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Tuesday, March 7, 2017

MooTools - Style Properties

MooTools provides some Special methods to set and get style property values for DOM elements. We use different style properties such as width, height, background color, font weight, font color, border, etc. By setting and getting different values to these style properties, we can present HTML elements in different styles.

Set and Get Style Properties

MooTools library contains different methods which are used to set or get the value of a particular style property or multiple style properties.

setStyle()

This method allows you to set the value for a single property of DOM element. This method will work on the selector object of a particular DOM element. Let us take an example that provides background color for div element. Take a look at the following code.
Example
<!DOCTYPE html>
<html>

   <head>
      <script type = "text/javascript" src = "MooTools-Core-1.6.0.js"></script>
      <script type = "text/javascript" src = "MooTools-More-1.6.0.js"></script>
      
      <script type = "text/javascript">
         window.addEvent('domready', function() {
            $('body_wrap').setStyle('background-color', '#6B8E23');
            $$('.class_name').setStyle('background-color', '#FAEBD7');
         });
      </script>
   </head>
   
   <body>
      <div id = "body_wrap">A</div>
      <div class = "class_name">B</div>
      <div class = "class_name">C</div>
      <div class = "class_name">D</div>
      <div class = "class_name">E</div>
   </body>
   
</html>
You will receive the following output −
Output

getStyle()

getStyle() method is to retrieve the value of a style property of an element. Let us take an example that retrieves the background-color of a div named body_wrap. Take a look at the following syntax.
Syntax
//first, set up your variable to hold the style value
var styleValue = $('body_wrap').getStyle('background-color');

Multiple Style Properties

MooTools library contains different methods used to set or get the value of a particular style property or multiple style properties.

setStyle()

If you want to set multiple style properties on a single element or an array of elements then you have to use the setStyle() method. Take a look at the following syntax of the setStyle() method.
Syntax
$('<element-id>').setStyles({
   //use different style properties such as width, height, background-color, etc.
});
Example
<!DOCTYPE html>
<html>

   <head>
      <style>
         #body_div {
            width: 200px;
            height: 200px;
            background-color: #eeeeee;
            border: 3px solid #dd97a1;
         }
      </style>
      
      <script type = "text/javascript" src = "MooTools-Core-1.6.0.js"></script>
      <script type = "text/javascript" src = "MooTools-More-1.6.0.js"></script>
      
      <script type = "text/javascript">
         var setWidth = function(){
            $('body_div').setStyles({
               'width': 100
            });
         }
         var setHeight = function(){
            $('body_div').setStyles({
               'height': 100
            });
         }
         var reset = function(){
            $('body_div').setStyles({
               'width': 200,
               'height': 200
            });
         }
         
         window.addEvent('domready', function() {
            $('set_width').addEvent('click', setWidth);
            $('set_height').addEvent('click', setHeight);
            $('reset').addEvent('click', reset);
         });
      </script>
   </head>
   
   <body>
      <div id = "body_div"> </div><br/>
      <input type = "button" id = "set_width" value = "Set Width to 100 px"/>
      <input type = "button" id = "set_height" value = "Set Height to 100 px"/>
      <input type = "button" id = "reset" value = "Reset"/>
   </body>
   
</html>
You will receive the following output −
Output
Try these buttons on the web page, you can see the difference with the div size.
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