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115 lines
No EOL
4.1 KiB
HTML
115 lines
No EOL
4.1 KiB
HTML
<!DOCTYPE html>
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<html lang='en'><head>
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<meta charset="utf-8" /><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>
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<div data-role="page">
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<div data-role="header">
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<h1>.get()</h1>
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</div>
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<div data-role="content" data-theme="c" id="get1">
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<h2 class="jq-clearfix roundTop section-title">
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<span class="name">.get( [ index ] )</span> <span class="returns">Returns: <a class="return" href="http://docs.jquery.com/Types#Element,%20Array">Element, Array</a></span>
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</h2>
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<div class=" entry-details">
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<p class="desc"><strong>Description: </strong>Retrieve the DOM elements matched by the jQuery object.</p>
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<ul class="signatures"><li class="signature" id="get-index">
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<h4 class="name">
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<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.get( [ index ] )</h4>
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<p class="arguement"><strong>index</strong>A zero-based integer indicating which element to retrieve.</p>
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</li></ul>
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<div class="longdesc">
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<p>The <code>.get()</code> method grants us access to the DOM nodes underlying each jQuery object. Suppose we had a simple unordered list on the page:</p>
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<pre>
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<ul>
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<li id="foo">foo</li>
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<li id="bar">bar</li>
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</ul>
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</pre>
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<p>Without a parameter, <code>.get()</code> returns all of the elements:</p>
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<pre>alert($('li').get());</pre>
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<p>All of the matched DOM nodes are returned by this call, contained in a standard array:</p>
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<p><span class="result">[<li id="foo">, <li id="bar">]</span></p>
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<p>With an index specified, .get() will retrieve a single element:</p>
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<pre>($('li').get(0));</pre>
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<p>Since the index is zero-based, the first list item is returned:</p>
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<p><span class="output"><li id="foo"></span></p>
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<p>Each jQuery object also masquerades as an array, so we can use the array dereferencing operator to get at the list item instead:</p>
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<pre>alert($('li')[0]);</pre>
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<p>However, this syntax lacks some of the additional capabilities of .get(), such as specifying a negative index:</p>
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<pre>alert($('li').get(-1));</pre>
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<p>A negative index is counted from the end of the matched set, so this example will return the last item in the list:</p>
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<p><span class="output"><li id="bar"></span></p>
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</div>
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<h3>Examples:</h3>
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<div id="entry-examples" class="entry-examples">
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<div id="example-0">
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<h4>Example: <span class="desc">Selects all divs in the document and returns the DOM Elements as an Array, then uses the built-in reverse-method to reverse that array.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>
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span { color:red; }
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</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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Reversed - <span></span>
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<div>One</div>
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<div>Two</div>
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<div>Three</div>
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<script>
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function disp(divs) {
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var a = [];
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for (var i = 0; i < divs.length; i++) {
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a.push(divs[i].innerHTML);
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}
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$("span").text(a.join(" "));
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}
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disp( $("div").get().reverse() );
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</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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<div id="example-1">
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<h4>Example: <span class="desc">Gives the tag name of the element clicked on.</span>
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</h4>
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<pre><code class="example demo-code"><!DOCTYPE html>
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<html>
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<head>
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<style>
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span { color:red; }
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div { background:yellow; }
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</style>
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<script src="http://code.jquery.com/jquery-latest.js"></script>
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</head>
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<body>
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<span>&nbsp;</span>
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<p>In this paragraph is an <span>important</span> section</p>
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<div><input type="text" /></div>
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<script>
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$("*", document.body).click(function (e) {
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e.stopPropagation();
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var domEl = $(this).get(0);
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$("span:first").text("Clicked on - " + domEl.tagName);
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});
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</script>
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</body>
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</html></code></pre>
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<h4>Demo:</h4>
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<div class="demo code-demo"></div>
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</div>
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</div>
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</div>
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</div>
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</div>
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</body></html> |