Databases
StackOverflow2013
Postsdbo
PO
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PO
    primarykey
    data
    text
    <p><s>I'm not sure if some properties create less overhead while animating than others but</s> I would be very interested if someone posts some good information on that subject. That being said I do know of a couple things that can help performance.</p> <p>Setting <code>position : absolute</code> removes the element from the regular flow of the page and therefore does not require the entire page to be redrawn when it is animated. <code>position : relative</code> will force a redraw of the whole page since ancestor and descendant elements can be affected.</p> <p>Also, you can throttle the <code>scroll</code> event and still achieve 30fps:</p> <pre><code>var scroll_ok = true; setInterval(function () { scroll_ok = true; }, 33);//33ms is 30fps, you can try changing this to something larger for better performance $(window).bind('scroll', function () { if (scroll_ok === true) { scroll_ok = false; //now run your code to animate with respect to scroll } }); </code></pre> <p><strong>UPDATE :: 2014-08-26</strong></p> <p>Things have changed since this was originally written. A few quick notes:</p> <ul> <li><p>Modern browsers now attempt to GPU accelerate the painting of elements given a specific set of properties (<code>opacity</code> and <code>transform</code> off the top of my head). Using these properties can greatly improve performance over others like <code>top</code>/<code>left</code> (which also require redrawing the page in more instances than using a <code>transform</code>).</p></li> <li><p><code>will-change</code> is a new property just being picked up by browsers. You can basically set a list of properties that are likely to change so the browser can optimize the property change ahead of time.</p></li> <li><p><code>requestAnimationFrame</code> has a robust polyfill and good modern browser support. This is a much better way to smoothly animate elements without creating tons of "chunk" as the browser will render as it can.</p></li> </ul>
    singulars
    1. This table or related slice is empty.
    1. POjQuery Parallax / Scroll Events Performance
      singulars
      1. PTQuestion
    1. PTAnswer
    1. USJasper
    1. USJasper
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PO
      1. This table or related slice is empty.
      1. VTUpMod
    1. COAhhh, Thank you! I'm definitely going to utilize the scroll throttling. Might play around with the values to see what works best for this project. Another tip, although it's widely known about now, is to use the "inview" plugin, thus severely limiting the number of elements being animated at any given point.
      singulars
      1. PO
      1. USPhilip McLaughlin
    2. COI created a jQuery plugin that animates elements within certain parameters. The `scroll` event handler checks to see if the `viewport` is in the proper location to animate an element, if it is then it gets animated, otherwise no. It's as easy as checking if the current scroll position is within a range set for an element.
      singulars
      1. PO
      1. USJasper
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload