<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<html xmlns= "http://www.jzread.com/1999/xhtml" >
<head id= "Head1" runat= "Server" >
<title> Password strength test </title>
</head>
<script language= "javascript" type= "Text/javascript" >
//charmode function
//test what kind of character it belongs to.
function Charmode (in) {
if (in>=48 && in <=57)//Digital
return 1;
if (in>=65 && in <=90)//Capital Letter
return 2;
if (in>=97 && in <=122)//lowercase
return 4;
Else
return 8; Special character
}
//bittotal function
//Calculates how many patterns there are in the current password
function bittotal (num) {
modes=0;
for (i=0;i<4;i++) {
if (num & 1) modes++;
num>>>=1;
}
return modes;
}
//checkstrong function
//Returns the strength level of the password
function Checkstrong (sPW) {
if (spw.length<=4)
return 0; Password is too short
modes=0;
for (i=0;i<spw.length;i++) {
//test the category of each character and count how many patterns there are.
Modes|=charmode (Spw.charcodeat (i));
}
return Bittotal (Modes);
}
//pwstrength function
////When the user releases the keyboard or password input box to lose focus, display different colors according to different levels
function Pwstrength (pwd) {
o_color= "#e0f0ff";
l_color= "#FF0000";
m_color= "#FF9900";
h_color= "#33CC00";
if (pwd==null| | pwd== ') {
Lcolor=mcolor=hcolor=o_color;
}
Else
{
S_level=checkstrong (PWD);
//alert (S_level);
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;
return;
}
</script>
<body>
<form id= "Form1" >
<div>
Enter Password: <input type= "text" id= "TextBox1" onkeyup= "Pwstrength (this.value)" onblur= "Pwstrength (this.value)" >< Br>
Password Strength:
<table border= "1" cellpadding= "1" bordercolordark= "#fdfeff" bordercolorlight= "#99ccff"
cellspacing= "1" style= "width:200px; Display:inline; Background-color: #e0f0ff ">
<tr>
<td id= "strength_l style=" width:100px; HEIGHT:19PX "align=" center ">
Weak
</td>
<td id= "Strength_m style=" width:100px; HEIGHT:19PX "align=" center ">
</td>
<td id= "Strength_h style=" width:100px; HEIGHT:19PX "align=" center ">
Strong
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
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