Add text to the newly created div using JavaScript

Why would I add text with JS if could do it with HTML ?! I'm looking to add a caret on click so client can add their text on the window

That was concise and helpful. keep it up

HI
i have Q about javascript! specifically the appending part!

when i type the code:

<button id="textappender">click here!</button>

<div id="add">everything is...<div>
.........................................................

document.getElementById("textappender").onclick=function(){

document.getElementById("add").innerHTML=

document.getElementById("add").innerHTML + "awesome!";
}

i got the word "awesome"over and over

like:

(everything is..."awesome!"awesome!"awesome!"awesome!"awesome!"awesome!"awesome!.)
how can i make it shows only once!
can you help please ^^?