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Question & Réponse
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How to check if a number is a float or integer value

How to check if a number is a float or integer value

Javascript
Développement front-end

function checkNumber(x) {
    // check if the passed value is a number
    if(typeof x == 'number' && !isNaN(x)){
        // check if it is integer
        if (Number.isInteger(x)) {
            console.log(`${x} is integer.`);
        }
        else {
            console.log(`${x} is a float value.`);
        }
    } else {
        console.log(`${x} is not a number`);
    }
}
checkNumber('hello');
checkNumber(44);
checkNumber(3.4);
checkNumber(-3.4);
checkNumber(NaN);