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addClass function

/ Published in: JavaScript
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Description: A function that add a class to an element if the element doesn't have anyone, if it already has one, add a new class name.
Arguments: The elemento to which you want to add the class and the name of the class you want to add.

From book Dom Scripting by Jeremy Keith.

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Copy this code and paste it in your HTML 
  1. function addClass(element,value) {
  2.    if (!element.className) {
  3.       element.className = value;
  4. } else {
  5.    newClassName = element.className;
  6.    newClassName+= " ";
  7.    newClassName+= value;
  8.    element.className = newClassName;
  9.    }
  10. }

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