Answering the Front-end developer JavaScript interview questions to the best of my ability.
Sometimes you need to delegate events to things.
this works in JavaScriptThis references the object or "thing" defined elsewhere. It's like "hey, thing I defined elsewhere, I'm talkin' to you."
| /* | |
| * Copyright (C) 2015 Pavel Savshenko | |
| * Copyright (C) 2011 Google Inc. All rights reserved. | |
| * Copyright (C) 2007, 2008 Apple Inc. All rights reserved. | |
| * Copyright (C) 2008 Matt Lilek <[email protected]> | |
| * Copyright (C) 2009 Joseph Pecoraro | |
| * | |
| * Redistribution and use in source and binary forms, with or without | |
| * modification, are permitted provided that the following conditions | |
| * are met: |
This assumes you have a Xiaomi Ants Smart Camera that still has the open RTSP enabled. I think newer firmware might remove this capability. If you Google enough you can find instructions on how to downgrade.
FFMPEG is where most of the magic happens. I use OSX and as such am a fan of using Homebrew to install free software. Here is my ffmpeg install command:
brew install ffmpeg --with-faac --with-fdk-aac --with-ffplay --with-fontconfig --with-freetype --with-frei0r --with-libass --with-libbluray --with-libcaca --with-libquvi --with-libsoxr --with-libssh --with-libvidstab --with-libvorbis --with-libvpx --with-opencore-amr --with-openjpeg --with-openssl --with-opus --with-rtmpdump --with-schroedinger --with-speex --with-theora --with-tools --with-webp --with-x265
| import './login.styl'; | |
| import Component from '../components/component.react'; | |
| import React from 'react'; | |
| import exposeRouter from '../components/exposerouter.react'; | |
| import {focusInvalidField} from '../lib/validation'; | |
| @exposeRouter | |
| export default class Login extends Component { | |
| static propTypes = { |
| - 我想要挑戰isomorphic，但目前好像比較少redux配isomorphic又配上webpack的方案 | |
| - 這個範例可看，最近全部改寫過 | |
| - https://github.com/coodoo/react-redux-isomorphic-example | |
| - 注意下面幾點 | |
| - js/bootClient.js 與 js/bootServer.js | |
| - bootServer.js 負責做 server-render |
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
| Lesson 1 - Iterations | |
| - BinaryGap - https://codility.com/demo/results/trainingU2FQPQ-7Y4/ | |
| Lesson 2 - Arrays | |
| - OddOccurrencesInArray - https://codility.com/demo/results/trainingFN5RVT-XQ4/ | |
| - CyclicRotation - https://codility.com/demo/results/trainingSH2W5R-RP5/ | |
| Lesson 3 - Time Complexity | |
| - FrogJmp - https://codility.com/demo/results/training6KKWUD-BXJ/ | |
| - PermMissingElem - https://codility.com/demo/results/training58W4YJ-VHA/ |
| apt-get -y update | |
| apt-get -y upgrade | |
| apt-get -y --force-yes install make unzip g++ libssl-dev git xvfb x11-xkb-utils xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic x11-apps clang libdbus-1-dev libgtk2.0-dev libnotify-dev libgnome-keyring-dev libgconf2-dev libasound2-dev libcap-dev libcups2-dev libxtst-dev libxss1 libnss3-dev gcc-multilib g++-multilib | |
| npm -f init | |
| npm i -S nightmare | |
| xvfb-run nodejs index.js |
The code and instructions in this gist are from http://peterdowns.com/posts/open-iterm-finder-service.html. I've had to do this a few times and wanted to distill it the basics.
AutomatorApplicationActions > Utilities > Run Applescriptopen_in_iterm.app into the window.