字幕组成品列表（Beta）
  • 写在前面
  • Android 平台
    • Game On! 游戏开发系列 - 031
      • Pie Noon - 1503060393
      • The Death of Base Game Activity - 1504030543
      • Surviving OpenGL Context Loss - 1504030546
      • WebP for Game Devs - 1504030547
      • Saved Games In-Depth (Part 1) - 1504070556
      • Saved Games In-Depth (Part 2) - 1504030548
      • Smaller Flipbook Textures with CRABBY - 1504030544
      • Google Tag Manager - 1504030545
      • Flatbuffers - 1505050794
      • Achievement Point Pointers - 1505050796
      • Frequency Scaling - 1505050797
      • Meet the Management APIs - 1501140367
      • Y U Ship Broken Games - 1505050795
    • Android 性能优化 - 088
      • Garbage Collection in Android - 1503170425
      • Performance Cost of Memory Leaks - 1503170424
      • Rendering Performance 101 - 1501130351
      • Understanding Overdraw - 1501130352
      • Understanding VSYNC - 1501130353
      • Tool - Profile GPU Rendering - 1501130354
      • Why 60fps? - 1501130355
      • Android UI and the GPU - 1501130356
      • Invalidations, Layouts, and Performance - 1501130357
      • Overdraw, Cliprect, QuickReject - 1501130358
      • Tool - Memory Monitor - 1501130363
      • Battery Performance 101 - 1501130364
      • Understanding Battery Drain on Android - 1501130365
      • Battery Drain and WakeLocks - 1501130366
      • Memory Performance 101 - 1504170661
    • I/O 2014 Android 开发专题 - 089
      • Activity Transitions - 1504020505
      • Building Apps For Android TV - 1504020520
      • Building great Android media experiences - 1504020510
      • Building a quality app from start to finish - 1504020515
      • App Indexing API - 1504020507
      • What's new in WebView - 1504010484
      • Bluetooth Low Energy - 1504010486
      • Building impressive Android media experiences - 1504010493
      • The next Generation of Authentication - 1504020497
      • Don't Alpha That Pixel! - 1504020523
      • NFC + HCE Your phone in an interactive world - 1504020509
      • Demystifying encodes and decodes of WebM - 1504020521
      • Google Cloud Messaging - 1504020524
      • Getting your Game on the Big Screen - 1504020518
      • I hear you like realtime memes - 1504020511
      • Offerize your App - 1504020506
      • Using the Android Job Scheduler - 1504020504
      • From Holo to Material - 1504020526
      • Under the Hood of Android Auto - 1504020501
      • Isolation for Android App Developers - 1504020498
      • Android Work - 1504010496
      • ExoPlayer: Adaptive video streaming on Android - 1504010489
      • Sample rates and resampling: Why can't we all just agree? - 1504010488
      • Drive Android API - 1504010485
    • Android Studio - 004
      • Layout Editor (Ep 3, Android Studio) - 1503290479
      • Introducing Gradle (Ep 2, Android Studio) - 1503170426
    • I/O 2014 Android 分发主题 - 091
      • Introduction to Google Play - 1504030534
      • Google Play: building your user community - 1504030535
      • Optimizing Apps for Education - 1504030536
      • Succeeding in Education Technology - 1504030530
      • Subscriptions Made Easy with Google Play - 1504030531
      • The world is your playground - go global with Google - 1504030533
      • Maximizing discoverability on Google Play - 1504030538
    • Android Auto - 003
      • Introduction to Android Auto - 1504130615
      • Android Auto Messaging - 1504130617
      • Android Auto Audio - 1504130616
    • Android Wear - 006
      • Designing for Android Wear - 1503210448
      • How We Customized Google Apps for Android Wear - 1503210450
      • Fullscreen apps for Android Wear - 1503210445
      • New Notification Features for Android Wear - 1503210446
      • Building Cloud-powered wearable Apps - 1503210449
      • An Introduction to Android Wear - 1503190435
      • Google I/O 2014 - Android Wear: The developer's perspective - 1503210442
      • Devoxx 2014 Interviews: Android Wear - 1503210440
