jquery-mobile/experiments/api-viewer/docs/find/index.html

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				<h1>.find()</h1>
  				
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<h2 class="jq-clearfix roundTop section-title">
<span class="name">.find( selector )</span> <span class="returns">Returns: <a class="return" href="http://docs.jquery.com/Types#jQuery">jQuery</a></span>
</h2>
<div class="  entry-details">
<p class="desc"><strong>Description: </strong>Get the descendants of each element in the current set of matched elements, filtered by a selector.</p>
<ul class="signatures"><li class="signature" id="find-selector">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.find( selector )</h4>
<p class="arguement"><strong>selector</strong>A string containing a selector expression to match elements against.</p>
</li></ul>
<div class="longdesc">
<p>Given a jQuery object that represents a set of DOM elements, the <code>.find()</code> method allows us to search through the descendants of these elements in the DOM tree and construct a new jQuery object from the matching elements. The <code>.find()</code> and <code>.children()</code> methods are similar, except that the latter only travels a single level down the DOM tree.</p>
<p>The method accepts a selector expression of the same type that we can pass to the $() function. The elements will be filtered by testing whether they match this selector.</p>
<p>Consider a page with a basic nested list on it:</p>
<pre>
&lt;ul class="level-1"&gt;
  &lt;li class="item-i"&gt;I&lt;/li&gt;
  &lt;li class="item-ii"&gt;II
    &lt;ul class="level-2"&gt;
      &lt;li class="item-a"&gt;A&lt;/li&gt;
      &lt;li class="item-b"&gt;B
        &lt;ul class="level-3"&gt;
          &lt;li class="item-1"&gt;1&lt;/li&gt;
          &lt;li class="item-2"&gt;2&lt;/li&gt;
          &lt;li class="item-3"&gt;3&lt;/li&gt;
        &lt;/ul&gt;
      &lt;/li&gt;
      &lt;li class="item-c"&gt;C&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/li&gt;
  &lt;li class="item-iii"&gt;III&lt;/li&gt;
&lt;/ul&gt;
</pre>
<p>If we begin at item II, we can find list items within it:</p>
<pre>$('li.item-ii').find('li').css('background-color', 'red');</pre>
<p>The result of this call is a red background on items A, B, 1, 2, 3, and C. Even though item II matches the selector expression, it is not included in the results; only descendants are considered candidates for the match.</p>
<p>As discussed in “The jQuery Factory Function” section above, selector context is implemented with the <code>.find()</code> <code>method;</code> therefore, <code>$('li.item-ii').find('li')</code> is equivalent to <code>$('li', 'li.item-ii')</code>.</p>
<blckquote>Unlike in the rest of the tree traversal methods, the selector expression is required in a call to <code>.find()</code>. If we need to retrieve all of the descendant elements, we can pass in the universal selector <code>'*'</code> to accomplish this.</blckquote>
</div>
<h3>Examples:</h3>
<div id="entry-examples" class="entry-examples">
<div id="example-0">
<h4>Example: <span class="desc">Starts with all paragraphs and searches for descendant span elements, same as $("p span")</span>
</h4>
<pre><code class="example demo-code">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
  &lt;script src="http://code.jquery.com/jquery-latest.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
	&lt;p&gt;&lt;span&gt;Hello&lt;/span&gt;, how are you?&lt;/p&gt;

  &lt;p&gt;Me? I'm &lt;span&gt;good&lt;/span&gt;.&lt;/p&gt;
&lt;script&gt;$("p").find("span").css('color','red');&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;</code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
<div id="example-1">
<h4>Example: <span class="desc">Add spans around each word then add a hover and italicize words with the letter t.</span>
</h4>
<pre><code class="example demo-code">&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
  &lt;style&gt;
  p { font-size:20px; width:200px; cursor:default; 
      color:blue; font-weight:bold; margin:0 10px; }
  .hilite { background:yellow; }
  &lt;/style&gt;
  &lt;script src="http://code.jquery.com/jquery-latest.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
	&lt;p&gt;
    When the day is short
    find that which matters to you
    or stop believing
  &lt;/p&gt;
&lt;script&gt;
    var newText = $("p").text().split(" ").join("&lt;/span&gt; &lt;span&gt;");
    newText = "&lt;span&gt;" + newText + "&lt;/span&gt;";

    $("p").html(newText)
          .find('span')
            .hover(function () { $(this).addClass("hilite"); },
                   function () { $(this).removeClass("hilite"); })
          .end()
          .find(":contains('t')")
            .css({"font-style":"italic", "font-weight":"bolder"});

&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;</code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
</div>
</div>
</div>

				</div>

</body></html>
added a jQuery api viewer demo. NOTE: content is a modified version of the downloadable HTML from http://jqapi.com 2010-09-16 17:13:38 +00:00			`<!DOCTYPE html>`
			`<html lang='en'><head><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>`
Big update: In starting markup, pages should now be identified with the attribute data-role="page". This allows us to then add ui-page programatically, hiding all non-active pages, and apply ui-page-active to one page at a time to show it. mobile.js is updated to find pages by this attribute now, instead of ui-page class. fixes issue 32 2010-09-18 16:20:35 +00:00			`<div data-role="page">`
updated markup to use data-role attrs in place of classes for header/content/footer 2010-09-21 14:58:54 +00:00			`<div data-role="header">`
added a jQuery api viewer demo. NOTE: content is a modified version of the downloadable HTML from http://jqapi.com 2010-09-16 17:13:38 +00:00			`<h1>.find()</h1>`

