var re = new RegExp(/^(?=.{8,50}$)(?=(.*?[a-z].*?[A-Z])|(.*?[a-z].*?[0-9])|(.*?[a-z].*?[!@#$%^&*()_+])|(.*?[A-Z].*?[0-9])|(.*?[A-Z].*?[!@#$%^&*()_+])|(.*?[0-9].*?[!@#$%^&*()_+])).*$/);

var test1 = '1234567', //  less than 8 characters

    test2 = 'aaaaaaaa', //  no  number & no special character

    test3 = 'aaaaaaa1', //  no special character

    test4 = 'aaaAaa#1', //  One special character and one CAPS

    test5 = 'abcdefghigklmnopqrstuvwxyz123456789033212312121212121212121221212', //  more than 50 characters

    test6 = 'aaaaaaaAA';//one small and one caps letter

​

$('body').append('<p>1234567    <strong>' + re.test(test1).toString().toUpperCase() + '</strong></p>');

$('body').append('<p>aaaaaaaa    <strong>' + re.test(test2).toString().toUpperCase() + '</strong></p>');

$('body').append('<p>aaaaaaa1    <strong>' + re.test(test3).toString().toUpperCase() + '</strong></p>');

$('body').append('<p>abcdefghigklmnopqrstuvwxyz1234567890332123    <strong>' + re.test(test5).toString().toUpperCase() + '</strong></p>');

$('body').append('<p>aaaAaa#1    <strong>' + re.test(test4).toString().toUpperCase() + '</strong></p>');

$('body').append('<p>aaaaaaaAA    <strong>' + re.test(test6).toString().toUpperCase() + '</strong></p>');