Jquery Examples - Basic Level

jQuery append()
Insert content at the end of the selected HTML elements.
Demo:
http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_html_append

jQuery prepend()
Insert content at the beginning of the selected HTML elements.
Demo:
http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_html_prepend

jQuery empty()
Remove all child elements of the selected element(s).
Demo:
http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_dom_empty

jQuery hide()
Another hide demonstration. How to hide parts of text.
Demo:
http://www.w3schools.com/jquery/tryit.asp?filename=tryjquery_hide_explanations

jQuery focus() and blur()
The focusin event is sent to an element when it, or any element inside of it, gains focus. This is distinct from the focus event in that it supports detecting the focus event on parent elements (in other words, it supports event bubbling).
Demo:
http://jsfiddle.net/pAp4E/