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Coding JavaScript for Mobile Browsers (part 9) - Scripting Styles

1/15/2011 4:11:42 PM

4. Scripting Styles

Changing content with JavaScript is useful, but sometimes it’s easier to use styles from JavaScript to make things appear and disappear and change their appearance.

4.1. Changing styles

With DOM support, we can read and dynamically change every inner CSS style using style and its subproperties, like backgroundColor, textAlign, and margin. We can also change CSS styles using the className property of every element. Table 20 explores which browsers support changing the class, removing the class, and applying multiple classes using a space (e.g., class1 class2).

Table 20. Changing CSS dynamically compatibility table
Browser/platformSupport for changing styles and classes dynamically
SafariYes
Android browserYes
Symbian/S60Yes
Nokia Series 40No before 6th edition
webOSYes
BlackBerryNo before 4.6
NetFrontYes
Internet ExplorerYes
Motorola Internet BrowserPartial
Opera MobileYes
Opera MiniYes

4.2. Showing and hiding styles

Table 21 shows which browsers support showing and hiding block content using element.style.display='none' or element.style.display='block'. We can also use style.visibility, but in this case the block will still occupy the box without showing its contents.

Table 21. Showing and hiding elements compatibility table
Browser/platformSupport for showing/hiding content
SafariYes
Android browserYes
Symbian/S60Yes
Nokia Series 40No before 6th edition
webOSYes
BlackBerryNo before 4.6
NetFrontYes
Internet ExplorerYes
Motorola Internet BrowserNo
Opera MobileYes
Opera MiniYes

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