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<title>YUI Library Examples: Dom Collection: Exploring the Dom Collection's API</title>
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//enable passthrough of errors from YUI Event:
if ((typeof YAHOO !== "undefined") && (YAHOO.util) && (YAHOO.util.Event)) {
YAHOO.util.Event.throwErrors = true;
}
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<div id="pagetitle"><h1>YUI Library Examples: Dom Collection: Exploring the Dom Collection's API</h1></div>
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<div class="yui-ge">
<div class="yui-u first example">
<cite class="byline">This example was contributed by <a href='http://www.wait-till-i.com/'>Christian Heilmann</a> and members of his <a href='http://yuiblog.com/blog/2007/12/06/juku/'>Juku</a> training class at Yahoo.</cite>
<div class="promo">
<h1>Dom Collection: Exploring the Dom Collection's API</h1>
<div class="exampleIntro">
<p>In this example, the use of several key Dom Collection methods is explored. Given the markup in the source section, you can invoke any of the methods by clicking on them; the Source is updated, as is its in-browser appearance (Render). In the Outupt section, you can review the elements that are selected or affected (or, in a few cases, the JavaScript <code>return</code> value) of the function you invoked.</p>
</div>
<div class="example-container module ">
<div class="hd exampleHd">
<p class="newWindowButton yui-skin-sam"><!--<span id="newWindowLinkx"><span class="first-child">--><a href="dom-explorer_clean.html" target="_blank">View example in new window.</a><!--</span></span>-->
</div> <div id="example-canvas" class="bd">
<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
<h3>Source</h3>
<div id="source" class="contentContainer">
<pre>
</pre>
</div>
<h3>Functions</h3>
<div id="functions" class="contentContainer">
<ul id="functionList">
<li id="get1"><a href="foo.html">get('demo')</a></li>
<li id="get2"><a href="foo.html">get(['demo', 'demoList'])</a></li>
<li id="getAncestorByTagName"><a href="foo.html">getAncestorByTagName('one', 'div')</a></li>
<li id="getAncestorByClassName"><a href="foo.html">getAncestorByClassName('listItem')</a></li>
<li id="getChildren"><a href="foo.html">getChildren('demoList')</a></li>
<li id="getElementsBy"><a href="foo.html">getElementsBy(<em>getElementsByClassName('specialItems')</em>, 'li', 'demo')</a></li>
<li id="getFirstChild"><a href="foo.html">getFirstChild('demoList')</a></li>
<li id="getLastChild"><a href="foo.html">getLastChild('demoList')</a></li>
<li id="getNextSibling"><a href="foo.html">getNextSibling('one')</a></li>
<li id="getPreviousSibling"><a href="foo.html">getPreviousSibling('two')</a></li>
<li id="isAncestor"><a href="foo.html">isAncestor('demo', 'one')</a></li>
<li id="insertBefore"><a href="foo.html">insertBefore(<em>li</em>, 'one')</a></li>
<li id="insertAfter"><a href="foo.html">insertAfter(<em>li</em>, 'one')</a></li>
</ul>
</div>
<h3>Render</h3>
<div id="render" class="contentContainer">
</div>
<h3>Output</h3>
<div id="output" class="contentContainer">
</div>
<script type="text/javascript" charset="utf-8">
(function() {
YAHOO.util.Event.addListener("functionList", "click", function(evt) {
var target = YAHOO.util.Event.getTarget(evt);
YAHOO.util.Event.preventDefault(evt);
if(evt.type === 'click' && target && target.parentNode.id) {
setView(target.parentNode.id);
}
});
// constant codedemo
var codedemo = [];
codedemo.push('<div id="demo">');
codedemo.push(' <ul id="demoList" class="parent">');
codedemo.push(' <li id="one" class="listItem">item 1</li>');
codedemo.push(' <li id="two" class="listItem">item 2</li>');
codedemo.push(' <li id="three" class="specialItem">item 3</li>');
codedemo.push(' </ul>');
codedemo.push('</div>');
// views object
var views = {
sourceView: document.getElementById('source'),
renderView: document.getElementById('render'),
outputView: document.getElementById('output'),
defaultView: {
source: function() {
return codedemo;
},
output: ['Please select a function.']
