Maximum allowed value for <input type="text"/>

Question

I have this input field:

<input type="text"/>

How can I allow entering only a number that is not greater than some predefined value, like for example 10, so every attempt to enter a number greater than 10 won't be allowed?

Answer 1

Javascript

function createValidator(element) {
    return function() {
        var min = parseInt(element.getAttribute("min")) || 0;
        var max = parseInt(element.getAttribute("max")) || 0;

        var value = parseInt(element.value) || min;
        element.value = value; // make sure we got an int

        if (value < min) element.value = min;
        if (value > max) element.value = max;
    }
}

var elm = document.body.querySelector("input[type=number]");
elm.onkeyup = createValidator(elm);

HTML

<input type="number" min="0" max="10"></input>

I haven't tested it, but I think it should work.