cookie do remember the account number and password function

Disclaimer: This article is a blogger original article, shall not be reproduced without the bloggers allowed. https://blog.csdn.net/qq_34664239/article/details/90548882

//勾选记住密码
var onOff;
$(function() {
	GetLastUser(); //从cookie中获取用户名和密码
	$('.denglu-btn').click(function() { //点击登录按钮登录
		loginEvent()
	})
	document.onkeydown = function(event) { //俺键盘Enter键登录
		var e = event || window.event || arguments.callee.caller.arguments[0];
		if(e && e.keyCode == 13) {
			loginEvent()
		}
	};
})

function loginEvent() {
	SetPwdAndChk();
	//这里向后台发送ajax请求，登录页面
}

function GetLastUser() {
	var id = "49BAC005-7D5B-4231-8CEA-16939BEACD67"; //GUID标识符
	var usr = GetCookie(id);
	if(usr != null) {
		document.getElementById('username').value = usr;
	} else {
		document.getElementById('username').value = "";
	}
	GetPwdAndChk();
}

//点击登录时触发客户端事件
function SetPwdAndChk() {
	//取用户名
	var usr = document.getElementById('username').value;
	//将最后一个用户信息写入到Cookie
	SetLastUser(usr);
	//如果记住密码选项被选中
	if(document.getElementById('chkRememberPwd').checked == true) {
		//取密码值
		var pwd = Base64.encode(document.getElementById('password').value);
		var expdate = new Date();
		expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000));
		//将用户名和密码写入到Cookie
		SetCookie(usr, pwd, expdate);
	} else {
		//如果没有选中记住密码,则立即过期
		ResetCookie();
	}
}

function SetLastUser(usr) {
	var id = "49BAC005-7D5B-4231-8CEA-16939BEACD67";
	var expdate = new Date();
	//当前时间加上两周的时间
	expdate.setTime(expdate.getTime() + 14 * (24 * 60 * 60 * 1000));
	SetCookie(id, usr, expdate);
}
//用户名失去焦点时调用该方法

function GetPwdAndChk() {
	var usr = document.getElementById('username').value;
	
	if(GetCookie(usr)){
		var pwd = Base64.decode(GetCookie(usr));
	}else{
		var pwd = null;
	}
	if(pwd != null) {
		document.getElementById('chkRememberPwd').checked = true;
		document.getElementById('password').value = pwd;
	} else {
		document.getElementById('chkRememberPwd').checked = false;
		document.getElementById('password').value = "";
	}
}
//取Cookie的值

function GetCookie(name) {
	var arg = name + "=";
	var alen = arg.length;
	var clen = document.cookie.length;
	var i = 0;
	while(i < clen) {
		var j = i + alen;
		//alert(j);
		if(document.cookie.substring(i, j) == arg) return getCookieVal(j);
		i = document.cookie.indexOf(" ", i) + 1;
		if(i == 0) break;
	}
	return null;
}

function getCookieVal(offset) {
	var endstr = document.cookie.indexOf(";", offset);
	if(endstr == -1) endstr = document.cookie.length;
	return unescape(document.cookie.substring(offset, endstr));
}
//写入到Cookie

function SetCookie(name, value, expires) {
	var argv = SetCookie.arguments;
	//本例中length = 3
	var argc = SetCookie.arguments.length;
	var expires = (argc > 2) ? argv[2] : null;
	var path = (argc > 3) ? argv[3] : null;
	var domain = (argc > 4) ? argv[4] : null;
	var secure = (argc > 5) ? argv[5] : false;
	document.cookie = name + "=" + escape(value) + ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + ((path == null) ? "" : ("; path=" + path)) + ((domain == null) ? "" : ("; domain=" + domain)) + ((secure == true) ? "; secure" : "");
}

function ResetCookie() {
	var usr = document.getElementById('username').value;
	var expdate = new Date();
	SetCookie(usr, null, expdate);
}