javascript onclick syntax code example
Example 1: javascript onclick
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});
Example 2: HTML button onclick
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<p>There is a hidden message for you. Click to see it.</p>
<button onclick="myFunction()">Click me!</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "Hello Dear Visitor!</br> We are happy that you've chosen our website to learn programming languages. We're sure you'll become one of the best programmers in your country. Good luck to you!";
}
</script>
</body>
</html>
Example 3: javascript click event
// EXAMPLE:
document.querySelector(`.check`).addEventListener(`click`,
function () {
console.log(document.querySelector(`.guess`).value;
}
);
// SYNTAX:
// <element-select>.addEventListener(`click`,
// function () {
// <what-you-want-to-execute-when-clicking-on-element>
// }
// );
Example 4: onclick in js
<input type="text" name="text" id="test" onmouseover="skriv('klick')">
<input type="button" name="send" value="Skicka" id="klick" onclick="skriv('test')">
<script src="lib/script.js"></script>
// in lib/script.js
function skriv(name) {
document.getElementById(name).style.backgroundColor='red';
}