CSS basic selector and some code to set cookies

ID selector: #header {}
Class selector:. Header {}
Element selector: div {}
Sub-selector: ul > li {}
Descendant selector: div p {}
Pseudo-Class selector: a:hover {}
Property selector: input[type= "text"] {}
ID priority is higher than class classes;
The following styles cover the front;
Higher than the inheritance specified;

Set a cookie with expiration time
    var date=new date ();
    var d=new Date (Date.settime (Date.gettime () +10000));

The caller in front of togmtstring () must be a time object
    Document.cookie= ' name1=haa1;expires= ' + d.togmtstring ();
    Document.cookie= ' name2=haa2;expires= ' + d.togmtstring ();
    Document.cookie= ' name3=haa3;expires= ' + d.togmtstring ();

Get cookies
    var cookie=document.cookie.split (': ');
    var value= ';
    Cookie.foreach (function (val,index) {
        if (val.split (' = ') [0]== ' Name3 ') {
            Value=val.split (' = ') [1];
        }
    });
    Console.log (value);

    /**
     * Delete Cookies
     * @type {string}
     * @name  The name of the cookie to be deleted
     * toGMTString ()  Note: The time format must finally be converted using this method
     */
    Document.cookie= ' Name= ""; expires= ' +new Date (). togmtstring ();

CSS basic selector and some code to set cookies