Javascript DOM onkeyup Event and onkeydown event

Introduction

Using "onkeydown" together with the "onkeyup" event:

Press and hold down a key inside the text field to set a red background color.

Release the key to set a green background color.

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<!DOCTYPE html>
<html>
<body>
<input type="text" id="demo" onkeydown="keydownFunction()" onkeyup="keyupFunction()">

<script>
function keydownFunction() {/* w ww . j a  v  a2s  . co m*/
  document.getElementById("demo").style.backgroundColor = "red";
}

function keyupFunction() {
  document.getElementById("demo").style.backgroundColor = "green";
}
</script>

</body>
</html>



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