<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>cookie的应用——记住用户名</title>
</head>
<body>
<form action="#" id="myform">
<label for="username">用户名:</label><input type="text" name="username" id="username" />
<label for="userpass">密码:</label><input type="password" name="userpass" id="userpass" />
<input type="submit" value="登录" />
<a href="javascript:;">清除记录</a>
</form>
</body>
</html>
<script type="text/javascript" src="cookie.js"></script>
<script type="text/javascript">
window.onload = function(){
var oForm = document.getElementById('myform');
var oTxt1 = document.getElementById('username');
var oTxt2 = document.getElementById('userpass');
var oClear = document.getElementsByTagName('a')[0];
oTxt1.value = getCookie('username');
oTxt2.value = getCookie('userpass');
oForm.onsubmit = function(){
setCookie('username',oTxt1.value,30);
setCookie('userpass',oTxt2.value,30);
}
oClear.onclick = function(){
removeCookie('username');
removeCookie('userpass');
oTxt1.value = '';
oTxt2.value = '';
}
}
</script>
function setCookie(name,value,hours){
var d = new Date();
d.setTime(d.getTime() + hours * 3600 * 1000);
document.cookie = name + '=' + value + '; expires=' + d.toGMTString();
}
function getCookie(name){
var arr = document.cookie.split('; ');
for(var i = 0; i < arr.length; i++){
var temp = arr[i].split('=');
if(temp[0] == name){
return temp[1];
}
}
return '';
}
function removeCookie(name){
var d = new Date();
d.setTime(d.getTime() - 10000);
document.cookie = name + '=1; expires=' + d.toGMTString();
}
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