tryjs_cookie_username 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<head>
<script>
function setCookie(cname,cvalue,exdays){
    var d = new Date();
    d.setTime(d.getTime()+(exdays*24*60*60*1000));
    var expires = "expires="+d.toGMTString();
    document.cookie = cname+"="+cvalue+"; "+expires;
}
function getCookie(cname){
    var name = cname + "=";
    var ca = document.cookie.split(';');
    for(var i=0; i<ca.length; i++) {
        var c = ca[i].trim();
        if (c.indexOf(name)==0) return c.substring(name.length,c.length);
    }
    return "";
}
function checkCookie(){
    var user=getCookie("username");
    if (user!=""){
        alert("Welcome again " + user);
    }
    else {
        user = prompt("Please enter your name:","");
        if (user!="" && user!=null){
            setCookie("username",user,30);
        }
    }
}
</script>
</head>
 
 
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运行结果
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