Now that it's possible to generate any type of file you want right in the browser, document editors can have an instant save button that doesn't rely on an online connection. I have written a JavaScript library called FileSaver.js, which implements FileSaver in all modern browsers. The W3C File API includes a FileSaver interface, which makes saving generated data as easy as saveAs(data, filename), though unfortunately it will eventually be removed from the spec. This is less than ideal for web apps that need to work offline. Usually when you want to save a file generated with JavaScript, you have to send the data to your server and then return the data right back with a Content-disposition: attachment header. Have you ever wanted to add a Save as… button to a web app? Whether you're making an advanced WebGL-powered CAD web app and want to save 3D object files or you just want to save plain text files in a simple Markdown text editor, saving files in the browser has always been a tricky business. Perform a column selection by by dragging.Copy the response of a network resource to your clipboard.High performance video with hardware decoding.Go to a line number at a specific column.Get notified of JS errors while you type.
Use keyboard to navigate through callstack.Toggle the DevTools dock state with a keyboard shortcut.Quickly monitor events from the Console Panel.Command click to add multiple cursors in the Sources Panel.Some UI and feature enhancements to the Color Picker tool.Notifying you of Changes to Notifications.
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