Text Box Integer Validation

Question

I need to create a code in HTML/Javascript that will allow a user to enter an answer to a maths question and then the site needs to validate whether that answer is correct.

Been playing around for a few hours and researched the web but not found anything close.

Any help is appreciated!!

Answer 1

You could use javascript for validation,

Look at this example.

var value = Number(intfield.value);
if (Math.floor(value) == value) {
    // value is an integer, do something based on that
} else {
    // value is not an integer, show some validation error
}

checking if value of a textfield is integer in javascript

Answer 2

Javascript validation

function isInteger(number) {
    var getVal = parseInt(number);
    if (number.length == 0 || getVal == Number.NaN || getVal <= 0) {
        return false;
    }
    return true;
}