Notify user if there is something new in JavaScript [closed]

问题

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.

Closed 6 years ago.

I would like to create something like this in Javascript, and its better if i can do it with Extjs:

showing a small notification icon on a button when the page contains something new, then when the user click this button and open the page, the icon gone.

It's simple HTML5/JavaScript. I update the web page weekly and would like users to notice the updates.

回答1:

This is possible. You have to save a Cookie in your browser once the user click the button. If the Cookie is set, then you can hide the notification.

Here an example:

var myCookie = Ext.util.Cookies.get("YourCookieName");
if(!myCookie){
    // show notification
}

And on button click:

Ext.util.Cookies.set("YourCookieName", 1);

来源：https://stackoverflow.com/questions/16728965/notify-user-if-there-is-something-new-in-javascript