I hope this quick introduction was useful and informative. ![]() This means that if the key was not present in localStorage, the popup was force closed by the user and the UI can update accordingly. On a successful/unsuccessful login, it also sets a key in localStorage for some extra information. The login page's code is pretty self explanatory here: it runs the popupClosed function (from the parent window) when it gets closed. Ĭonst btn = document.querySelector('#button')Ĭonst input = document.querySelector('#name')ītn.addEventListener('click', function() ), Hence the greet function can be called in two ways: greet('abc') or eet('abc'). One thing to note here is that every function or variable you define in the outermost scope is defined as a property on the window object (when run in browser). You can use this to communicate events/data from child to parent window. In order to pass data from child window to the parent window, there is a property window.opener which refers to the parent window object. this is not cross-domain, hence you can do stuff like thisĬ(`alert('Hello World')`) Let childPopup2 = window.open('', 'My Popup') for example you can close the popup like so If there’s already a window with such name the given URL opens in it, otherwise a new window is opened. Each window has a window.name, and here we can specify which window to use for the popup. childPopup1 references the window object of the newly opened window The syntax to open a popup is: window.open(url, name, params): url An URL to load into the new window. let childPopup1 = window.open('', 'google') With same domain popups, you can perform all operations on them just like you normally would. For example, you can't just inject a script in a website by opening it in a popup. There's very limited control when it comes to opening popups with a different domain URL due to security reasons. The open() method returns a reference to the child window which we can use to alter the contents of the popup and programatically control it. We can only interact with the popup through the window that created it (parent window). This opens Google in an unresizable popup with no scrollbars, statusbar, toolbar, menubar which is centered on the screen. An example to open a popup is shown below: window.open('', 'Google', 'scrollbars=no,resizable=no,status=no,location=no,toolbar=no,menubar=no, For a complete list, refer to w3schools here. We can control the height, width, positioning, statusbar, menubar, scrollbar and many other things. It is a comma separated list of features that we want the window to have. The third argument is the most useful of all. A target of _blank opens the window separately and that of _self replaces the current page. The window target is similar to the target attribute in the HTML anchor tag. The second argument is either the name or target of the window. ![]() Hence it's only available on the client side. ![]() The open method is defined on the global window object. Javascript has a method to open a new window and control its behaviour. Opening a popupĪ popup is just a new browser window that is usually displayed over the existing one. But have you ever thought how these popups work? How do popups interact with their parent windows? This article provides a quick introduction to working with popups in Javascript.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |