Validate an input string if it is inside ASCII 32 - 126 range

chkASCII32_126.js

/**
 * Validate an input string if it is inside ASCII 32 - 126 range
 * @param string
 * @return true if all characters in the string are in range, else false 
 */
var chkASCII32_126 = function(string) {
    return !string.match(/[^\x20-\x7e]/g);
}

$(".chorusASCIIValidation").keyup(function() {
    var $th = $(this);

    if (! chkASCII32_126($th.val())) {
        if (! $th.hasClass("error")) $th.addClass("error").parent().after("<label id='msg-error' class='error valid'>Please Enter a valid character. eg: A-Z a-z 0-9 . _ -</label>");
    } else {
        if ($(this).hasClass('error')) {
            $(this).removeClass("error").parent().siblings('.error').remove();
        }
    }
});