lovecoding
/
W250511


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // 设置cookie
        function setCookie(key,value,timer){
            // 设置key 和 value
            var keyVal = key + "=" + value;
            // 设置过期时间
            var now = new Date();
            now.setDate(now.getDate() + timer);
            var timerStr = ";expires=" + now.toUTCString();
            // 设置cookie
            document.cookie = keyVal + timerStr;
        }

        // 获取cookie
        function getCookie(key){
            // 获取所有cookie
            var thisCookie = document.cookie;
            // 拆分cookie
            var cookieArr = thisCookie.split(";");
            // 遍历cookie
            for(var i=0;i<cookieArr.length;i++){
                var cookieKey= cookieArr[i].split("=");
                // trim()去除字符串左右空格
                // console.log(cookieKey[0].trim());
                if(cookieKey[0].trim() == key){
                    return cookieKey[1]
                }
            }

        }

        // 删除cookie
        function delCookie(key){
            // 设置cookie 过期时间为-1
            setCookie(key,'',-1);
        }

        // 设置一个cookie name=张三 过期时间为10天后
        setCookie('name','张三',10);
        setCookie('age',18,10);
        setCookie('sex','男',10);
        // 获取cookie
        console.log(getCookie('sex'));
        // 删除cookie
        delCookie('sex');
    </script>
</body>
</html>