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<div id="pagetitle"><h1>YUI Library Examples: Cookie: Advanced Cookie Example</h1></div>
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<h2>Cookie: Advanced Cookie Example</h2>
<div id="example" class="promo">
<div class="example-intro">
<p>This example shows how to get, set, and remove cookies using the YUI Cookie utility.</p> </div>
<div class="module example-container ">
<div id="example-canvas" class="bd">
<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
<p>Click the buttons to interact with the cookie:</p>
<input type="button" value="Get Value" id="yui-cookie-btn1" />
<input type="button" value="Set Random Value" id="yui-cookie-btn2" />
<input type="button" value="Remove Value" id="yui-cookie-btn3" />
<script type="text/javascript">
YUI({base:"../../build/", timeout: 10000}).use("node", "cookie",function (Y) {
Y.Node.get("#yui-cookie-btn1").on("click", function(){
var value = Y.Cookie.get("example");
alert(value);
Y.log("Cookie 'example' has a value of '" + value + "'");
});
Y.Node.get("#yui-cookie-btn2").on("click", function(){
var newValue = "yui" + Math.round(Math.random() * Math.PI * 1000);
Y.Cookie.set("example", newValue);
Y.log("Set cookie 'example' to '" + newValue + "'");
});
Y.Node.get("#yui-cookie-btn3").on("click", function(){
Y.Cookie.remove("example");
Y.log("Removed cookie 'example'.");
});
});
</script>
<!--END SOURCE CODE FOR EXAMPLE =============================== -->
</div>
</div>
</div>
<h2 class="first">Advanced Cookie Example</h2>
<p>This example consists of three buttons, each of which performs one of the basic cookie functions: getting a value,
setting a value, and removing a value. The first button, "Get Value", retrieves the value of a cookie
and displays it in an alert:</p>
<div id="syntax1" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn1"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw2">var</span> value <span class="sy0">=</span> Y.<span class="me1">Cookie</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"example"</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> <span class="kw3">alert</span><span class="br0">(</span>value<span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Cookie 'example' has a value of '"</span> <span class="sy0">+</span> value <span class="sy0">+</span> <span class="st0">"'"</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li2"><div class="de2"><span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn1"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span>
<span class="kw2">var</span> value <span class="sy0">=</span> Y.<span class="me1">Cookie</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"example"</span><span class="br0">)</span><span class="sy0">;</span>
<span class="kw3">alert</span><span class="br0">(</span>value<span class="br0">)</span><span class="sy0">;</span>
Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Cookie 'example' has a value of '"</span> <span class="sy0">+</span> value <span class="sy0">+</span> <span class="st0">"'"</span><span class="br0">)</span><span class="sy0">;</span>
<span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax1-plain">Y.Node.get("#yui-cookie-btn1").on("click", function(){
var value = Y.Cookie.get("example");
alert(value);
Y.log("Cookie 'example' has a value of '" + value + "'");
});</textarea></div><p>The second button, "Set Random Value", creates a random value and sets the cookie's value equal to it:</p>
<div id="syntax2" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn2"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span></div></li><li class="li1"><div class="de1"> <span class="kw2">var</span> newValue <span class="sy0">=</span> <span class="st0">"yui"</span> <span class="sy0">+</span> Math.<span class="me1">round</span><span class="br0">(</span>Math.<span class="me1">random</span><span class="br0">(</span><span class="br0">)</span> <span class="sy0">*</span> Math.<span class="me1">PI</span> <span class="sy0">*</span> <span class="nu0">1000</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> Y.<span class="me1">Cookie</span>.<span class="me1">set</span><span class="br0">(</span><span class="st0">"example"</span><span class="sy0">,</span> newValue<span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Set cookie 'example' to '"</span> <span class="sy0">+</span> newValue <span class="sy0">+</span> <span class="st0">"'"</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li2"><div class="de2"><span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn2"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span>
