element onclick javascript code example

Example 1: javascript onclick

document.getElementById("myBtn").addEventListener("click", function() {
  alert("Hello World!");
});

Example 2: javascript onclick

var myElem = document.getElementByID('ElemID');
myElem.onclick = function() {
	//do stuff
}

Example 3: html js button onclick

// In HTML:
// <button id="buttonID" onclick="yourJSFunction()">Text</button>

// In JavaScript:
function yourJSFunction() {
  // Do stuff
 }