(public).sospep.subjects ~ view article ~ Date

<h1 style="text-align: center;">Date</h1>
<h2>[what]</h2>
<ol>
<li>[] a native js object for working with Date values, see REF 1 and 2 for some basic examples of usage</li>
<li>[] this article shows how to add some additional properties to the native js Date object.</li>
</ol>
<h2>[why]</h2>
<ol>
<li>[] consistency -</li>
<li>[] calculations -</li>
</ol>
<h2>[where]</h2>
<ol>
<li>[] money.js - implements the following example of adding additional properties (monthName, ISODate,&nbsp;...)&nbsp;to the native&nbsp;js Date object and demonstrates their usage.</li>
</ol>
<h2>[example]</h2>
<ol>
<li>[] adding a new property (monthName)&nbsp;to the native Date object ( using the Date.prototype)&nbsp;?property?</li>
<li>[] adding a new property (I&nbsp;</li>
</ol>
<h2>[how-to example-1]</h2>
<ol>
<li>// using the "prototype" ___ (property of the Date object)&nbsp;, i am adding a new function/method named "getMonthName()" to the native/primitive js object&nbsp;Date, this method will determine the monthName of the current Date and add/set a monthName property to the Date object</li>
<ol>
<li>Date.prototype.getMonthName=function()<br />{<br />if (this.getMonth()==0){this.monthName="January"};<br />if (this.getMonth()==1){this.monthName="February"};</li>
<li>// ... REPLACED the above code with an array of "monthNames" and single statement this.monthName = monthNames(this.getMonth())</li>
<li>}</li>
</ol>
<li>CALL&nbsp;your new&nbsp;method on the instance of Date that you are working with, to set the value of your new property.</li>
<ol>
<li>var myDate = new Date();</li>
<li>myDate.getMonthName();</li>
</ol>
<li>ACCESS the value of the new&nbsp;property that you have added anywhere in your js code</li>
<ol>
<li>myDate.monthName</li>
</ol></ol>
<h2>[how-to - example-2]</h2>
<ol>
<li>// using the "prototype" ___ (property of the Date object)&nbsp;, i am adding a new function/method named "getISO()" to the native/primitive js object&nbsp;Date, this method will determine the monthNumber of the current Date and set an ISODate format property ( YES&nbsp; i know there is a native js method for this, BUT it&nbsp;doesnt appear to work in all browsers(IE8))</li>
<ol>
<li>Date.prototype.getISO=function()</li>
<li>//&nbsp;created an array of "monthNumbers"</li>
<li>// used getFullYear().toString and this.getDate() to set Year and Day values&nbsp;</li>
<li>SET this.ISO_8601 property = year+monthNumbers(this.getMonth())+day</li>
<li>}</li>
</ol>
<li>CALL&nbsp;your new&nbsp;method on the instance of Date that you are working with, to set the value of your new property.</li>
<ol>
<li>var&nbsp;date = new Date();</li>
<li>date.getISO();</li>
</ol>
<li>ACCESS the value of the new&nbsp;property that you have added anywhere in your js code</li>
<ol>
<li>date.ISO_8601</li>
</ol></ol>
<h2>[reference]</h2>
<ol>
<li>] <a href="http://www.w3schools.com/jsref/jsref_obj_date.asp">http://www.w3schools.com/jsref/jsref_obj_date.asp</a>&nbsp;-</li>
<li>] <a href="http://www.javascriptkit.com/jsref/date.shtml">http://www.javascriptkit.com/jsref/date.shtml</a>&nbsp;-</li>
<li>] scripts/money.js - full source code</li>
<li>] CC to -&nbsp;js-OOP -</li>
</ol>

~ view article ~ Chapter] ch-007-feature-objects-LANGUAGE FROM [ Book] language-javascript IN [ libraries] technology-developer-www