File: documentation/pages/initializing.php

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File: documentation/pages/initializing.php
Role: Auxiliary data
Content type: text/plain
Description: Auxiliary data
Class: jQuery Calx
Calculate form input values based on formulas
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Last change: Update of documentation/pages/initializing.php
Date: 1 year ago
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<!-- initialize --> <a name="initialize"></a><br><br> <div class="row page-header" style="margin-top:0"> <div class="col-md-12"> <h3> Initializing </h3> </div> </div> <div class="row"> <div class="col-md-12"> <p> The very first step to enable jQuery Calx, is to load jQuery and the jQuery Calx itself </p> <pre><code>&lt;script type="text/javascript" src="path/to/jquery-1.10.2.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="path/to/jquery-calx-2.0.0.min.js"&gt;&lt;/script&gt; </code></pre> <p> Like any other jQuery plugin, it is easy to initialize jQuery Calx, you just need to prepare the element with configured <code>data-cell</code>, <code>data-formula</code>, or <code>data-format</code> attribute and call <code>$('selector').calx()</code> to enable jQuery Calx. </p> <p> We are using <code>data-cell</code> attribute to define the cell address, <code>data-formula</code> attribute to define the calculation formula, and <code>data-format</code> attribute to define formatting rule, and then, let jQuery Calx do the magic. </p> <p> Once jQuery Calx is initialized, it will respond to any changes occured in cell's element, and do the calculation based on the cell value and formula, let's see below example: </p> <div class="highlight"> <pre> &lt;form id="sheet"&gt; &lt;input type="text" data-cell="A1"&gt; &lt;br&gt; &lt;input type="text" data-cell="A2"&gt; &lt;br&gt; &lt;input type="text" data-cell="A3"&gt; &lt;br&gt; &lt;input type="text" data-cell="A4" data-formula="SUM(A1:A3)"&gt; &lt;/form&gt; &lt;script&gt; $('#sheet').calx(); &lt;/script&gt; </pre> </div> <p> In the above sample code snippet, <code>A4</code> will display whatever result of <code>SUM(A1:A3)</code>, any change occured in <code>A1</code>, <code>A2</code>, or <code>A3</code> will be represented in <code>A4</code> since <code>A4</code> depend on cell ranged from <code>A1</code> to <code>A3</code>. </p> <p> If you are familiar with any spreadsheet application like Microsoft Excel or LibreOffice, you will also get familiar with jQuery Calx. We use term <code>sheet</code> for wrapper element like <code>form#sheet</code> where the jQuery Calx is initialized, and <code>cell</code> for all element inside the <code>form#sheet</code> that involved in calculation process, this mean all element that has <code>data-cell</code> and/or <code>data-formula</code> attribute. </p> <p> In case <code>data-formula</code> attribute present without <code>data-cell</code> attribute, jQuery Calx will assign reserved cell address prefixed with <code>CALX</code> and count the index incrementally, the resulting cell address will be like <code>CALX1</code>, <code>CALX2</code>,<code>CALX3</code>,<code>CALX4</code> </p> </div> </div>