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<!DOCTYPE html>
<html>
<head>
<script>
//设置cookie
function setCookie(c_name,value,expiredays) {
//创建一个Date对象;
var exdate = new Date();
//设置过期时间
exdate.setDate(exdate.getDate() + expiredays);
//设置cookie
document.cookie = c_name + "=" + escape(value) +
((expiredays == null)? "" :"; expires =" + exdate.toUTCString());
}
//得到cookie
function getCookie(c_name) {
if(document.cookie.length > 0){
c_start = document.cookie.indexOf(c_name + "=");
if(c_start != -1){
c_start = c_start + c_name.length + 1;
c_end = document.cookie.indexOf(";",c_start);
if(c_end == -1) {
c_end = document.cookie.length;
}
return unescape(document.cookie.substring(c_start,c_end));
}
}
return "";
]
//检查cookie
function checkCookie() {
username = getCookie('username');
if(username != null && username != ""){
alert('欢迎再次返回我们，' + username + '！');
} else {
username = prompt('请输入你的名字',"");
if(username != null && username != ""){
setCookie('username',username,365);
}
}
}
</script>
</head>
<body onload = "checkCookie()">
</body>
</html>
<html>
<head>
<script>
//设置cookie
function setCookie(c_name,value,expiredays) {
//创建一个Date对象;
var exdate = new Date();
//设置过期时间
exdate.setDate(exdate.getDate() + expiredays);
//设置cookie
document.cookie = c_name + "=" + escape(value) +
((expiredays == null)? "" :"; expires =" + exdate.toUTCString());
}
//得到cookie
function getCookie(c_name) {
if(document.cookie.length > 0){
c_start = document.cookie.indexOf(c_name + "=");
if(c_start != -1){
c_start = c_start + c_name.length + 1;
c_end = document.cookie.indexOf(";",c_start);
if(c_end == -1) {
c_end = document.cookie.length;
}
return unescape(document.cookie.substring(c_start,c_end));
}
}
return "";
]
//检查cookie
function checkCookie() {
username = getCookie('username');
if(username != null && username != ""){
alert('欢迎再次返回我们，' + username + '！');
} else {
username = prompt('请输入你的名字',"");
if(username != null && username != ""){
setCookie('username',username,365);
}
}
}
</script>
</head>
<body onload = "checkCookie()">
</body>
</html>
...全文
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computer_greenhand 2017-06-15
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我找到错误的地方了...居然花括号打错了...