      • DevBytes: Watch Faces for Android Wear - 1503210439
    • Android TV - 005
      • Using the Leanback library - 1504080588
      • Beach Buggy Racing Multiplayer with Nearby Connections (Play Services) - 1503060387
    • Android for Work - 106
      • Android for Work for Developers - 1503060390
      • App Configurations, Testing and Launchers - 1504110590
    • IO Bytes 2014 - Android - 066
      • Chrome Apps on Android and iOS - 1501080014
      • Perf Primer CPU, GPU and your Android game - 1501080017
  • Chrome 平台
    • IO Bytes 2014 - Chrome and Web - 067
      • Using the PageSpeed API - 1505070815
      • Fabulous Forms for the multi-device web - 1505070816
      • Testing multi-screen web pages - 1505070817
      • Responsive images today - 1505070819
      • Web Performance Testing at YouTube - 1505070828
      • Building sites for the multi-device web - 1505070820
      • Deep dive: Google Cloud Messaging for Chrome - 1505070827
  • Google 创业者资源
    • Coffee with a Googler - 012
      • Chat with Allen Huang of AndroidTV - 1503040384
      • Chat with Fred Chung about developer advocacy - 1503070395
      • Google Fit platform with Michelle Haq - 1503210443
      • Android Auto Product Manager Andrew Brenner - 1501120027
      • Chat with Francis Ma about Google Play services - 1501120028
    • Root Access For Startups - 077
      • What we learned building plug-ins for Android, with startup Magnet - 1503230453
      • How to use crowdfunding to your advantage, with startup Hale Devices - 1503280462
      • How to overcome customer objections when selling tech, with startup Guesswork - 1503280458
    • First Things First - 029
      • Getting started with Android: A crash-course in developing for Android - 1504120601
      • How to ask a question: conducting research for your startup - 1504120603
      • MVP Design Hacks: transform your hot idea into a validated prototype - 1504120602
      • Build something people want: Solving real problems - 1504120605
    • How I - 061
      • Use BigQuery to find my most valuable customers - 1504070573
      • Manage beta testing communities using Google Play - 1504070572
      • Use paper wireframing to build native prototypes - 1504070570
      • Used social media and $0 marketing to get 68 million users - 1504070568
      • Prep to fundraise with four questions - 1504070564
      • Validated my idea in 2 days (with no code) - 1504070562
      • Build open platforms on Android - 1504120596
      • Get cheap, automatic analytics for my business using BigQuery - 1504070571
      • Write press releases to get international media coverage - 1504070569
      • Test beta-product features using Google Apps - 1504070563
      • Use URL builder to measure ROI on social media - 1504070561
      • Use events to build DeadSocial's brand - 1504070557
      • Use BigQuery to visualize streaming data - 1503220452
      • Find, screen, and hire developers - 1503120406
      • Drive engagement with social challenges - 1504070558
  • 设计
    • DesignBytes - 017
      • Paper and Ink: The Materials that Matter - 1505050793
  • 云计算
    • DevBytes: Google Cloud Platform - 021
      • Powering the next killer app with the Google Cloud Platform - 1504210672
      • Introduction to Google Cloud Endpoints - 1504210675
      • The Beauty of Scale with Google Cloud Platform - 1504210678
    • Google Cloud Platform - Big Data - 105
      • GDELT & BigQuery: Understand the world - 1502200379
    • Uncategorized - 999
      • Introducing Google Cloud Platform Resources - 1501190370
  • Google 应用开发
    • Launchpad Online - 072
      • The Setup: Creating new apps using Google APIs - 1503190428
      • Listing your files in Google Drive - 1503190429
      • Customizing Google Analytics for your startup - 1503290473
      • The Launchpad Online series - 1503190427
      • Getting started with Google Analytics - 1503290472
