can I use document.prototype.getElementById to get an element in another element

can I use document.prototype.getElementById to get an element in another
element

References

Reference NO 1

http://stackoverflow.com/questions/15204415/can-i-use-document-prototype-getelementbyid-to-get-an-element-in-another-element

Reference NO 2

http://stackoverflow.com/questions/3387427/javascript-remove-element-by-id

Reference NO 3

http://davidwalsh.name/javascript-attributes

Reference NO 4

http://www.w3schools.com/js/js_htmldom_elements.asp

Reference NO 5

http://prototypejs.org/doc/latest/dom/dollar-dollar/

Reference NO 6

https://developer.mozilla.org/en-US/docs/Web/API/EventTarget.addEventListener

Reference NO 7

https://www.inkling.com/read/javascript-definitive-guide-david-flanagan-6th/chapter-15/selecting-document-elements

Reference NO 8

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