raj Ohadi]

In my "show hidden page" button's onClick() function I made the hidden iframe visible but its content turned not be reloaded everytime when I hit the "show hidden page" button.

After I saw Bear's post, I added

document.getElementById('myFrame').src='..../my.jsp'; 

into onClick() function. But it did not work. It did not show me the reloaded original jsp page when I clicked the button. Note: java]document.getElementById('myFrame').src='..../my.jsp'; the content src points to is same as what I put for src inside the <iframe> element. I just repeated it in onClick() hoping it reloads the page.

[Eric Pascarello]

The page in the iframe is probably cached. That is what GET requests do when you do not set proper headers.

You can also refresh the iframe via

document.getElementById('myIFrameId').window.location.reload(true);

Eric

[Raj Ohadi]

maybe this is a stupid idea --- What if I create an action which forward to "my.jsp" and I use

<iframe src="/../myaction">

This may force the server render a jsp everytime.

[Bear Bibeault]

Did you try the reload() method Eric suggested?

Also, have you checked to make sure that response has the proper no-cache headers?

[Raj Ohadi]

Bear, I am sorry to say that it did not work for me.

As I said, I have a click button, when it clicks it shows the hidden iFrame.

onClick="document.getElementById("myFrameId").window.location.reload(true); document.getElementById('myFrameId').focus(); return false;"

The iFrame embeds a jsp page which includes some elements. Every time after I click something on the jsp, it "memorize' it, i.e. when I click somewhere else on the main page and then click back the button, it pops up the iframe with the jsp I already clicked around instead of a fresh jsp. Did I use the syntax correctly ??

Thanks.

[Raj Ohadi]

finally that "reload" javscript syntax worked for me. Thanks !