<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<title>cookie
</title>
<meta name="description" content="">
<meta name="keywords" content="">
</head>
<body>
<script>
function setCookie(key,value,t){
var myDate=new Date()
myDate.setDate(myDate.getDate()+t)
document.cookie=key+"="+value+ ";expires="+myDate.toGMTString();
}
function getCookie(key){
var arr1 = document.cookie.split('; ');
for (var i=0; i<arr1.length; i++) {
var arr2 = arr1[i].split('=');
if ( arr2[0] == key ) {
return decodeURI(arr2[1]);
}
}
}
function removeCookie(key) {
setCookie(key, '', -1);
}
</script>
<script>
window.onload = function() {
var oUsername = document.getElementById('username');
var oLogin = document.getElementById('login');
var oDel = document.getElementById('del');
if ( getCookie('username') ) {
oUsername.value = getCookie('username');
}
oLogin.onclick = function() {
alert('登陆成功');
setCookie('username', oUsername.value, 5);
}
oDel.onclick = function() {
removeCookie('username');
oUsername.value = '';
}
}
</script>
<input type="text" id="username" />
<input type="button" value="登陆" id="login" />
<input type="button" value="删除" id="del" />
</body>
</html>
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