Verify the password strength on the client and be compatible with Firefox and IE

0. The password is empty.
1. The password must be less than six characters in length, or only one combination of passwords
2. The password is more than five characters long and can be combined into two types.
3. The password must be more than five characters long and can be combined into three types.
4. The password is more than five characters long and can be combined into four types.
< Script Language = " Javascript " >
Function Evaluatepassword (word)
{
If (Word =   "" )
{
Return   0 ;
}
Else   If (Word. Length <   6 )
{
Return   1 ;
}
Else
{
Return Word. Match ( / [ - Z] ( ?! [ ^ A - Z] * [ - Z]) | [ - Z] ( ?! [ ^ A - Z] * [ - Z]) | \ D ( ?! [ ^ \ D] * \ D) | [ ^ A - Za - Z \ D] ( ?! [ - Za - Z \ D] * [^ - Za - Z \ D]) / G). length;
}
}
VaR Test =   New Array ( "" , " A_1 _ " , " Abcdef " , " Abcde123 " , " Ads23 % " , " Aa1b2 ^ & 2 " );
For ( VaR I In Test)
{
Document. Write (test [I] +   " The password strength is "   + Evaluatepassword (test [I]) +   " <Br> " );
}
</ Script >
From http://www.cnblogs.com/0009/