<html>
<head>
<script language=
"javascript"
>
function
CharMode(iN){
if
(iN>=48 && iN <=57)
return
1;
if
(iN>=65 && iN <=90)
return
2;
if
(iN>=97 && iN <=122)
return
4;
else
return
8;
}
function
bitTotal(num){
modes=0;
for
(i=0;i<4;i++){
if
(num & 1) modes++;
num /= 2;
}
return
modes;
}
function
checkStrong(sPW){
if
(sPW.length<=4)
return
0;
Modes=0;
for
(i=0;i<sPW.length;i++){
Modes|=CharMode(sPW.charCodeAt(i));
}
return
bitTotal(Modes);
}
function
pwStrength(pwd){
O_color=
"#eeeeee"
;
L_color=
"#FF0000"
;
M_color=
"#FF9900"
;
H_color=
"#33CC00"
;
if
(pwd==null||pwd==
''
){
Lcolor=Mcolor=Hcolor=O_color;
}
else
{
S_level=checkStrong(pwd);
switch
(S_level) {
case
0:
Lcolor=Mcolor=Hcolor=O_color;
case
1:
Lcolor=L_color;
Mcolor=Hcolor=O_color;
break
;
case
2:
Lcolor=Mcolor=M_color;
Hcolor=O_color;
break
;
default
:
Lcolor=Mcolor=Hcolor=H_color;
}
}
document.getElementById(
"strength_L"
).style.background=Lcolor;
document.getElementById(
"strength_M"
).style.background=Mcolor;
document.getElementById(
"strength_H"
).style.background=Hcolor;
}
</script>
</head>
<body>
<form>
输入密码:<input type=
"password"
size=
"10"
onKeyUp=
"pwStrength(this.value)"
onBlur=
"pwStrength(this.value)"
>
<br>密码强度:
<table width=
"217"
border=
"1"
cellspacing=
"0"
cellpadding=
"1"
bordercolor=
"#cccccc"
height=
"20"
>
<tr align=
"center"
bgcolor=
"#eeeeee"
>
<td width=
"33%"
id=
"strength_L"
>弱</td>
<td width=
"33%"
id=
"strength_M"
>中</td>
<td width=
"33%"
id=
"strength_H"
>强</td>
</tr>
</table>
</form>
</body>
</html>