updating grafic

[alin19]

i have made a grafic; but i must refresh the page to update that grafic, can i make it to generate new data without refreshing the page?

[rhodesa]

How do you call/generate the graphic?

[Zhadus]

I would imagine you'd need to use javascript for that.

[alin19]

geting data from a database; time and prize variation;

 

 

i have another program that updates the database

[rhodesa]

If you have a PHP script generating a graphic, and you refer to it like so:

 

<img id="random_pic" src="/images/random.php" />

 

You can update it with JavaScript like so:

 

<script>
function updateImage ( ) {
  var date = new Date;
  document.getElementById('random_pic').src = "/images/random.php?_="+date.getTime();
}
</script>
<img id="random_pic" src="/images/random.php" />
<input type="button" value="Update Image" onclick="updateImage();" />

[rhodesa]

the getTime() piece is to make sure it's a unique URL. this will keep the browser from caching the image