chromium-os

Failed to connect to USB on chromebook: Permission to access device was denied

别说谁变了你拦得住时间么 提交于 2019-12-24 17:39:46
问题 I'm writing app for chromebook that has to communicate with specific USB device. The device is present in the list of found devices, that comes from callback: var VENDOR_ID = 5824, PRODUCT_ID = 1159; document.getElementById("request-permission").addEventListener('click', function() { chrome.permissions.request({ permissions: [{ 'usbDevices': [{ 'vendorId': VENDOR_ID, "productId": PRODUCT_ID }] }] }, function(result) { if (result) { console.log('App was granted the "usbDevices" permission.');

How to detect Chromium OS using JavaScript?

梦想的初衷 提交于 2019-12-10 19:31:01
问题 I use Windows to develop my app and I use navigator.platform to detect the OS type. I don't have a Chromium OS so I don't know what the value will be returned by the above script. Can someone tell me what it returns on Chromium OS? 回答1: In the userAgent you will get Chrome and then CrOS For example: var ua = window.navigator.userAgent; // Then check if the UA is something like: Mozilla/5.0 (X11; CrOS i686 0.12.433) AppleWebKit/534.30 (KHTML, like Gecko) Chrome/12.0.742.77 Safari/534.30 Here