},
get1 : {
source: function(){
var temp = [].concat(codedemo);
temp[0] = '<div id="demo" class="highlight">';
return temp;
},
output: ['<div id="demo" class="highlight">']
},
get2 : {
source: function(){
var temp = [].concat(codedemo);
temp[0] = '<div id="demo" class="highlight">';
temp[1] = ' <ul id="demoList" class="parent highlight">';
return temp;
},
output: ['<div id="demo" class="highlight">', '<ul id="demoList" class="parent highlight">']
},
getAncestorByTagName : {
source: function() {
var temp = [].concat(codedemo);
temp[0] = '<div id="demo" class="highlight">';
return temp;
},
output: ['<div id="demo" class="highlight">']
},
getAncestorByClassName : {
source: function (){
var temp = [].concat(codedemo);
temp[1]=' <ul id="demoList" class="parent highlight">';
return temp;
},
output: ['<ul id="demoList" class="parent highlight">']
},
getChildren : {
source: function (){
var temp = [].concat(codedemo);
temp[2]=' <li id="one" class="listItem highlight">item 1</li>';
temp[3]=' <li id="two" class="listItem highlight">item 2</li>';
temp[4]=' <li id="three" class="specialItem highlight">item 3</li>';
return temp;
},
output: ['<li id="one" class="listItem">first</li>',
'<li id="two" class="listItem highlight">second</li>' ,
'<li id="three" class="specialItem highlight">item 3</li>']
},
getFirstChild : {
source: function (){
var temp =[].concat(codedemo);
temp[2]=' <li id="one" class="listItem highlight">item 1</li>';
return temp;
},
output: ['<li id="one" class="listItem">']
},
getLastChild : {
source: function(){
var temp =[].concat(codedemo);
temp[4] = ' <li id="three" class="specialItem highlight">item 3</li>';
return temp;
},
output : ['<li id="three" class="specialItem">']
},
getNextSibling : {
source: function(){
var temp = [].concat(codedemo);
temp[3]=' <li id="two" class="listItem highlight">item 2</li>';
return temp;
},
output: ['<li id="two" class="listItem">']
},
getPreviousSibling : {
source: function(){
var temp = [].concat(codedemo);
temp[2]=' <li id="one" class="listItem highlight">item 1</li>';
return temp;
},
output: ['<li id="one" class="listItem">']
},
isAncestor : {
source : function(){
var temp = [].concat(codedemo);
temp[0] = '<div id="demo" "highlight">';
temp[2]=' <li id="one" class="listItem highlight">item 1</li>';
return temp;
},
output: ['true']
},
insertBefore : {
source : function(){
var temp = [].concat(codedemo);
temp.splice(2,0,' <li id="four" class ="listItem highlight">new Item</li>');
return temp;
},
output: ['<li id="four">']
},
insertAfter: {
source : function(){
var temp = [].concat(codedemo);
temp.splice(3,0,' <li id="four" class ="listItem highlight">new Item</li>');
return temp;
},
output: ['<li id="four">']
},
getElementsBy : {
source: function (){
var temp = [].concat(codedemo);
temp[4] =' <li id="three" class="specialItem highlight">item 3</li>';
return temp;
},
output: ['<li id="three" class="specialItem">item 3</li>']
}
};
// render initial view
setView('defaultView');
function setView(viewName) {
// update sourceView
views['sourceView'].innerHTML = renderCode(views[viewName].source());
// update renderView
var code = views[viewName].source().join('');
code = code.replace(',', '');
views['renderView'].innerHTML = code;
var output = views[viewName].output;
views['outputView'].innerHTML = '';
var pre = document.createElement('pre');
for (var i = 0; output[i]; i++) {
pre.appendChild(document.createTextNode(output[i]));
pre.appendChild(document.createTextNode('\n'));
views['outputView'].appendChild(pre);
}
}
function renderCode(codedemo){
var out = '';
out += '<pre><ol>';
var hlString = '';
for(var i=0;codedemo[i];i++){
if (codedemo[i].search('highlight') !== -1) {
hlString = ' class="highlight"';
} else {
if (i%2==0)
hlString = ' class="even"';
}
out += '<li' + hlString + '><code>'+encode(codedemo[i])+'</code></li>'
hlString = ''
}
out+='</ol></pre>';
return out;
}
function encode(str){
str = str.replace(/</g,'&lt;');
str = str.replace(/>/g,'&gt;');
str = str.replace(/"/g,'&quot;');
return str;
}
})();
</script>
<!--END SOURCE CODE FOR EXAMPLE =============================== -->
</div>
</div>
</div>
<h2>Configuration for This Example</h2>
<p>You can load the necessary JavaScript and CSS for this example from Yahoo's servers. <a href="http://developer.yahoo.com/yui/articles/hosting/?event&dom&MIN#configure">Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured</a>.</p>
</div>
<div class="yui-u">
<div id="loggerModule" class="yui-skin-sam">
<h3 class="firstContent">YUI Logger Output:</h3>
<div id="loggerDiv"></div>
<div id="loggerGloss">
<p><strong>Note:</strong> You are viewing this example in debug mode with logging enabled. This can significantly slow performance.</p>
<p class="loggerButton"><span id="loggerLink"><span class="first-child"><a href="dom-explorer.html">Reload with logging<br />and debugging disabled.</a></span></span></p>
</div>
</div>
<div id="examples">
<h3>Dom Collection Examples:</h3>
<div id="exampleToc">
<ul>
<li><a href='../dom/setxy.html'>Using setXY</a></li><li><a href='../dom/getxy.html'>Using getXY</a></li><li><a href='../dom/setstyle.html'>Using setStyle</a></li><li><a href='../dom/getstyle.html'>Using getStyle</a></li><li><a href='../dom/hasclass.html'>Using hasClass</a></li><li><a href='../dom/addclass.html'>Using addClass</a></li><li><a href='../dom/removeclass.html'>Using removeClass</a></li><li><a href='../dom/getelementsbyclassname.html'>Using getElementsByClassName</a></li><li class='selected'><a href='../dom/dom-explorer.html'>Exploring the Dom Collection's API</a></li> </ul>
</div>
</div>
<div id="module">
<h3>More Dom Collection Resources:</h3>
<ul>
<li><a href="http://developer.yahoo.com/yui/dom/">User's Guide</a> (external)</li>
<li><a href="../../docs/module_dom.html">API Documentation</a></li>
<li><a href="http://yuiblog.com/assets/pdf/cheatsheets/dom.pdf">Cheat Sheet PDF</a> (external)</li></ul>
</div>
</div>
</div>
</div>
</div>
<div class="yui-b" id="tocWrapper">
<!-- TABLE OF CONTENTS -->
<div id="toc">
<ul>
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