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Sliding elements

From: jQuery Essential Training

Video: Sliding elements

The sliding effect is yet another way that jQuery gives you to reveal or hide page elements. These functions are not for sliding things around on the screen, just doing some generic movement. This is for showing and hiding elements but using a sliding effect. jQuery provides functions for sliding elements up or down, as well as toggling the slide animation based upon whether things are hidden or showing.

Sliding elements

The sliding effect is yet another way that jQuery gives you to reveal or hide page elements. These functions are not for sliding things around on the screen, just doing some generic movement. This is for showing and hiding elements but using a sliding effect. jQuery provides functions for sliding elements up or down, as well as toggling the slide animation based upon whether things are hidden or showing.

And you've probably seen this effect before in web pages, where you click an Option button and things kind of slide into views seemingly from thin air, and that's how this effect is achieved in jQuery. The slideDown function allows me to specify the speed at which the slide animation happens and there is an optional callback function that will be called when the slide is completed, and the same thing for slideUp. I can specify the speed and speed can either be a string like slow or normal or fast or I can specify a number of milliseconds that I want the animation to happen over.

And SlideToggle is the same idea. It just toggles whether things are sliding up or sliding down based upon whether they are already showing. Let's take a look at the sliding examples. I am going to jump over to the code. So here is the file in the browser and I've got the big blue div right here. And I've have got some buttons that trigger some behavior. So it's already visible, so lets slide it up, and see that it slides out of view, and sliding down makes it visible, and when I try to hit Slide Down again, nothing happens because it's already visible and similarly Slide Up there is nothing once it's hidden.

The Toggle behavior however is, well, it just simply takes it from whatever state it's currently in and brings it to the opposite state. So let's take a look at the code, and see how that happens. I am going to open this up in my editor, so let's scroll down really quick before we see the code. Here are the buttons that are controlling the behavior. You can see these IDs on them, and this is the div right here and the div has a style applied to it, which sets its initial appearance, these are all the styles I have on my div.

So let's scroll back up. So, when the page loads and the document is ready, I set up some event handlers. So, for the slideUp button, I assign a click() function that calls the slideUp function on the div and for the slideDown button I call the slideDown function. And for toggle the same idea, I call the slideToggle. So, let's have a little bit of fun with this. We can take out the normal here, and I can put in something kind of slow like 4 seconds, so 4000 milliseconds is 4 seconds.

And I can also define a function that will be called when the slide up is complete. So I am just going to display an alert that says slide complete, and again, you would do this if you had some UI that you wanted to manipulate or otherwise control when the effect was done with. So, now I am going to save and jump to the browser again. Now, I am going to refresh. You can see that the Toggle Slide still works pretty smoothly, but when I Slide Up, it's going to slide up very slowly over 4 seconds and then show my alert.

So, let's make sure that works in Firefox as well. Open this in Firefox, just to prove it's cross-browser. So, here is the same file. You can see toggling works, and I am going slide up very slowly over 4 seconds and there is the alert. So, that's a quick summary of the jQuery sliding functions and using those functions, you can easily slide elements into and out of view.

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This video is part of

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jQuery Essential Training

49 video lessons · 97162 viewers

Joe Marini
Author

 
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  1. 2m 52s
    1. Welcome
      1m 9s
    2. Using the exercise files
      1m 43s
  2. 17m 37s
    1. What is jQuery?
      5m 19s
    2. Downloading and installing jQuery
      2m 20s
    3. Creating a simple jQuery-enabled page
      7m 12s
    4. Overview of features in jQuery
      2m 46s
  3. 59m 57s
    1. Overview of selectors and filters
      2m 9s
    2. Using basic jQuery selectors
      9m 6s
    3. Using basic jQuery filters
      8m 35s
    4. Using jQuery attribute filters
      6m 7s
    5. Child, visibility, and content filters
      9m 59s
    6. Form selectors and filters
      9m 3s
    7. Traversing documents
      9m 1s
    8. Understanding jQuery statement chaining
      1m 42s
    9. Practical example 1: Annotating page links
      4m 15s
  4. 47m 16s
    1. Creating, getting, and setting content
      5m 53s
    2. Manipulating attributes
      5m 43s
    3. Inserting content
      4m 57s
    4. Wrapping, replacing, and removing content
      5m 27s
    5. Working with CSS
      6m 19s
    6. Associating data with page elements
      9m 30s
    7. Practical example 2: Automatic TOC generator
      9m 27s
  5. 33m 6s
    1. Understanding the jQuery event handling features
      2m 4s
    2. Binding and unbinding events
      6m 23s
    3. Convenient event helper methods
      4m 40s
    4. Using the jQuery event object
      6m 21s
    5. Using miscellaneous event features
      4m 38s
    6. Practical example 3: Table striping and highlighting
      9m 0s
  6. 28m 45s
    1. Hiding and showing elements
      5m 23s
    2. Fading elements in and out
      4m 2s
    3. Sliding elements
      4m 3s
    4. Creating custom animations
      5m 58s
    5. Practical example 4: Image rotator
      9m 19s
  7. 25m 30s
    1. Introduction to jQuery UI
      3m 40s
    2. Exploring the jQuery UI widgets
      5m 24s
    3. Exploring the jQuery UI effects
      3m 58s
    4. Using the jQuery UI ThemeRoller
      4m 11s
    5. Downloading and installing jQuery UI
      8m 17s
  8. 47m 49s
    1. Overview of the sample web site
      3m 50s
    2. Using the accordion widget
      9m 14s
    3. Creating an image rotator
      10m 22s
    4. Building hover tooltips
      7m 26s
    5. Making an image selector
      9m 30s
    6. Using the Resizable effect
      7m 27s
  9. 30m 2s
    1. Working with Asynchronous JavaScript and XML (AJAX)
      10m 8s
    2. Using AJAX helpers
      4m 34s
    3. Understanding AJAX data types
      10m 14s
    4. Using global AJAX event handlers
      5m 6s
  10. 20s
    1. Goodbye
      20s

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