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<title>Example: Subcookie Example</title>
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<h1>Example: Subcookie Example</h1>
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<p>This example shows how to get and set subcookies as well as using conversion functions when retrieving subcookie values.</p>
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<pre id="results"></pre>
<script>
YUI().use('cookie', 'node', function (Y) {
var results = Y.one('#results'),
log = function(str) {
results.append(str + '<br>');
};
//set subcookie values
Y.Cookie.setSub("example", "name", "Yahoo!");
Y.Cookie.setSub("example", "today", (new Date()).toString());
Y.Cookie.setSub("example", "count", Math.round(Math.random() * 30));
//get subcookie values
var name = Y.Cookie.getSub("example", "name");
var today = Y.Cookie.getSub("example", "today", function (value) {
return new Date(value);
});
var count = Y.Cookie.getSub("example", "count", Number);
log("The subcookie 'name' is '" + name + "' (" + (typeof name) + ")");
log("The subcookie 'today' is '" + today + "' (" + (typeof today) + ")");
log("The subcookie 'count' is '" + count + "' (" + (typeof count) + ")");
});
</script>
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<h2>Description</h2>
<p>The first three lines attempt to read the values stored in subcookies of the "example" cookie:</p>
<pre class="code prettyprint">var name = Y.Cookie.getSub("example", "name");
var today = Y.Cookie.getSub("example", "today", function (value) {
return new Date(value);
});
var count = Y.Cookie.getSub("example", "count", Number);</pre>
<p>The "name" subcookie stores a string so it is retrieved without specifying a third argument.</p>
<p>The "today" subcookie stores a date string, which should be converted to a <code>Date</code> object upon retrieval; the third argument of <code>getSub()</code> is specified as a custom function that will convert the returned value into a <code>Date</code> object.</p>
<p>The "count" subcookie contains a number and is converted to an actual JavaScript number by passing in the native <code>Number</code> function.</p>
<p>If any of these subcookies don't exist, <code>getSub()</code> returns <code>null</code>. This should be the case the first time you run the example.</p>
<p>The retrieved values are shown in the browser console.</p>
<p>After that, new values are assigned to the various subcookies:</p>
<pre class="code prettyprint">Y.Cookie.setSub("example", "name", "Yahoo!");
Y.Cookie.setSub("example", "today", (new Date()).toString());
Y.Cookie.setSub("example", "count", Math.round(Math.random() * 30));</pre>
<p>The "name" subcookie is set to "Yahoo!", the "today" subcookie is set to the value of a new <code>Date</code> object as a string, and the "count" subcookie is filled with a random number. The next time you run the example, the subcookies should have these values.</p>
<h2>Complete Example Source</h2>
<pre class="code prettyprint"><pre id="results"></pre>
<script>
YUI().use('cookie', 'node', function (Y) {
var results = Y.one('#results'),
log = function(str) {
results.append(str + '<br>');
};
//set subcookie values
Y.Cookie.setSub("example", "name", "Yahoo!");
Y.Cookie.setSub("example", "today", (new Date()).toString());
Y.Cookie.setSub("example", "count", Math.round(Math.random() * 30));
//get subcookie values
var name = Y.Cookie.getSub("example", "name");
var today = Y.Cookie.getSub("example", "today", function (value) {
return new Date(value);
});
var count = Y.Cookie.getSub("example", "count", Number);
log("The subcookie 'name' is '" + name + "' (" + (typeof name) + ")");
log("The subcookie 'today' is '" + today + "' (" + (typeof today) + ")");
log("The subcookie 'count' is '" + count + "' (" + (typeof count) + ")");
});
</script></pre>
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<h2 class="no-toc">Examples</h2>
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<ul class="examples">
<li data-description="Demonstrates basic usage of the Cookie utility for reading and writing cookies.">
<a href="cookie-simple-example.html">Simple Cookie Example</a>
</li>
<li data-description="Demonstrates using the Cookie utility to get, set and remove cookies.">
<a href="cookie-advanced-example.html">Advanced Cookie Example</a>
</li>
<li data-description="Demonstrates using the Cookie utility to get and set subcookies.">
<a href="cookie-subcookie-example.html">Subcookie Example</a>
</li>
</ul>
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<script>
YUI.Env.Tests = {
examples: [],
project: '../assets',
assets: '../assets/cookie',
name: 'cookie-subcookie-example',
title: 'Subcookie Example',
newWindow: '',
auto: false
};
YUI.Env.Tests.examples.push('cookie-simple-example');
YUI.Env.Tests.examples.push('cookie-advanced-example');
YUI.Env.Tests.examples.push('cookie-subcookie-example');
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