how to use onclick event code example
Example 1: javascript onclick
document.getElementById("myBtn").addEventListener("click", function() {
alert("Hello World!");
});
Example 2: onclick="to Function()
<button onclick="topFunction()" id="myBtn" title="Go to top">Top</button>
<script>
var mybutton = document.getElementById("myBtn");
window.onscroll = function() {scrollFunction()};
function scrollFunction() {
if (document.body.scrollTop > 20 || document.documentElement.scrollTop > 20) {
mybutton.style.display = "block";
} else {
mybutton.style.display = "none";
}
}
function topFunction() {
document.body.scrollTop = 0;
document.documentElement.scrollTop = 0;
}
</script>
Example 3: 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>
function skriv(name) {
document.getElementById(name).style.backgroundColor='red';
}