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Step 2. Specify the Layout

Then, we will specify the layout of our app. It will have the following elements:

  1. A grid with the data.
  2. A chart that will represent this data.
  3. A form that will allow end users to manage data displayed in the chart.

To organize the declared elements on the page, we will use the dhtmlxLayout component.

To specify the app's layout:
  1. Initialize a layout on the page using the dhtmlXLayoutObject() constructor (use the dhtmlxEvent() function to provide your script as a handler of the 'onload' HTML event):

    'index.html' file

    <!DOCTYPE html>
         <title>Dynamic Chart</title>
         <script src="codebase/dhtmlx.js" type="text/javascript"></script>
         <link rel="stylesheet" type="text/css" href="codebase/dhtmlx.css">
        <script type="text/javascript">
            dhtmlxEvent(window,"load",function(){             var layout = new dhtmlXLayoutObject(document.body,"3L");         });
    </script> </body> </html>
    The constructor takes 2 parameters: an HTML container for the layout and the layout's pattern. dhtmlxLayout has a big number of predefined patterns that you can choose from. For our markup, we've choosen the one called '3L'.

  2. Specify the following style for the layout's container, to guarantee that the layout will be rendered correctly in the full-screen mode:

    'index.html' file

        html, body {
            width: 100%;      /*provides the correct work of a full-screen layout*/ 
            height: 100%;     /*provides the correct work of a full-screen layout*/
            overflow: hidden; /*hides the default body's space*/
            margin: 0px;      /*hides the body's scrolls*/
  3. Add the following code to the "index.html " file to configure the layout:

    'index.html' file

        var layout = new dhtmlXLayoutObject(document.body, "3L");
        layout.cells("a").setWidth(270);        //sets the width of the 'form' cell      layout.cells("a").setText("Profit & Loss reports");//sets the form's header      layout.cells("b").hideHeader();      //hides the header of the 'chart' cell      layout.cells("c").hideHeader();       //hides the header of the 'grid' cell  });
    To refer to a layout's cell, the cells method is used. The method takes the cell's id as a parameter and returns the cell's object. By default, cells have 1-letter ids taken in the alphabetical order

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