如何在java脚本中没有任何点击事件的情况下将div显示为弹出窗口？

Question

I want to setup a popup with an event listener rather than using the onclick function. My project is a calender and when I select a day I want it to show a div as pop up.

Answer 1

This question is pretty basic, checkout W3School .

myFunction(){
...
}

var element = document.getElementById("myPopUp");
element.addEventListener("click", myFunction());