Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<body>

Search: <input type="search" id="mySearch"><br><br>

<button onclick="disableBtn()">Disable Search Field</button>
<button onclick="undisableBtn()">Undisable Search Field</button>

<script>
function disableBtn() {
    document.getElementById("mySearch").disabled = true;
}
function undisableBtn() {
    document.getElementById("mySearch").disabled = false;
}
</script>

</body>
</html>