input onchange js code example

Example 1: onchange js

<script>
document.getElementById("fname").addEventListener("change", myFunction);

function myFunction() {
  var x = document.getElementById("fname");
  x.value = x.value.toUpperCase();
}
</script>

Example 2: javascript input onchange get value

var element = document.getElementById("myInput");
element.onchange = function() {
  console.log(element.value);
}

Example 3: on change event html not working

onchange is only triggered when the control is blurred. Try onkeypress instead.

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Html Example

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