js中密碼驗證

function chkpwd(obj) { var t = obj.value; var id = getResult(t); //定義對應的消息提示 var msg = new Array(4); msg[0] = "密碼過短!"; msg[1] = "密碼安全性差!"; msg[2] = "密碼安全性良好!"; msg[3] = "密碼安全性高!"; var sty = new Array(4); sty[0] = -45; sty[1] = -30; sty[2] = -15; sty[3] = 0; var col = new Array(4); col[0] = "gray"; col[1] = "red"; col[2] = "#ff6600"; col[3] = "Green"; //設置顯示效果 var bImg = "../inc/images/pwdstate.gif"; //一張顯示用的圖片 var sWidth = 176; var sHeight = 15; var Bobj = document.getElementById("chkResult"); Bobj.style.fontSize = "12px"; Bobj.style.color = col[id]; Bobj.style.width = sWidth + "px"; Bobj.style.height = sHeight + "px"; Bobj.style.lineHeight = sHeight + "px"; Bobj.style.background = "url(" + bImg + ") no-repeat left " + sty[id] + "px"; Bobj.style.textIndent = "20px"; Bobj.innerHTML = "檢測提示：" + msg[id]; } //定義檢測函數,返回0/1/2/3分別代表無效/差/一般/強 function getResult(s) { if (s.length < 4) { return 0; } var ls = 0; if (s.match(/[0-9]/ig)) { ls++; } if (s.match(/[a-z]/ig)) { ls++; } if (s.match(/[a-z0-9]/ig)) { ls++; } if (s.length < 6 && ls > 0) { ls--; } return ls }

<div id="chkResult">密碼安全檢測</div>