How To Access HTML attributes using the DOM

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Among the many talents of the DOM is its ability to retrieve and modify attributes inside HTML elements. Using just a small set of methods, you can intuitively get the width of a DIV, change the src of an image, or even remove the background image of the document!
The DOM supplies the following 3 methods to tackle HTML attributes:
-getAttribute()
-setAttribute()
-removeAttribute()
These methods can be used on any element that supports attributes.  more...