Form Validation 6
<html>
<body>
<form>
<label for="fname">First name:</label><br>
<input type="text" id="fname" name="fname"><br>
<label for="lname">Last name:</label><br>
<input type="text" id="lname" name="lname"><br>
<label for="lname">Country:</label><br>
<input type="text" id="country" name ="country"></br></br>
<input type="button" value="Submit" id="myBtn" onmouseover="myFunction();">
</form>
<script>
function myFunction() {
let a = document.getElementById("fname").value;
let b = document.getElementById("lname").value;
let c = document.getElementById("country").value;
if(a=="" || b=="" || c== "")
document.getElementById("myBtn").disabled = true;
else
document.getElementById("myBtn").disabled=false;
}
</script>
</body>
</html>
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