How to test if an Element Exists

jQuery for Designers - screencasts and tutorials

#Tech #Screencast #Code #Video #Remy Sharp #JQuery For Designers #JQuery #JavaScript

36:27

Not many artists actually hail from Tennessee, but the scenic valleys and rolling hills of The Volunteer State are part of Dustin Lynch’s DNA. In this episode of On the Bus, Country Thunder CEO Troy Vollhoffer sits down with Dustin to discuss his journey from playing fraternity parties and weddings across the southeast to being the first country artist with a club residency at the Wynn in Las Vegas. Plus, stick around for our new segment, Thunder Strike, where Troy features upcoming festival performer Riley Green’s hit song “Damn Good Day to Leave” to give you a taste of what’s to come at Country Thunder in 2025.…

hace 16 años 7:53

MP4•Episodio en casa

A common question for beginners coming to jQuery: "Is there a function to return true or false if an element exists?" Not really, but there is a (very simple) way to find out.

30 episodios

jQuery for Designers - screencasts and tutorials

How to test if an Element Exists

jQuery for Designers - screencasts and tutorials

published hace 16 años

MP4•Episodio en casa

A common question for beginners coming to jQuery: "Is there a function to return true or false if an element exists?" Not really, but there is a (very simple) way to find out.

30 episodios

#Tech #Screencast #Code #Video #Remy Sharp #JQuery For Designers #JQuery #JavaScript

Todos los episodios

jQuery for Designers - screencasts and tutorials

1
Populate Select Boxes 15:27

hace 14 years15:27

15:27

It’s the age old (well, in webby terms) issue of how to populate one select box based on another’s selection. It’s actually quite easy compared with the bad old days, and incredibly easy with jQuery and a dash of Ajax.

jQuery for Designers - screencasts and tutorials

1
Scroll Linked Navigation 12:48

hace 15 years12:48

12:48

There are a few websites I’ve seen lately that have a left hand navigation automatically updates it’s selection based on where you’ve scrolled to on the page. This tutorial will show you exactly how to achieve just that.

jQuery for Designers - screencasts and tutorials

1
Debugging Tools 45:38

hace 15 years45:38

45:38

Most of us have to make our web pages work in The Big Five browsers, so I thought it was about time I introduce you to the debugging tools for each of those browsers with a couple of tips thrown in to the mix.

jQuery for Designers - screencasts and tutorials

1
Enabling the Back Button 16:47

hace 15 years16:47

16:47

As we build more and more Ajaxy applications, and our apps reside on a single page, the browser’s native back button can get more and more broken. This episode will show you how to re-enable the back button on your apps.

jQuery for Designers - screencasts and tutorials

1
Adding Keyboard Navigation 13:35

hace 15 years13:35

13:35

I was recently asked how keyboard navigation could be supported to move a slider backwards and forwards. I've created a few tutorials on how to create sliders and carousels but not mentioned keyboard supported navigation yet.

jQuery for Designers - screencasts and tutorials

1
Fixed Floating Elements 14:02

hace 15 years14:02

14:02

On visiting Apple’s web site an putting items in my shopping basket, I noticed (an old effect) where the shopping basket would follow me down the page. We’ll look at how to replicate the fixed floating sidebars or elements with very little jQuery.

jQuery for Designers - screencasts and tutorials

1
iPhone-like Sliding Headers 25:09

hace 16 years25:09

25:09

The iPhone has a few unique UI features, one in particular are the static headings when you’re scrolling through a list, so you know the context of the content. We’ll see how to create this effect using jQuery.

jQuery for Designers - screencasts and tutorials

1
Automatic Infinite Carousel 5:25

hace 16 years5:25

5:25

Following on from the infinite carousel, there have been a number of requests asking how to make the scrolling action automatic, so I’ve gone ahead to explain how to achieve this.

jQuery for Designers - screencasts and tutorials

1
Play School: Broken Repeating Animations 5:31

hace 16 years5:31

5:31

jQuery makes it incredibly easy to add effects to your web sites, but there’s some effects you just don’t want: the hover repeatedly to make the effect go wild!

jQuery for Designers - screencasts and tutorials

1
API: queue and dequeue 5:39

hace 16 years5:39

5:39

queue & dequeue are a pair of core data utilities that help you to add your own bespoke to animations.

jQuery for Designers - screencasts and tutorials

1
jQuery Infinite Carousel 39:48

hace 16 years39:48

39:48

With jQuery for Designer 's redesign I decided to add a scrolling carousel that worked in the same way the carousel worked on the Apple Mac ads page . This tutorial will walk through the fundamentals of the effect and how to recreate it.

jQuery for Designers - screencasts and tutorials

1
SlideDown Animation Jump Revisited 8:35

hace 16 years8:35

8:35

When using slideDown depending on the layout of your page, you could still see the jumping effect, regardless of whether you fix the padding around the element.

jQuery for Designers - screencasts and tutorials

1
BBC Radio 1 Zoom Tabs 29:55

hace 16 years29:55

29:55

Gareth Rogers asked how to achieve the effect on the latest BBC Radio 1 website, where the mouse rolls over the image block, tabs slide up and the image zooms a little to reveal more of the picture.

jQuery for Designers - screencasts and tutorials

1
API: map & grep 10:29

hace 16 years10:29

10:29

map and grep are two utilities that are extremely useful if you know how to use them, but more often that not, I see more convoluted code written to achieve the effect of these functions. Historically, I believe that John Resig was inspired by the Perl functions of the same name - which are basic building blocks of the Perl programming language. Let’s look at how you can use these functions.…

jQuery for Designers - screencasts and tutorials

1
jQuery look: Tim Van Damme 33:01

hace 16 years33:01