Write a synchronous validator which checks whether a field contains exactly six characters.
Write a synchronous validator which checks whether a field contains exactly six characters.
Homework Answers
Synchronous validator which checks whether a field contains exactly six characters :-
Save the below code in a .html file and open in a browser.
HTML File :-
<!DOCTYPE html>
<html>
<script>
function checkValue()
{
var val1 =
document.getElementById('val1');
var message =
document.getElementById('error-nwl');
var goodColor = "#66cc66";
var badColor = "#ff6666";
if(val1.value.length == 6)
{
val1.style.backgroundColor = goodColor;
message.style.color =
goodColor;
message.innerHTML =
"character number ok!"
}
else
{
val1.style.backgroundColor = badColor;
message.style.color =
badColor;
message.innerHTML = "
you have to enter exactly 6 digits!"
return;
}
}
</script>
<body>
<input name="myvalue" placeholder="Enter the value" id="val1"
onkeyup="checkValue(); return false;" />
<div id="error-nwl"></div>
</body>
</html>
Output:-
Add Answer to:
Write a synchronous validator which checks whether a field
contains exactly six characters.
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