JSFiddle - React, Tailwind, and code Playground

HTML

<div style="height:200px;width=200px;background-color:white;" id="myDiv"></div>
<button id="myButton">asdfasdfsdf</button>

JavaScript

var myButton = dojo.byId("myButton"),
    myDiv = dojo.byId("myDiv");
 
dojo.connect(myButton, "mouseover", function(evt){
    dojo.style(myDiv, "backgroundColor", "blue");
});

dojo.connect(myButton, "click", function(evt){
    dojo.style(myDiv, "backgroundColor", "yellow");
});

myButton.click();//works

myButton.mouseover();//doesn't work