Does the color of the item change as it gets older?

How can I smoothly transition a color as it ages using a dynamic time scale? I want to calculate the age based on the difference in time rather than triggering an animation after an event.

I aim for a seamless gradient transition between two colors over approximately 10 minutes while maintaining state even after reloading.

Thank you!

EDIT: The plan is to receive a timestamp from the server, use that along with the current time to calculate elapsed time. Next, I need to determine the progress on a flexible scale (could range from 10 to 30 minutes). Finally, I want to assign the correct color and continue aging smoothly.

I am trying to find the best method to resume this animation midway and fade through every possible color seamlessly without chunking it into steps.

javascriptjqueryhtmlcss

Answer №1

To achieve tweening with jqueryui without persistence, you can follow this simple example:

http://jsfiddle.net/MeqVZ/

If you want the transition to occur over ten minutes, change 6000 to 600000 (time is in milliseconds).

Adding persistence will vary depending on how you want to maintain it. Do you intend to save data to a database, set a cookie, or use web/dom storage?

Incorporating persistence involves calculating the current color based on the remaining time. For instance, if you are fading from color #00 to #FF and have used 284 seconds out of 600 (10 minutes), calculate the new color value as demonstrated below:

color_init = parseInt("00", 16);
color_final = parseInt("FF", 16);
yourNum = Math.ceil((color_init-color_final)*284/600.0);
initial_color = yourNum.toString(16);

Repeat this process for the red, green, and blue components of your color.

Apply this initial color value on the page and animate it with the remaining time between 600 and 284 seconds.

EDIT: Updated fiddle to automatically start animating and enable mid-way starting point (assuming the server value can be retrieved).

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