Self resize and center a window using javascript (no jquery) on page load

This is not something we'd normally do but we're trying load a video into the blank window opened by a clickTag (from a banner ad) - and make it feel like a modal window as much as possible.

Is it possible to use javascript to self-resize the blank window opened by the clickTag and center it on the screen?

We can't apply anything to the link that is clicked so...
Everything has to self-run as the page loads
If possible, it would be nice to not see the browser tabs and address bar
We're not loading jquery
Are browser security alerts a potential problem?

Essentially the user clicks to watch a video and we'd like them to watch the video without them feeling like they've gone to a completely different site.

So far I can resize the window but can't figure out how to center it with:

<script language="javascript">

  function resizeVideoPage(){
    resizeTo(400,390);
    window.focus();
  }
</script> 

// Then...

<body onload="resizeVideoPage();"></body>

Any pointers in the right direction would be much appreciated.

Cheers

Ben

I personally would advice against Popups an Javascript window manipulation. (due to Popup Blockers, Javascript errors, ...) A Overlay would probably be better.

Here would be an other Solution.

File one(Link should point to this Helper, that opens the Video HTML)

<html>
<body>
<script>
    var windowWidth = 400;
    var windowHeight = 200;
    var xPos = (screen.width/2) - (windowWidth/2);
    var yPos = (screen.height/2) - (windowHeight/2);
    window.open("popup.html","POPUP","width=" 
    + windowWidth+",height="+windowHeight +",left="+xPos+",top="+yPos);
</script>
</body>
</html>

File Two (Video that closes Helper)

<html>
<body onload="window.opener.close();">
</body>
</html>

Got it working with:

<script language="javascript">

  function resizeVideoPage(){
    var width = 600;
    var height = 400;
    window.resizeTo(width, height);
    window.moveTo(((screen.width - width) / 2), ((screen.height - height) / 2));      
  }
</script>

// Then...

<body onload="resizeVideoPage();"></body>

来源：https://stackoverflow.com/questions/14866418/self-resize-and-center-a-window-using-javascript-no-jquery-on-page-load

标签

javascript

resize

window

center