![]() We can avoid browser popup blockers by calling window.open in a synchronous function. Īnd so pop should return true if the popup opens. If the popup opens, then popup shouldn’t be null and it shouldn’t be undefined. ![]() Then we return is popup isn’t null and popup isn’t undefined. We call window.open with the url as the first argument and a string with some settings as the 3rd argument. įor instance, we can check if a popup window is blocked by writing: const pop = (url, w, h) => console.log(pop('')) We can check if a popup is blocked by checking if window.open returns null or undefined. Therefore, we should call window.open within synchronous functions run as a result of direct user action to avoid the popup permission popup from showing in any browser. The depth of the call chain may also matter since some older browsers requires permission is window.open isn't called by the function that’s run immediately after a user action. Learn how to allow or block a specific website from running JavaScript withi. This is because, a popup can only be opened from an app without permission with direct user action. Learn how to how to allow or block JavaScript within your Google Chrome Browser. ![]() To avoid the permission popup for opening the popup, we should use avoid calling window.open in a function that returns a promise or in callbacks for functions like setTimeout, setInterval, or any other async function. Avoid Calling window.open in Async Functions In this article, we’ll look at how to avoid browser popup blockers within our JavaScript code. ![]() Using the pseudo-element ::before, I set content to what I wanted the stop sign to read.Sometimes when we try to open a window with the window.open method, we may see the browser permission popup asking for permission to open the popup created by window.open. Knowing that the tags html and body are always used in that order on a webpage, I decided to hide the body content (essentially the whole page), and use the html to control the actual stop screen. We can use content scripts to tell the browser to apply our stylesheet when it matches specific urls. Save these images into the icons folder at the different sizes (16x16, 48x48, 128x128) to. Making the icon an emoji with uncomfortably long arms Chrome’s documentation will definitely cover more details but I’ll quickly highlight some things below that are especially important to making this extension work! manifest.json: “icons” Only properties manifest_version, name, and version are required, but we’re going to use icons as well. The documentation is great to reference, as it has an exhaustive list of properties that may pertain to what you are trying to build. The only restriction around this is that it must live at the root level of your directory. The manifest.json file is required and also super important as it’s the configuration file that describes lots of properties about your extension to Chrome. I’ve attached instructions on how to load this extension into the browser, which I’ll reiterate near the end of this article The README.md file is simply to provide information on the main Github repository.Chrome extensions need to have a manifest.json file for it to communicate to the browser about important information as well as other configurations.The icons folder will hold the many sizes of our extension icon (16px, 48px, 128px).style.css is in its own folder for organizational purposes - slightly unnecessary right now because there’s only one file, but if you were to make styling fancier, I’d put them here.site-blocker/ ├── css/ │ └── style.css ├── icons/ ├── manifest.json └── README.md You can follow along by cloning/downloading the completed extension in my repository. Mainly to provide an overview of what’s to come, here is how I am structuring my files. There is a bit of structure to a Chrome extension, but following the few required components of it, the rest is as flexible as you make it.
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