A: For demo purposes, snippets in this article all start with openDB() to establish a connection, and ends with db.close(). However, in reality, the typical pattern is to establish a single connection to use over and over without ever closing it, for example: import{ openDB }from"idb...
To my knowledge, the most popular polyfill isthis one. You can use it almost exactly like the BroadcastChannel API. If it detects that the BroadcastChannel API is available it will use it automatically for faster results. Otherwise, it will use IndexedDB or LocalStorage. What Messages Can We ...
没有了window全局对象,可以使用globalThis 1 indexedDB 如果习惯于使用window.indexedDB,还以为 indexedDB 在 service-worker 不支持了。可以直接使用indexedDB或globalThis.indexedDB 2 canvas 在网页中,习惯使用HTMLCanvasElement或者document.createElement('canvas')来创建 canvas。 也可以直接使用OffscreenCanvas 原...
Check JavaScript Compatibility for Free Use Polyfills: These are third-party JS files that work similarly to JS libraries. However, polyfills are also capable of providing new functionalities. For example, a polyfill can be used to support ES6-based features in browsers that fundamentally don’t....
Issue: Whenever I try to open up Teams, I receive an error “JavaScript error occurred in the main process” with a bunch of other text under it. How do I fix it? Understand instantly Fix 1. Restart Microsoft Teams Fix 2. Check for Windows updates Fix 3. Disable antivirus...
IndexedDB is a NOSQL database with full transaction support, read/write locking and indexing. It's transaction support makes it bullet proof to work with in all Web use cases such as page reload, multiple tabs open, loading newer version of webapp with updated schema, etc... Tables are ...
These articles in the series walk you through creating an Indexed DB database for tracking images and tags. Examples show how to use Indexed DB objects to create a tag cloud and use it as a search mechanism. This section contains the following topics: Determining database needs Creating and ...
core/ 和 modules/ - 在规范定义的所有 web 平台特性的实现。core/ 实现了跟 DOM 紧密相关的特性。modules/ 实现的特性相对来说会更自包含。比如 webaudio,indexeddb。 bindings/core 和 bindings/modules/ - 概念上来说 bindings/core 属于 core/ 的一部分,bindings/modules/ 属于 modules/ 的一部分。放置于...
Other methods to alter the parameters, for use in other JavaScript running in the page (they do not change the URL):append() to append a new parameter to the object delete() to delete an existing parameter set() to set the value of a parameter...
With a PWA, your website may be “installed” on the user’s home screen, accessed even while offline, and you can send push alerts. IndexedDB allows you to extensively cache data, including API requests. In this article, I will walk you through the basic configuration I used to rapidly...