Answers for "add on click event javascript"

how to add onclick event in javascript

var element = document.getElementById("elem");
element.onclick = function(event) {
  console.log(event);
}

js addeventlistener click

document.getElementById("ELEMENT_ID").addEventListener("click", function() {
  //insert here the code to be executed
});

javascript onclick button

var button = document.querySelector('button');
button.onclick = function() {
  //do stuff
}

calling function on click html

<img src="hospital.png" id="hospitals" onclick="damarkers();">