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js密碼強度校正，js強度校正
現在很多論壇和部落格都在使用者註冊時添加了驗證密碼強度的功能，在以前的文章中，我們曾經給出過一段檢驗密碼強度的例子，今天再看一個與《js密碼強度校正》的代碼。
效果：
<html><head><script language="javascript">//CharMode函數//測試某個字元是屬於哪一類.function CharMode(iN){ if (iN>=48 && iN <=57) //數字 return 1; if (iN>=65 && iN <=90) //大寫字母 return 2; if (iN>=97 && iN <=122) //小寫 return 4; else return 8; //特殊字元}//bitTotal函數//計算出當前密碼當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 /= 2; } return modes;}//checkStrong函數//返回密碼的強度層級function checkStrong(sPW){ if (sPW.length<=4) return 0; //密碼太短 Modes=0; for (i=0;i<sPW.length;i++){ //測試每一個字元的類別並統計一共有多少種模式. Modes|=CharMode(sPW.charCodeAt(i)); } return bitTotal(Modes);}//pwStrength函數//當使用者放開鍵盤或密碼輸入框失去焦點時，根據不同的層級顯示不同的顏色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>輸入密碼:<input type="password" size="10" onKeyUp="pwStrength(this.value)" onBlur="pwStrength(this.value)"><br>密碼強度: <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">強</td> </tr> </table></form></body></html>
以上就是為大家分享的js密碼強度校正的全部代碼，希望對大家的學習有所協助。
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