cookie 写入的封装，读取的封装，删除某个属性的封装
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<button class="btn">按钮</button>
<script>
function setCookie(attr,value,expires){
var date=new Date();
var time =date.getTime()+expires*24*3600*1000;
date.setTime(time);
document.cookie=attr+"="+value+";expires="+date.toUTCString()
}
setCookie("dfc",11,1);
setCookie("lx",222,1);
setCookie("hh",33,1);
function getCookie(attr) {
var cookie=document.cookie;
var arr=cookie.split(";");
var newArr=[];
var obj={};
for(var i=0;i<arr.length;i++){
newArr=arr[i].split("=");
//console.log(newArr)
obj[newArr[0].trim()]=newArr[1]
}
console.log(obj)
return obj[attr]
}
var aa= getCookie("dfc");
console.log(aa)
function removeCookie(attr){
var cookie=document.cookie;
var arr=cookie.split(";");
var newArr=[];
var obj={};
for(var i=0;i<arr.length;i++){
newArr=arr[i].split("=");
//console.log(newArr)
if(newArr[0].trim()!=attr){
obj[newArr[0].trim()]=newArr[0]
}
}
return obj
}
document.querySelector(".btn").onclick=function () {
var newObj=removeCookie("dfc");
console.log(newObj)
}
</script>
</body>
</html>