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jQuery('jQuery').find('a').attr('href','http://www.jquery.com') .end().appendTo('body'); Notice how I am using the end() method here to undo the find() method so that when I call the appendTo() method, it appends what was originally contained in the initial wrapper set. Discussion In this recipe we’ve passed the jQuery function a string of raw HTML that is taken and used to create DOM elements on the fly. It’s also possible to simply pass the jQuery function a DOM object created by the DOM method createElement(): jQuery(document.createElement('p')).appendTo('body'); //adds an empty p element to the page Of course, this could be rather laborious depending upon the specifics of the usage when a string of HTML containing multiple elements will work just fine. It’s also worth mentioning here that we’ve only scratched the surface of the manipulation methods by using the appendTo() method. In addition to the appendTo() method, there are also the following manipulation methods: • append() • prepend() • prependTo() • after() • before() • insertAfter() • insertBefore() • wrap() • wrapAll() • wrapInner() 1.11 Removing DOM Elements Problem You want to remove elements from the DOM. 24 | Chapter 1: jQuery Basics
Solution The remove() method can be used to remove a selected set of elements and their children elements from the DOM. Examine the following code: Anchors Anchor Element Anchor Element Anchor Element jQuery('a').remove(); When the preceding code is loaded into a browser, the anchor elements will remain in the page until the JavaScript is executed. Once the remove() method is used to remove all anchor elements from the DOM, the page will visually contain only an element. It’s also possible to pass the method an expression to filter the set of elements to be removed. For example, our code could change to remove only anchors with a specific class: Anchors Anchor Element Anchor Element Anchor Element jQuery('a').remove('.remove'); Discussion When using the jQuery remove() method, you need to keep two things in mind: 1.11 Removing DOM Elements | 25
Page 1 and 2: Solutions & Examples for jQuery Dev
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Page 6 and 7: jQuery Cookbook by jQuery Community
Page 8 and 9: 2.3 Selecting Elements by Index Ord
Page 10 and 11: 8.5 Passing Dynamic Data to Event H
Page 12 and 13: 16.5 Using HTML Fragments and jQuer
Page 14 and 15: This is largely what makes somethin
Page 16 and 17: on client-side optimization techniq
Page 18 and 19: Tech Editors Karl Swedberg, after h
Page 20 and 21: What You’ll Learn We’ll start o
Page 22 and 23: If none of this works, it’s possi
Page 24 and 25: 800-998-9938 (in the United States
Page 26 and 27: traversing and manipulation, browse
Page 28 and 29: • Using the jQuery wrapper and im
Page 30 and 31: The jQuery wrapper set A good major
Page 32 and 33: — Attr — Class — HTML — Tex
Page 34 and 35: alert('jQuery ' + jQuery.fn.jquery)
Page 36 and 37: alert(jQuery('p').text()); }); T
Page 38 and 39: You should be aware that the first
Page 40 and 41: "4 inputs" alert('selected' + jQuer
Page 42 and 43: 1.6 Finding Descendant Elements Wit
Page 44 and 45: .end().end().length); //alerts 3
Page 46 and 47: Now, let’s select the second ele
Page 50 and 51: • While the elements selected are
Page 52 and 53: Discussion The cloning method is ac
Page 54 and 55: method by passing the method the at
Page 56 and 57: jQuery('p').text('Hello World,
Page 59 and 60: 2.0 Introduction CHAPTER 2 Selectin
Page 61 and 62: It’s worth noting that combinator
Page 63 and 64: all siblings that follow, not just
Page 65 and 66: Discussion As mentioned, an element
Page 67 and 68: 2.6 Selecting Elements by What They
Page 69 and 70: The preceding selector would select
Page 71 and 72: These filters can also be used with
Page 73 and 74: Solution As well as passing a selec
Page 75: The purpose of the selector would b
Page 78 and 79: alert(urls.join(",")); We were able
Page 80 and 81: Even though this may be the most ob
Page 82 and 83: Figure 3-2. Code output As you can
Page 84 and 85: Chapter 3 - Recipe 3 - Converting a
Page 86 and 87: Figure 3-4. Code output 3.4 Getting
Page 88 and 89: Discussion The core method index()
Page 90 and 91: Figure 3-6. Code output In the prec
Page 92 and 93: ligula. Aenean mattis pulvinar est
Page 94 and 95: Solution Let’s say you inherit a
Page 96 and 97: If you use this technique, you will
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available on the Web. jQuery hosts
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Discussion In the preceding example
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.click(function() { // Special clic
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}); })(jQuery); 4.3 Filtering Array
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Discussion In this example, we have
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}); }); })(jQuery); Discussion Upon
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Discussion In this recipe, we use t
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Solution The if/else statement and
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var foo = new Foo( 'bar' ); foo.ale
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} $('#province').toggle( value == '
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Did jQuery invent chaining? No. jQu
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Whether the idea comes from elsewhe
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}; return object; That could also b
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null or undefined, remove the attri
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The +new Date in this code is just
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(function() { var log = [], index =
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The page also contains a large numb
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you could use this: $('.clientX') /
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And you have this HTML code in your
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when you discover the slow parts, y
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A Warning About for..in Loops Never
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Other code here calls maxMagnitude
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matter, but in performance-critical
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console.log( $foo ); $foo.css({ fon
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Solution 1 You’re using the minif
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After the page loads, you are down
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5.19 Writing Unobtrusive JavaScript
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Documentation Tutorials We’ve
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Beware that you don’t make the us
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+ $(document).scrollLeft() }) .show
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Want to read more? You can find thi
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