Question

In: Computer Science

JAVASCRIPT HTML I'm looking to make a function that will take a postal code in a...

JAVASCRIPT HTML

I'm looking to make a function that will take a postal code in a text box. The function jobs is to basically make sure the first letter of the postal code starts with these letters. ('A') ('N") ('W') ('F'). If the first letter of the postal code does not match up then an error to the user is sent.

Expert Solution

HTML File :

<!DOCTYPE html>

<head>

<title>Postal Code Check</title>

</head>

<body>

<label for="postalCode">Postal Code</label>

<br>

//function jobs

function jobs()

{

//This line will take the postal code entered by user

var postalCode=document.getElementById("txtPostalCode").value;

//This line will take first character of postal code

var firstChar=postalCode.charAt(0);

//checking first character

if(firstChar.toUpperCase()=='A'||firstChar.toUpperCase()=='N'||firstChar.toUpperCase()=='W'||firstChar.toUpperCase()=='F')

{

//when first character is either A,N,W,F then postal code is valie

document.getElementById("myDiv").innerHTML="Postal code "+postalCode+" is valid";

}

else{

//when first character is not any of A,N,W,F then postal code is valie

document.getElementById("myDiv").innerHTML="Postal code "+postalCode+" is invalid";

}

</script>

</body>

</html>

=============================================

Screen when postal code is valid :

Screen when postal code is invalid :

venereology answered 6 months ago

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