Add, delete, modify, check cookies

The following functions are all written and can be used directly: 

   1. The addition and modification of cookies are as follows:

function update(name,val){
   document.cookie = name +  "=" + val;
}

 name: represents the key to be saved; val: represents the value to be saved

   2. Acquisition of cookies:

function get_cookies(val){
    for(var i in document.cookie.split(';')){
        if(document.cookie.split(';')[i].split('=')[0] == val){
            return document.cookie.split(';')[i].split('=')[1]
        }
    }
}

 val: represents the key you want to get data, such as user='admin', val = user

 

 3. Deletion of cookies:

function delete_cookies(val){
    var now_month = new Date();
    now_month.setTime(now_month.getTime() - 1);
    var value = [];
    for(var i in document.cookie.split(';')){
        if(document.cookie.split(';')[i].split('=')[0] == val){
            value = document.cookie.split(';')[i].split('=')
        }
    }
    document.cookie = value[0] + "=" + value[1]+ ";expires=" +now_month.toGMTString();
}

  val: represents the key you want to get the data;

 

The above are all separate, you can take what you need.