Javascript Cookie超时带倒计时器

本文介绍了Javascript Cookie超时带倒计时器的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想使用javascript设置Cookie。足够简单。假设我设置了15分钟。

I want to set a cookie with javascript. Easy enough. Lets say I set it for 15 minutes.

我如何计算定时器显示以显示Cookie过期？即使他们离开了网页，我也希望它继续计数，当他们回到网页时，它仍然会倒计时。

How would I make a count down timer show to show when the cookie expires? And even if they left the page I would want it to keep counting and when they come back to the page it would still have been counting down.

对不起的解释。

感谢

推荐答案

如果没有cookie，请将现在+ 15分钟的时间戳存储在cookie中。 编写一个简单的脚本，每秒检查一次现在和时间戳之间的差异。

Store the time stamp of now + 15 minutes within a cookie if there is no cookie. Write a simple script that checks the difference between now and the timestamp every second.

编辑：示例代码

sample code

// 200 seconds countdown var countdown = 200; //current timestamp var now = Date.parse(new Date()); //ready should be stored in your cookie var ready = Date.parse(new Date (now + countdown * 1000)); // * 1000 to get ms //every 1000 ms setInterval(function() { var sec = ( ready - Date.parse(new Date()) )/1000; document.title = sec + " seconds left"; },1000);