JavaScript onClick Event Listener
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});
Batman
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});var element = document.getElementById("elem");
element.onclick = function(event) {
console.log(event);
}// Here you can use getElementById
// or getElementByClassName or getElementByTagName...
// Example #1
document.getElementById("button").onclick = function() {
alert("Hello World!");
}
// Example #2
let obj = document.getElementsByClassName('button');
obj.addEventListener("click", function() {
// your code here...
});
// Example #3 (getting attributes)
let obj = document.getElementById("button")
obj.onclick = function() {
obj.style.display = "none";
// or:
// obj.style = "display: none; color: #fff"
} document.getElementById("Save").onclick = function ()
{
alert("hello");
//validation code to see State field is mandatory.
}var button = document.querySelector('button');
button.onclick = function() {
//do stuff
}/*
The onclick event generally occurs when the user clicks on an element.
It allows the programmer to execute a JavaScript's function when an element
gets clicked
*/
<!DOCTYPE html>
<html>
<head>
<script>
function fun() {
alert("Welcome to the javaTpoint.com");
}
</script>
</head>
<body>
<h3> This is an example of using onclick attribute in HTML. </h3>
<p> Click the following button to see the effect. </p>
<button onclick = "fun()">Click me</button>
</body>
</html>