mdn file api

A. File and blob A Blob object is a class file object that contains read-only raw data. The data in a BLOB object does not necessarily have to be a native form in JavaScript. The file interface is based on a blob, inherits the functionality of the

I'll take the bike.-Demand FinishingLook at the WWW, the general picture upload module, the main is to achieve the three functions, picture preview, image clipping and preview, image upload, then I will complete such a bar, and then refine the

Most smartphones have front and rear cameras, and when you create a video app you may want to select or toggle the front and rear camera.If you're developing a chat app, you're probably going to want to call a front-facing camera, but if you're

For the file download, can be said to be a very common topic, the front-end of many projects will have such a demand, such as the export of Highchart charts, online picture editing in the image preservation, online code editing code export and so on.

Now the INDEXEDDB has a few mature libraries, such as the west of these several, any one is very good. The advantage of other people's things is to get started quickly, look at the document is good, if the document is not very good, it is a little

Some time ago to re-learn the video part of the HTML5, previously just stuck on the use of tags, this time decided to drill into the relevant APIs, and use these APIs to create a simple video player. The so-called "Build Your Own" is to rewrite the

Transfer from MDN Learning site-what is JavaScriptWhat is JavaScript?Welcome to MDN JavaScript Beginner's course! In the first article, we will stand at a certain height to look at JavaScript and answer something like "What is it?" "and" What can it

Introduction to Use Cases of instance parsing ES6 Proxy, es6proxy Features such as Arrow functions, array deconstruct, and rest parameters in ES6 have been widely circulated once implemented. However, features such as Proxy are rarely used by

Last reprinted an article "PowerShell view open File default Application", its bright spot is to invoke the Windows API, the idea is very unique, but may not be practical. Later @j in the original comment, said Assoc + ftype more convenient. So

Several days ago, the previous article introduced the CSV table, and JS combined with the Back-end PHP parsing table filling the form method. Where the CSV converted to a two-dimensional array when the logic is more complex multi-pit, fortunately