用戶輸入密碼的強(qiáng)度

2019-11-21 02:34:15

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供稿：網(wǎng)友

<P><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE> New Document </TITLE><META NAME="Generator" CONTENT="EditPlus"><meta name="author" content="http://m.survivalescaperooms.com/"/><META NAME="Keywords" CONTENT=""><META NAME="Description" CONTENT=""></HEAD></P><P><script language=javascript></P><P>//程序設(shè)計(jì):環(huán)球萬維,專業(yè)提供虛擬主機(jī),域名注冊(cè)服務(wù)//網(wǎng)址:<a href="http://www.netInter.cn" target="_blank">http://www.netInter.cn</a>//本程序是環(huán)球萬維原創(chuàng)程序,若需轉(zhuǎn)載,請(qǐng)注明網(wǎng)址及出處,謝謝.//以上信息與文章正文是不可分割的一部分,所以如果您要轉(zhuǎn)載本文章,您必須保留以上信息.</P><P>//CharMode函數(shù)//測(cè)試某個(gè)字符是屬于哪一類.function CharMode(iN){if (iN>=48 && iN <=57) //數(shù)字return 1; if (iN>=65 && iN <=90) //大寫字母return 2;if (iN>=97 && iN <=122) //小寫return 4;elsereturn 8; //特殊字符}</P><P>//bitTotal函數(shù)//計(jì)算出當(dāng)前密碼當(dāng)中一共有多少種模式function bitTotal(num){modes=0;for (i=0;i<4;i++){if (num & 1) modes++;num>>>=1;}return modes;}</P><P>//checkStrong函數(shù)//返回密碼的強(qiáng)度級(jí)別</P><P>function checkStrong(sPW){if (sPW.length<=4)return 0; //密碼太短Modes=0;for (i=0;i<sPW.length;i++){  //測(cè)試每一個(gè)字符的類別并統(tǒng)計(jì)一共有多少種模式.Modes|=CharMode(sPW.charCodeAt(i));}</P><P>return bitTotal(Modes);</P><P>} </P><P>//pwStrength函數(shù)//當(dāng)用戶放開鍵盤或密碼輸入框失去焦點(diǎn)時(shí),根據(jù)不同的級(jí)別顯示不同的顏色</P><P>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;  }} </P><P>document.getElementById("strength_L").style.background=Lcolor;document.getElementById("strength_M").style.background=Mcolor;document.getElementById("strength_H").style.background=Hcolor;return;}</P><P></script></P><P><BODY><form name=form1 action="" >輸入密碼:<input type=password size=10 onKeyUp=pwStrength(this.value) onBlur=pwStrength(this.value)>密碼強(qiáng)度:<table width="217" border="1" cellspacing="0" cellpadding="1" bordercolor="#cccccc" height="23" style='display:inline'>  <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">強(qiáng)</td>  </tr></table></P><P></form></P><P></BODY></HTML></P><P> </P>

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