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[Java教程]JS实现登录页面记住密码和enter键登录


<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>按enter键触发事件和记住账号密码</title>
<script>

//方法一:
// document.onkeypress=function(e){
// var keycode=document.all?event.keyCode:e.which;
// if(keycode==13){
// alert_login();
// };
// }

//方法二:
document.onkeypress = viewKeyInfo;
function viewKeyInfo(e) {
var e = e || event;
if ((e['keyCode'] == 13) || (e['which'] == 13)) {
alert_login();
}
}

function body_onload(){
if (1 == get_saveauth_cookies()) {
var tmp_user = '';
var tmp_pwd = '';

tmp_user = get_user_cookies();
tmp_pwd = get_pwd_cookies();

document.getElementById("tt_user").value = tmp_user;
document.getElementById("pd_pwd").value = tmp_pwd;
document.getElementById("chx_save_auth").checked = true;
}
}

function alert_login(){
if (document.getElementById("chx_save_auth").checked == true) {
var cookies_uesr = document.getElementById("tt_user").value;
var cookies_pwd = document.getElementById("pd_pwd").value;
setcookie('loginuser', cookies_uesr, 1440);
setcookie('loginpwd', cookies_pwd, 1440);
setcookie('saveauth', 1, 1440);
}
else {
setcookie('saveauth', 0, 1440);
}
location = "https://www.baidu.com";
}

function setcookie(name,value,expirehours)
{
var cookieString=name+'='+escape(value);
if (expirehours>0)
{
var date=new Date();
date.setTime(date.getTime()+expirehours*3600*1000);
cookieString = cookieString + '; expires=' + date.toGMTString();
document.cookie = cookieString;
}
document.cookie=cookieString;
}
function getcookie(name)
{
var strCookie=document.cookie;
var arrCookie=strCookie.split('; ');
for (var i=0;i<arrCookie.length;i++)
{
var arr=arrCookie[i].split('=');
if (arr[0]==name)
return unescape(arr[1]);
}
return '';
}

function get_user_cookies() {
var tmp_val = getcookie('loginuser');
return tmp_val;
}

function get_pwd_cookies() {
var tmp_val = getcookie('loginpwd');
return tmp_val;
}

function get_saveauth_cookies() {
var tmp_val = getcookie('saveauth');
return tmp_val;
}
</script>

</head>
<body onload="body_onload()">

<p>user:<input type="text" id="tt_user" /></p>
<p>password:<input type="password" id="pd_pwd" /></p>
<p><input type="checkbox" id="chx_save_auth"/>save password</p>
<p><input type="button" onclick="alert_login()" value="login"/></p>

<!--<input type="button" onclick="javascript:alert_login()" value="login"/>
javascript:alert_login()与alert_login()无区别 -->


</body>
</html>