$("element").text("newValue")

element is the tag represented. It can also be its id or class.

newValue is the value you want to set it to.

e.g

$("div").text("Hello")// changes the text of the element div to Hello

$(".div").text("Hello")// changes the text of the element(s) with class div to Hello

$("#div").text("Hello")// changes the text of the element with id div to Hello