what 's the meaning of this paragraf

[runeveryday]

Traversal also aids developers in affecting the elements immediately surrounding an element that is being

manipulated or otherwise utilized by a script. This can range from adding a class to parent elements to

indicate activity to disabling all inactive form elements to any number of other useful tasks.

can't understand the above,the paragraf  is from a book.anyone helps.thank you,

[RussellReal]

paragraph* more to your question..

 

a parent element is an element which contains another element

 

 

<div>
  <span></span>
</div>

 

span's parent is div..

 

traversal is basically moving from element to element..

 

it basically says javascript makes it easy to traverse element to element even from a certain point.. E.G. getting <span>'s parent would be as simple as..

 

document.getElementsByTagName('span')[0].parentNode;

 

so when you read that paragraph just think traversal as moving from one element to another.. or between, outward and inward..