2019-10-23 设置获取删除cookie

1.js设置cookie

function setCookie(cname,cvalue,exdays){

        var d=new Date();

        d.setTime(d.getTime()+(exdays*24*60*60*1000));

        var expires="expires="+d.toUTCString();

        console.info(cname+"="+cvalue+"; "+expires);

        document.cookie=cname+"="+cvalue+"; "+expires+";path="+"/;domain=qianlima.com";     //防止cookie丢失

        console.info(document.cookie)

    }

2.//设置cookie

      setCookie: function (cname, cvalue, exdays) {

        var d = new Date();

        d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));

        var expires = "expires=" + d.toUTCString();

        console.info(cname + "=" + cvalue + "; " + expires);

        document.cookie = cname + "=" + cvalue + "; " + expires;

        console.info(document.cookie);

      },

      //获取cookie

      getCookie: function (cname) {

        var name = cname + "=";

        var ca = document.cookie.split(';');

        console.log("获取cookie,现在循环")

        for (var i = 0; i < ca.length; i++) {

          var c = ca[i];

          console.log(c)

          while (c.charAt(0) == ' ') c = c.substring(1);

          if (c.indexOf(name) != -1){

            return c.substring(name.length, c.length);

          }

        }

        return "";

      },

      //清除cookie

      clearCookie: function () {

        this.setCookie("username", "", -1);

      }