html javascript button onclick code example

Example 1: javascript onclick

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

Example 2: how to add onclick event in javascript

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

Example 3: javascript onclick button

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

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Misc Example

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