Mootools to jquery object issue

Question

I am converting a Mootools snip to jQuery and have an issue with value being returned as an object.

Mootools code

aVariable: function (elems, locks, hiddenInput, elem) {
    initialValue = '';
    if (elem) {
        var val = elem.get('value').toFloat().round(2);
        var v = val ? val : '0';
        elem.set({
            'value': v
        });
        Serialize.verifyInput(elems, elem, locks);
    }
}

jquery bad try

aVariable: function (elems, locks, hiddenInput, elem) {
    initialValue = '';
    if (elem) {
        var val = $(elem).get('value').toFloat().round(2);
        var v = val ? val : '0';
        $(elem).val(v);
        Serialize.verifyInput(elems, elem, locks);
    }
}

I know that $(elem) or $(this) returns an object where in Moo elem returns the string can someone shed some light on this please. Thank you!

Answer 1

As you might know, jQuery and Mootools can exist in the same page, anyway to answer your question, try this:

aVariable: function (elems, locks, hiddenInput, elem) {
    initialValue = '';
    var round = function (inputValue, precision) {
        precision = Math.pow(10, precision || 0).toFixed(precision < 0 ? -precision : 0);
        return Math.round(inputValue * precision) / precision;
    }
    if (elem) {
        var val = round(parseFloat(elem.value),2);
        var v = val ? val : '0';
        elem.value = v;
        Serialize.verifyInput(elems, elem, locks);
    }
}