Easy-to-follow video tutorials help you learn software, creative, and business skills.Become a member

Wrapping, replacing, and removing content

From: jQuery Essential Training

Video: Wrapping, replacing, and removing content

In this lesson, we are going to see how to use jQuery for wrapping, replacing, and removing content. Up until now, we have seen how to insert and manipulate some content, but now we are going to do a little bit of additional operations. So, in addition to inserting content, jQuery has a bunch of functions for doing some additional operations like wrapping content in the page, replacing it, copying it, removing it, all that great stuff. So here is the list of functions that you use in order to do that. And as you can see there is a half-a- dozen functions just for wrapping the content. So, let's take a look at those. The Wrap functions basically takes matched elements and wraps them inside something else. So, in this case for example the Wrap function will take each one of the elements on the matched set that you are calling the Wrap function on, and place them inside the HTML that you specify here. So, for example if I was calling the Wrap function on a whole bunch of images, and I passed the String, like DIV inside here, then each one of the images will be wrapped inside it's own separate DIV. Similarly, the Wrap Element works pretty much the same way. Each one of the elements inside the matched set that this is being called on, will be wrapped inside the element that I specify here. The wrapAll works pretty similarly although what it does is rather than wrapping each one of the individually matched elements into it's own wrapper. It will take all of the elements inside the matched set and place them in either the HTML that I am specifying here, or the element. And finally, the wrapInner functions will wrap the inside trial contents of each matched element, including text within either HTML or the DOM element that specify here assuming that the DOM element that I am passing is allowed to have children inside of it. So, for example Images can't have child elements inside them. So that wouldn't work. If I call wrapInner on an ul tag and I had a whole bunch of allies, then all those allies will be wrapped inside whatever I passed in as this HTML or this HTML or this element. So that's wrapping you can also replace. So the replaceWith function, you give it some content, and it will replace all of the matched elements in the result set with whatever content you specify here. And content either be HTML or a series of DOM elements. And the replaceAll basically replaces the elements that are matched by the selector with the matched elements. So, this selector here is going to be used to find which should be replaced by the all the elements that are being called on. And the last couple of functions are some pretty convenient functions, Empty basically removes all the child nodes from all the elements that are in the set, and you are calling it on. Remove just removes all the matched elements from the DOM. So, what you do is you write your jQuery selector, then you Call, Remove and then all those elements taken out the document. Then the Clone function makes copies. So, this Clone function clones the matched DOM elements and then selects all the clones. This version here which takes a Boolean argument, if you pass True then it will clone not only the elements, but it will also copy all the event handlers, whereas this one will not. Okay so that's a trip down that function set. Let's take a look at some examples in the code. I am going to open up my wrapping_start file right here. The same document we have been working on. The list is here paragraphs, and so on. Let's do a couple of experiments. So let's wrap all the paragraph tabs, and let's wrap each one into a DIV who's style has been set to color:red. So all the text inside those DIVs should be red. We need to put that in a tag. So, let's do that and then let's close the DIV off. Okay, so let's try that out, go to the browser and see what happens. So, you can see that the paragraphs two and four. The ones that did not have classes set on them, have now changed to Red text. And that's because these guys do not have any style set, so their text color is being affected by the DIV that it was wrapped into. Let's try another example. Let's go back to the code. Let's try wrapping all of the paragraphs in a DIV whose style is let's just see, border: 3px solid red, save. And go back to the browser and let's refresh. You can see that the wrapAll functions has taken all of the paragraphs, and wrapped them inside a DIV whose border is now red, and three pixels wide. Okay so far so good. Let's go back to the code, let's comment this guys out. All right, now let's try the remove the Empty function. So, I am going to write a expression here that gets the unordered list and I am going to call Empty, and go back to browser and refresh, and you can see that the list items have now all then emptied out from the unordered list. Okay, so that should give you a pretty good idea of how these functions work. Now you have seen how to create content, you've seen how to insert it, and now you're going to go have to do some other manipulations on it like wrapping and replacing and removing.