<span class="kw2">var</span> newValue <span class="sy0">=</span> <span class="st0">"yui"</span> <span class="sy0">+</span> Math.<span class="me1">round</span><span class="br0">(</span>Math.<span class="me1">random</span><span class="br0">(</span><span class="br0">)</span> <span class="sy0">*</span> Math.<span class="me1">PI</span> <span class="sy0">*</span> <span class="nu0">1000</span><span class="br0">)</span><span class="sy0">;</span>
Y.<span class="me1">Cookie</span>.<span class="me1">set</span><span class="br0">(</span><span class="st0">"example"</span><span class="sy0">,</span> newValue<span class="br0">)</span><span class="sy0">;</span>
Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Set cookie 'example' to '"</span> <span class="sy0">+</span> newValue <span class="sy0">+</span> <span class="st0">"'"</span><span class="br0">)</span><span class="sy0">;</span>
<span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax2-plain">Y.Node.get("#yui-cookie-btn2").on("click", function(){
var newValue = "yui" + Math.round(Math.random() * Math.PI * 1000);
Y.Cookie.set("example", newValue);
Y.log("Set cookie 'example' to '" + newValue + "'");
});</textarea></div><p>After clicking this button, you can go back and click "Get Value" to see the new value that was assigned
to the cookie (you can also check the logger output).</p>
<p>The third button, "Remove Value", completely removes the cookie from the page:</p>
<div id="syntax3" class="yui-syntax-highlight"><div class="numbers"><pre class="javascript" style="font-family:monospace;"><ol><li class="li1"><div class="de1">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn3"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span></div></li><li class="li1"><div class="de1"> Y.<span class="me1">Cookie</span>.<span class="me1">remove</span><span class="br0">(</span><span class="st0">"example"</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"> Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Removed cookie 'example'."</span><span class="br0">)</span><span class="sy0">;</span></div></li><li class="li1"><div class="de1"><span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></div></li></ol></pre></div><div class="nonumbers"><pre class="javascript" style="font-family:monospace;">Y.<span class="me1">Node</span>.<span class="me1">get</span><span class="br0">(</span><span class="st0">"#yui-cookie-btn3"</span><span class="br0">)</span>.<span class="me1">on</span><span class="br0">(</span><span class="st0">"click"</span><span class="sy0">,</span> <span class="kw2">function</span><span class="br0">(</span><span class="br0">)</span><span class="br0">{</span>
Y.<span class="me1">Cookie</span>.<span class="me1">remove</span><span class="br0">(</span><span class="st0">"example"</span><span class="br0">)</span><span class="sy0">;</span>
Y.<span class="me1">log</span><span class="br0">(</span><span class="st0">"Removed cookie 'example'."</span><span class="br0">)</span><span class="sy0">;</span>
<span class="br0">}</span><span class="br0">)</span><span class="sy0">;</span></pre></div><textarea id="syntax3-plain">Y.Node.get("#yui-cookie-btn3").on("click", function(){
Y.Cookie.remove("example");
Y.log("Removed cookie 'example'.");
});</textarea></div><p>When this button is clicked, it removes the cookie. If "Get Value" is clicked immediately afterwards, the
value should be <code>null</code>.</p> </div>
<div class="yui-u sidebar">
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<h4>
Cookie Examples:</h4>
</div>
<div class="bd">
<ul>
<li><a href='../cookie/cookie-simple-example.html'>Simple Cookie Example</a></li><li class='selected'><a href='../cookie/cookie-advanced-example.html'>Advanced Cookie Example</a></li><li><a href='../cookie/cookie-subcookie-example.html'>Subcookie Example</a></li> </ul>
</div>
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<div class="mod box4">
<div class="hd">
<h4>More Cookie Resources:</h4>
</div>
<div class="bd">
<ul>
<!-- <li><a href="http://developer.yahoo.com/yui/cookie/">User's Guide</a> (external)</li> -->
<li><a href="../../api/module_cookie.html">API Documentation</a></li></ul>
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