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| /** | |
| * VH and VW units can cause issues on iOS devices: http://caniuse.com/#feat=viewport-units | |
| * | |
| * To overcome this, create media queries that target the width, height, and orientation of iOS devices. | |
| * It isn't optimal, but there is really no other way to solve the problem. In this example, I am fixing | |
| * the height of element `.foo` —which is a full width and height cover image. | |
| * | |
| * iOS Resolution Quick Reference: http://www.iosres.com/ | |
| */ | |
All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.
Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent
Service Worker - offline support for the web
Progressive apps - high-res icon, splash screen, no URL bar, etc.
| const createCloudinary = (cloudName, unsignedUploadPreset) => ({ | |
| process: (fieldName, file, metadata, load, error, progress, abort) => { | |
| // `fieldName` and `meta` are not used for now | |
| const url = `https://api.cloudinary.com/v1_1/${cloudName}/upload`; | |
| const xhr = new XMLHttpRequest(); | |
| const formData = new FormData(); |