			`</div>`
switched up padding and margins on content div. Now it will get 15px padding, unless its a fullscreen page. Inset listviews have no margin now, and regular listviews have -15px margins. Also, collapsibles now have no padding. Updated HTML to remove ui-body classes for content divs, to match these changes. Fixes #161 2010-10-12 19:50:28 +00:00			`<div data-role="content" data-theme="c" id="find1">`
added a jQuery api viewer demo. NOTE: content is a modified version of the downloadable HTML from http://jqapi.com 2010-09-16 17:13:38 +00:00			`<h2 class="jq-clearfix roundTop section-title">`
			`<span class="name">.find( selector )</span> <span class="returns">Returns: <a class="return" href="http://docs.jquery.com/Types#jQuery">jQuery</a></span>`
			`</h2>`
			`<div class=" entry-details">`
			`<p class="desc"><strong>Description: </strong>Get the descendants of each element in the current set of matched elements, filtered by a selector.</p>`
			`<ul class="signatures"><li class="signature" id="find-selector">`
			`<h4 class="name">`
			`<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.find( selector )</h4>`
			`<p class="arguement"><strong>selector</strong>A string containing a selector expression to match elements against.</p>`
			`</li></ul>`
			`<div class="longdesc">`
			`<p>Given a jQuery object that represents a set of DOM elements, the <code>.find()</code> method allows us to search through the descendants of these elements in the DOM tree and construct a new jQuery object from the matching elements. The <code>.find()</code> and <code>.children()</code> methods are similar, except that the latter only travels a single level down the DOM tree.</p>`
			`<p>The method accepts a selector expression of the same type that we can pass to the $() function. The elements will be filtered by testing whether they match this selector.</p>`
			`<p>Consider a page with a basic nested list on it:</p>`
			`<pre>`
			`<ul class="level-1">`
			`<li class="item-i">I</li>`
			`<li class="item-ii">II`
			`<ul class="level-2">`
			`<li class="item-a">A</li>`
			`<li class="item-b">B`
			`<ul class="level-3">`
			`<li class="item-1">1</li>`
			`<li class="item-2">2</li>`
			`<li class="item-3">3</li>`
			`</ul>`
			`</li>`
			`<li class="item-c">C</li>`
			`</ul>`
			`</li>`
			`<li class="item-iii">III</li>`
			`</ul>`
			`</pre>`
			`<p>If we begin at item II, we can find list items within it:</p>`
			`<pre>$('li.item-ii').find('li').css('background-color', 'red');</pre>`
			`<p>The result of this call is a red background on items A, B, 1, 2, 3, and C. Even though item II matches the selector expression, it is not included in the results; only descendants are considered candidates for the match.</p>`
			`<p>As discussed in “The jQuery Factory Function” section above, selector context is implemented with the <code>.find()</code> <code>method;</code> therefore, <code>$('li.item-ii').find('li')</code> is equivalent to <code>$('li', 'li.item-ii')</code>.</p>`
			`<blckquote>Unlike in the rest of the tree traversal methods, the selector expression is required in a call to <code>.find()</code>. If we need to retrieve all of the descendant elements, we can pass in the universal selector <code>'*'</code> to accomplish this.</blckquote>`
			`</div>`
			`<h3>Examples:</h3>`
			`<div id="entry-examples" class="entry-examples">`
			`<div id="example-0">`
			`<h4>Example: <span class="desc">Starts with all paragraphs and searches for descendant span elements, same as $("p span")</span>`
			`</h4>`
			`<pre><code class="example demo-code"><!DOCTYPE html>`
			`<html>`
			`<head>`
			`<script src="http://code.jquery.com/jquery-latest.js"></script>`
			`</head>`
			`<body>`
			`<p><span>Hello</span>, how are you?</p>`

			`<p>Me? I'm <span>good</span>.</p>`
			`<script>$("p").find("span").css('color','red');</script>`
			`</body>`
			`</html></code></pre>`
			`<h4>Demo:</h4>`
			`<div class="demo code-demo"></div>`
			`</div>`
			`<div id="example-1">`
			`<h4>Example: <span class="desc">Add spans around each word then add a hover and italicize words with the letter t.</span>`
			`</h4>`
			`<pre><code class="example demo-code"><!DOCTYPE html>`
			`<html>`
			`<head>`
			`<style>`
			`p { font-size:20px; width:200px; cursor:default;`
			`color:blue; font-weight:bold; margin:0 10px; }`
			`.hilite { background:yellow; }`
			`</style>`
			`<script src="http://code.jquery.com/jquery-latest.js"></script>`
			`</head>`
			`<body>`
			`<p>`
			`When the day is short`
			`find that which matters to you`
			`or stop believing`
			`</p>`
			`<script>`
			`var newText = $("p").text().split(" ").join("</span> <span>");`
			`newText = "<span>" + newText + "</span>";`

			`$("p").html(newText)`
			`.find('span')`
			`.hover(function () { $(this).addClass("hilite"); },`
			`function () { $(this).removeClass("hilite"); })`
			`.end()`
			`.find(":contains('t')")`
			`.css({"font-style":"italic", "font-weight":"bolder"});`

			`</script>`
			`</body>`
			`</html></code></pre>`
			`<h4>Demo:</h4>`
			`<div class="demo code-demo"></div>`
			`</div>`
			`</div>`
			`</div>`
			`</div>`

			`</div>`

			`</body></html>`