Wrapping, replacing, and removing content

In this lesson, we are going to see how to use jQuery for wrapping, replacing, and removing content. Up until now, we have seen how to insert and manipulate some content, but now we are going to do a little bit of additional operations. So, in addition to inserting content, jQuery has a bunch of functions for doing some additional operations like wrapping content in the page, replacing it, copying it, removing it, all that great stuff. So here is the list of functions that you use in order to do that. And as you can see there is a half-a- dozen functions just for wrapping the content. So, let's take a look at those. The Wrap functions basically takes matched elements and wraps them inside something else. So, in this case for example the Wrap function will take each one of the elements on the matched set that you are calling the Wrap function on, and place them inside the HTML that you specify here. So, for example if I was calling the Wrap function on a whole bunch of images, and I passed the String, like DIV inside here, then each one of the images will be wrapped inside it's own separate DIV. Similarly, the Wrap Element works pretty much the same way. Each one of the elements inside the matched set that this is being called on, will be wrapped inside the element that I specify here. The wrapAll works pretty similarly although what it does is rather than wrapping each one of the individually matched elements into it's own wrapper. It will take all of the elements inside the matched set and place them in either the HTML that I am specifying here, or the element. And finally, the wrapInner functions will wrap the inside trial contents of each matched element, including text within either HTML or the DOM element that specify here assuming that the DOM element that I am passing is allowed to have children inside of it. So, for example Images can't have child elements inside them. So that wouldn't work. If I call wrapInner on an ul tag and I had a whole bunch of allies, then all those allies will be wrapped inside whatever I passed in as this HTML or this HTML or this element. So that's wrapping you can also replace. So the replaceWith function, you give it some content, and it will replace all of the matched elements in the result set with whatever content you specify here. And content either be HTML or a series of DOM elements. And the replaceAll basically replaces the elements that are matched by the selector with the matched elements. So, this selector here is going to be used to find which should be replaced by the all the elements that are being called on. And the last couple of functions are some pretty convenient functions, Empty basically removes all the child nodes from all the elements that are in the set, and you are calling it on. Remove just removes all the matched elements from the DOM. So, what you do is you write your jQuery selector, then you Call, Remove and then all those elements taken out the document. Then the Clone function makes copies. So, this Clone function clones the matched DOM elements and then selects all the clones. This version here which takes a Boolean argument, if you pass True then it will clone not only the elements, but it will also copy all the event handlers, whereas this one will not. Okay so that's a trip down that function set. Let's take a look at some examples in the code. I am going to open up my wrapping_start file right here. The same document we have been working on. The list is here paragraphs, and so on. Let's do a couple of experiments. So let's wrap all the paragraph tabs, and let's wrap each one into a DIV who's style has been set to color:red. So all the text inside those DIVs should be red. We need to put that in a tag. So, let's do that and then let's close the DIV off. Okay, so let's try that out, go to the browser and see what happens. So, you can see that the paragraphs two and four. The ones that did not have classes set on them, have now changed to Red text. And that's because these guys do not have any style set, so their text color is being affected by the DIV that it was wrapped into. Let's try another example. Let's go back to the code. Let's try wrapping all of the paragraphs in a DIV whose style is let's just see, border: 3px solid red, save. And go back to the browser and let's refresh. You can see that the wrapAll functions has taken all of the paragraphs, and wrapped them inside a DIV whose border is now red, and three pixels wide. Okay so far so good. Let's go back to the code, let's comment this guys out. All right, now let's try the remove the Empty function. So, I am going to write a expression here that gets the unordered list and I am going to call Empty, and go back to browser and refresh, and you can see that the list items have now all then emptied out from the unordered list. Okay, so that should give you a pretty good idea of how these functions work. Now you have seen how to create content, you've seen how to insert it, and now you're going to go have to do some other manipulations on it like wrapping and replacing and removing.

Show transcript

This video is part of

Image for jQuery Essential Training
jQuery Essential Training

49 video lessons · 95759 viewers

Joe Marini
Author

 
Expand all | Collapse all
  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

Start learning today

Get unlimited access to all courses for just $25/month.

