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@@ -0,0 +1,58 @@
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+<!DOCTYPE html>
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+<html lang="en">
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+<head>
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+ <meta charset="UTF-8">
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
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+ <title>Document</title>
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+</head>
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+<body>
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+ <script>
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+ // 向本地存储中设置一个新的cookie
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+ function setCookie(key,val,time){
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+ var timer = new Date();
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+ timer.setDate(timer.getDate()+time);
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+ console.log(timer.toUTCString());
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+ document.cookie = `${key}=${val};Expires=${timer.toUTCString()}`;
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+ }
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+
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+ // 根据key值获取本地cookie
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+ function getCookie(key){
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+ var cookieVal = document.cookie;
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+ cookieVal = cookieVal.split(";")
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+ console.log(cookieVal);
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+ var valStr = "";
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+ for(var i=0;i<cookieVal.length;i++){
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+ // console.log(cookieVal[i].split("="))
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+ // 将每一个键值对根据“=”进行分割 分别值key值（第一个值） vlaue值（第二个值）
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+ var keyStr = cookieVal[i].split("=")[0];
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+ valStr = cookieVal[i].split("=")[1]
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+ // 去除掉字符串左右两边的空格
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+ keyStr = keyStr.trim();
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+ if(keyStr == key){
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+ return valStr;
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+ }
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+
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+ }
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+ return valStr
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+ }
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+
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+ // 删除cookie
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+ function delCookie(key){
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+ var timer = new Date();
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+ // 把当前时间设置为过期时间
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+ timer.setDate(timer.getDate()-2);
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+ document.cookie = `${key}=null;Expires=${timer.toUTCString()}`;
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+ }
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+ // setCookie("username","小张",3);
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+ // setCookie("password","123",3);
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+ // setCookie("school","黑大",3);
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+
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+ // console.log(getCookie("password"));
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+ delCookie("username");
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+ delCookie("password");
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+
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+
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+
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+ </script>
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+</body>
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+</html>
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