仅允许与数字和破折号同时也接受ctrl命令的文本字段

Question

function isNumberKey(evt) {
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode != 45 && charCode > 31 && (charCode < 48 || charCode > 57))
        return false;

    return true;
}

i have been using this function but its does not allow ctrl + commands. like ctrl + a , ctrl + c

Answer 1

May be you want to do something like this to sort it out:

function isNumberKey(evt) {
    var charCode = evt.which || event.keyCode;
    if (!evt.ctrlKey && charCode != 45 && charCode > 31 && (charCode < 48 || charCode > 57))
        return false;

    return true;
}

just check if ctrlKey is pressed, if do then only in conjunction with !evt.ctrlKey disable it.