Become a member
Sometimes @lynda teaches me how to use a program and sometimes Lynda.com changes my life forever. @JosefShutter
@lynda lynda.com is an absolute life saver when it comes to learning todays software. Definitely recommend it! #higherlearning @Michael_Caraway
@lynda The best thing online! Your database of courses is great! To the mark and very helpful. Thanks! @ru22more
Got to create something yesterday I never thought I could do. #thanks @lynda @Ngventurella
I really do love @lynda as a learning platform. Never stop learning and developing, it’s probably our greatest gift as a species! @soundslikedavid
@lynda just subscribed to lynda.com all I can say its brilliant join now trust me @ButchSamurai
@lynda is an awesome resource. The membership is priceless if you take advantage of it. @diabetic_techie
One of the best decision I made this year. Buy a 1yr subscription to @lynda @cybercaptive
guys lynda.com (@lynda) is the best. So far I’ve learned Java, principles of OO programming, and now learning about MS project @lucasmitchell
Signed back up to @lynda dot com. I’ve missed it!! Proper geeking out right now! #timetolearn #geek @JayGodbold
Share a link to this course

What are exercise files?

Exercise files are the same files the author uses in the course. Save time by downloading the author's files instead of setting up your own files, and learn by following along with the instructor.

Can I take this course without the exercise files?

Yes! If you decide you would like the exercise files later, you can upgrade to a premium account any time.

Become a member Download sample files See plans and pricing

Please wait... please wait ...
Upgrade to get access to exercise files.

Exercise files video

How to use exercise files.

Learn by watching, listening, and doing, Exercise files are the same files the author uses in the course, so you can download them and follow along Premium memberships include access to all exercise files in the library.


Exercise files

Exercise files video

How to use exercise files.

For additional information on downloading and using exercise files, watch our instructional video or read the instructions in the FAQ.

This course includes free exercise files, so you can practice while you watch the course. To access all the exercise files in our library, become a Premium Member.

Join now "Already a member? Log in

Are you sure you want to mark all the videos in this course as unwatched?

This will not affect your course history, your reports, or your certificates of completion for this course.


Mark all as unwatched Cancel

Congratulations

You have completed jQuery Essential Training.

Return to your organization's learning portal to continue training, or close this page.


OK
Become a member to add this course to a playlist

Join today and get unlimited access to the entire library of video courses—and create as many playlists as you like.

Get started

Already a member?

Become a member to like this course.

Join today and get unlimited access to the entire library of video courses.

Get started

Already a member?

Exercise files

Learn by watching, listening, and doing! Exercise files are the same files the author uses in the course, so you can download them and follow along. Exercise files are available with all Premium memberships. Learn more

Get started

Already a Premium member?

Exercise files video

How to use exercise files.

Ask a question

Thanks for contacting us.
You’ll hear from our Customer Service team within 24 hours.

Please enter the text shown below:

The classic layout automatically defaults to the latest Flash Player.

To choose a different player, hold the cursor over your name at the top right of any lynda.com page and choose Site preferencesfrom the dropdown menu.

Continue to classic layout Stay on new layout
Exercise files

Access exercise files from a button right under the course name.

Mark videos as unwatched

Remove icons showing you already watched videos if you want to start over.

Control your viewing experience

Make the video wide, narrow, full-screen, or pop the player out of the page into its own window.

Interactive transcripts

Click on text in the transcript to jump to that spot in the video. As the video plays, the relevant spot in the transcript will be highlighted.

Are you sure you want to delete this note?

No

Your file was successfully uploaded.

Thanks for signing up.

We’ll send you a confirmation email shortly.


Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

Keep up with news, tips, and latest courses with emails from lynda.com.

Sign up and receive emails about lynda.com and our online training library:

Here’s our privacy policy with more details about how we handle your information.

   
submit Lightbox submit clicked
Terms and conditions of use

We've updated our terms and conditions (now called terms of service).Go
Review and accept our updated terms of service.