一些前台密码验证JS

最新推荐文章于 2020-05-25 09:40:31 发布

原创最新推荐文章于 2020-05-25 09:40:31 发布 · 1.9k 阅读

CC 4.0 BY-SA版权

<pre name="code" class="javascript">Loginmgmt = {
	passwordChecker:{
		passwordReg:/^[\w\W]{8,20}$/,
		specialReg:/[\W_]+/,
		numberReg:/[0-9]+/,
		letter:/([a-z]|[A-Z])+/,
		capLetter:/[A-Z]/,
		lowLetter:/[a-z]/,
		specialLetter:/[\W_]/,
		check:function(password){
			if (!this.passwordReg.test(password)) {
				return false;
			}
			
			if (this.isRepeat(password)) {
				return false;
			}
			
			return this.isCategoryAmountEnough(password, 3);
		},
		isCategoryAmountEnough:function(password, minCategoryAmount){
			var numIsExist = 0;
		    var letterIsExist = 0;
		    var specialIsExist = 0;
		    if (this.specialReg.test(password)) {
		    	specialIsExist = 1;
		    }
		    if (this.numberReg.test(password)) {
		    	numIsExist = 1;
		    }
		    if (this.letter.test(password)) {
		    	letterIsExist = 1;
		    }
		    return (numIsExist + letterIsExist + specialIsExist) == minCategoryAmount;
		},
		isRepeat:function(password) {
			for(var i = 0;i < password.length; i ++){
		        for(var j = i + 1; j < password.length; j ++){
		            if(password.charAt(i) == password.charAt(j)){
		                 return true;
		            }
		        }
		    }
			return false;
		},
		checkNumSeq:function(password){
			if(password){
				var len = password.length;
				for(var i = 0; i < len; ++i){
					if(i + 3 < len){
						var c1 = password.charAt(i) - 0;
						var c2 = password.charAt(i + 1) - 0;
						var c3 = password.charAt(i + 2) - 0;
						var c4 = password.charAt(i + 3) - 0;

						if(isNaN(c1) || isNaN(c2) || isNaN(c3) || isNaN(c4))
							continue;

						var m = c2 - c1;
						if(m == 1 || m == -1){
							if((c3 - c2) == m && (c4 - c3) == m)
								return true;
						}
					}
				}
			}
			return false;
		},
		isRepeat4Times:function(password){
			if(password){
				var pwd = password.toUpperCase();
				var len = pwd.length;
				for(var i = 0; i < len; ++i){
					if(i + 3 < len){
						var u1 = pwd.charAt(i);
						var u2 = pwd.charAt(i + 1);
						var u3 = pwd.charAt(i + 2);
						var u4 = pwd.charAt(i + 3);

						if(u1 == u2 && u2 == u3 && u3 == u4)
							return true;
					}
				}
			}
			return false;
		},
		isNotComplex:function(password){
			if(password){
				var comp = 0;
				if(this.capLetter.test(password))
					comp += 1;
				if(this.lowLetter.test(password))
					comp += 1;
				if(this.numberReg.test(password))
					comp += 1;
				if(this.specialLetter.test(password))
					comp += 1;
				if(comp < 3)
					return true;
			}
			return false;
		},
		checkSeqChar:function(password){
			if(password){
				var pwd = password.toUpperCase();
				var len = pwd.length;
				for(var i = 0; i < len; ++i){
					if(i + 3 < len){
						var u1 = pwd.charCodeAt(i);
						var u2 = pwd.charCodeAt(i + 1);
						var u3 = pwd.charCodeAt(i + 2);
						var u4 = pwd.charCodeAt(i + 3);
						
						var m = u2 - u1;
						if(m == 1 || m == -1){
							if((u3 - u2 == m) && (u4 - u3 == m))
								return true;
						}
					}
				}
			}
			return false;
		},
		isStartOrEndBySF:function(password){
			if(password && password.length >= 2){
				var c1 = password.charAt(0);
				var c2 = password.charAt(1);
				var c3 = password.charAt(password.length - 2);
				var c4 = password.charAt(password.length - 1);
				if((c1 == 's' || c1 == 'S') && (c2 == 'f' || c2 == 'F')){
						return true;
				}
				if((c3 == 's' || c3 == 'S') && (c4 == 'f' || c4 == 'F')){
					return true;
				}
			}
			return false;
		},
		isIncludeUsername:function(username, password){
			if(password && username){
				var idx = password.indexOf(username);
				if(idx >= 0)
					return true;
			}
			return false;
		},
		isIncludeBenWord:function(password){
			var a = Loginmgmt.benWords;
			for(var i = 0; i < a.length; ++i){
				if(this.isIncludeUsername(a[i], password))
					return true;
			}
			return false;
		}
	},

	benWords:['admin', 'pass'],

	getchgpwdUrl: function() {
	    return "https://sfpwd.sf-express.com/";
	}
};

//检验旧密码，包括长度为八位，字符不重复
function checkOldPassword(password, fieldname, username) {
    if(password == null || password == ''){
        alert( fieldname + "<spring:message code="error.checkPasswordEmpty" />");
        return false;
    }
    if(password.length < 10){
        alert( fieldname + "<spring:message code="error.checkPasswordLength" />");
        return false;
    }
    //密码复杂度要求：3种；（大写字母、小写字母、数字、特殊字符中任选3种）
    if (Loginmgmt.passwordChecker.isNotComplex(password)) {
    	alert("<spring:message code="error.checkPasswordNotComplex" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //密码中不能包含有连续四位及以上顺序(或逆序)数字；（如：密码中不能包含1234或3210等）
    if (Loginmgmt.passwordChecker.checkNumSeq(password)) {
    	alert("<spring:message code="error.checkPasswordSeq" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //密码中不能包含有连续四位及以上顺序(或逆序)字母，字母不区分大小写；（如：密码中不能包含abcd或ABCD或AbcD或DcbA等）
    if (Loginmgmt.passwordChecker.checkSeqChar(password)) {
    	alert("<spring:message code="error.checkPasswordSeqChar" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //密码中不能包含有连续四位及以上重复字符，字母不区分大小写；（如：密码中不能包含8888、9999、aaaa 或AAAA或BbbB或 $$$$等四位及以上的重复字符）
    if (Loginmgmt.passwordChecker.isRepeat4Times(password)) {
    	alert("<spring:message code="error.checkPasswordRepeat4" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //sf不区分大小写不能出现在密码首与尾；（如：密码不允许设置为sf********或********sF等）
    if (Loginmgmt.passwordChecker.isStartOrEndBySF(password)) {
    	alert("<spring:message code="error.checkPasswordSE" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //不能将帐号名作为密码的一部分存在于密码中；（如：用户帐号名为013579，密码不允许设置为***013579****）
    if (Loginmgmt.passwordChecker.isIncludeUsername(username, password)) {
    	alert("<spring:message code="error.checkPasswordUsername" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    //禁忌词不区分大小写不能作为密码的一部分存在于密码中；（如：admin, pass）
    if (Loginmgmt.passwordChecker.isIncludeBenWord(password)) {
    	alert("<spring:message code="error.checkPasswordBen" />");
    	window.location.href=Loginmgmt.getchgpwdUrl();
	    return false;
	}
    return true;
}

//附加anchor参数，防止anchor(#)的参数丢失
function appendAnchorParam(form) {
    var location = window.document.URLUnencoded;
    if (location == undefined) {
        location = window.document.location;
    }
    if (location) {
    	var url = location.toString();
    	var index = url.lastIndexOf("#");
    	if (index > 0) {
        	var hash = url.substring(index);
        	form.action = form.action + hash;
    	}
    }
}