本文为大家分享了js和jquery记住密码功能的方法,具体如下
一. js 实现记住密码功能
html:
<form id="form22" name="form22" action="checklogin.action" method="post" >
<div class="username" style="margin-top:50px;">
<label>用户名:</label>
<input type="text" name="username" id="username" />
<span id="myuser" style="color: red; font-size:12px; font-weight: normal;"></span>
</div>
<div class="password">
<label>密 码:</label>
<input name="password" id="password" type="password" />
<span id="mypass" style="color: red; font-size:12px; font-weight: normal;"></span>
</div>
<div class="user_type" >
<label> </label>
<input type="checkbox" id="saveusername" style="float: left; margin-top:3px;" />
<span> 记住用户</span>
</div>
<input type="button" value="" class="btn_login" id="btn_login" onclick="checkform();"/>
</form>
cookie.js:
function setcookie (name, value) {
var days = 30; //此 cookie 将被保存 30 天
var exp = new date();
exp.settime(exp.gettime() + 1000);
if(value==""||value=="null"
||value=="null"||value==" "){
}else{
document.cookie = name + "="+ escape(value) +";expires=sun, 17-jan-2038 19:14:07 gmt";
}
}
function getcookie(sname){
var acookie = document.cookie.split("; ");
for (var i=0; i < acookie.length; i++)
{
var acrumb = acookie[i].split("=");
if (sname == acrumb[0])
{
return acrumb[1];
}
}
return null;
}
function checkcookieexist(name){
if (getcookie(name))
return true;
else
return false;
}
function deletecookie(name, path, domain){
var strcookie;
// 检查cookie是否存在
if (checkcookieexist(name)){
// 设置cookie的期限为己过期
strcookie = name + "=";
strcookie += (path) ? "; path=" + path : "";
strcookie += (domain) ? "; domain=" + domain : "";
strcookie += "; expires=thu, 01-jan-70 00:00:01 gmt";
document.cookie = strcookie;
}
}
function savecookie(name, value, expires, path, domain, secure){
var strcookie = name + "=" + value;
if (expires){
// 计算cookie的期限, 参数为天数
var curtime = new date();
curtime.settime(curtime.gettime() + expires*24*60*60*1000);
strcookie += "; expires=" + curtime.togmtstring();
}
// cookie的路径
strcookie += (path) ? "; path=" + path : "";
// cookie的domain
strcookie += (domain) ? "; domain=" + domain : "";
// 是否需要保密传送,为一个布尔值
strcookie += (secure) ? "; secure" : "";
document.cookie = strcookie;
}
login.js
window.onload = function(){
//console.log("ctx: " + "${ctx}");
var name = getcookie("loginusername");
document.getelementbyid("password").value="";
if(name != null && name != "") {
document.getelementbyid("username").value = name;
document.getelementbyid("password").focus();
} else { document.getelementbyid("username").focus();
}
}
function checkform(){
......
var ischecked = document.getelementbyid("saveusername").checked;
if(ischecked) {
setcookie("loginusername",username);
}
......
}
二. jquery 实现记住密码功能
参考:http://www.cnblogs.com/lindaz/p/5069981.html
html:
<form class="form-signin">
<input type="text" id="username" name="account" autofocus required placeholder="用户名" class="form-control" style="width: 250px; margin-bottom: 5px;">
<input type="password" id="password" name="password" required placeholder="密码" class="form-control" style="width: 250px;">
<br/>
<input id="remember_me" type="checkbox" name="remember_me" onkeydown="check_enter(event)" style="width:250;">
<span for="remember_me" onkeydown="check_enter(event)" style="width:250px">记住我</span>
<br/><br/>
<span class="btn btn-lg btn-primary btn-block">登 录</span>
</form>
<script src="jquery.js" type="text/javascript"></script>
<script src="jquery.cookie.js" type="text/javascript"></script>
判断checkbox是否被选中,若选中,则将存储cookie:
if ($("#remember_me").attr("checked")) {
$.cookie("rmbuser", "true", { expires: 7 }); //存储一个带7天期限的cookie
$.cookie("username", account, { expires: 7 });
$.cookie("password", password, { expires: 7 });
}
else {
$.cookie("rmbuser", "false", { expire: -1 });
$.cookie("username", "", { expires: -1 });
$.cookie("password", "", { expires: -1 });
}
在每次刷新登录页面加载js时,取出cookie中的用户名和密码,若cookie不为空,用户名和密码输入框被cookie里面的内容填充,复选框设为勾上状态:
$().ready(function(){
//获取cookie的值
var username = $.cookie('username');
var password = $.cookie('password');
//将获取的值填充入输入框中
$('#username').val(username);
$('#password').val(password);
if(username != null && username != '' && password != null && password != ''){
//选中保存秘密的复选框
$("#remember_me").attr('checked',true);
}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。