javascript - How to clear effect of a click button using jquery -

i doing shown bellow:

$("#btn1").click(function(){     $('<div></div>').appendto('body'); }); 

it appends division again , again when click it, want when click other button there should no effect of "btn1" means want clear effect of first button after click second one.

how can this?

why not add class div btn1 adds:

$("#btn1").click(function() {     $("<div class='new-div'></div>").appendto('body'); }); 

then second button can remove -

$("#btn2").click(function() {     $(".new-div").remove(); });