      • Accessing Google Maps from a spreadsheet?!? - 1502220381
      • Change the world in 10 lines of code - 1503080398
    • Google Play Services - 054
      • Google Play services 6.1 - 1503290481
      • Google Play Services 7.0 - 1503200437
      • Google Play Services 6.5 - 1501080015
    • 谷歌地图 iOS SDK - 053
      • Maps Live: New Features in the Google Maps Mobile APIs for Android and iOS - 1504300777
    • Google 移动搜索开发 - 055
      • Is your app in the Google index? - 1504120598
      • Get more engaged users with Google Search for Developers - 1503070397
    • DevBytes: Google Cast - 020
      • Google Cast SDK for Android - 1504180666
      • Media Router Framework - Part 1 - Media Router API - 1504180667
      • Overview for Google Cast Receivers - 1504180664
      • Google Cast SDK for iOS - 1504180663
    • Getting Started with the Google Maps SDK for iOS - 035
      • Getting started with the Google Maps SDK for iOS, Part 1 - 1504270757
    • IO Bytes 2014 - Wearables - 070
      • Voice Driven GDK Glassware - 1505280836
    • Route 85 - 078
      • Introducing Route 85 - 1501120022
      • Quick Tip: Don't Default that Switch! - 1501190371
      • OpenInChrome on iOS, Part 1 - 1501120023
      • OpenInChrome on iOS, Part 2 - 1501120024
      • OpenInChrome on iOS, Part 3 - 1501120025
      • OpenInChrome on iOS, Part 4 - 1501120026
    • DevBytes 2014 - 019
      • Web Components - Template - 1505040789
      • Wearable DataLayer API - 1505050792
      • Using srcset for responsive images - 1505050790
      • The picture element for art direction - 1505050791
    • Uncategorized - 999
      • Sun Surveyor brings augmented reality to photographers using Google Maps APIs - 1504200668
      • Snappy travels with the Roads API - 1503060392
      • Easy Maps Apps in Java and Python - 1501140030
  • Google 广告平台
  • Polymer
    • Polycasts - 076
      • The Awesome Power of Auto-Binding Templates -- Polycasts #08 - 1502220382
      • Content Switcheroo with Core-Pages -- Polycasts #09 - 1502200380
      • Core Iconset -- Polycasts #02 - 1505040788
  • Web 平台
    • HTTP 203 - 062
      • Gotchas - 1501140368
      • Font Rendering - 1501080016
    • Web Components - 081
      • DevBytes: Web Components - Overview - 1504250709
  • 宣传视频
    • Uncategorized - 999
      • Google Developers - 1501150369
      • I/O Extended 2014 - Join me - 1502220383
  • Google 各类开发者会议
    • 2014 Chrome 开发者高峰会议 - 009
      • Keynote - Chrome Dev Summit 2014 (Darin Fisher) - 1503120407
      • TLS All the Things! - Security with Performance(Chris Palmer) - 1503140412
      • Let’s build some apps with Polymer!(Rob Dodson) - 1503150415
      • Day One Closing Remarks(Sundar Pichai) - 1503150417
      • Chrome Leadership panel - 1503160422
      • Fundamentals of Mobile Web Development(Matt Gaunt) - 1503150416
    • 2015 游戏开发者大会中 - 039
      • FlatBuffers - 1504150640
      • Games for Google Cast - 1504150637
      • Top 10 Things Android Game Developers Should Know v 3.0 - 1504150643
      • Automate Publishing for Google Play APIs - 1504150639
      • 3 Game Design Mistakes You're Making - 1504150636
      • Android TV - 1504150638
      • How to Go Viral Without Really Trying - 1504150641
    • Devoxx 2014 Interviews - 024
      • What's new in Android 5.0 Lollipop - 1504260740
      • Android Tools - 1504260743
      • BigQuery and user-defined functions - 1504260744
    • IO Bytes 2014 - 065
      • Dart in Google Cloud - 1505070810
      • Big genomic data on Google Cloud Platform - 1505070811
      • Easy International Checkout with Chrome - 1505070802
      • Google developer tools and APIs for iOS - 1503190436
      • Whet your appetite with IO Bytes - 1501080021
    • PlayTime@Shanghai - 095
      • 主题演讲 Chris Yerga - 1504060549
      • 如何成功地开发你的应用 Ellie Powers - 1504060550
      • 在Google上营利 Brahim Elbouchikhi - 1504060551
      • Playtime Shanghai event sizzle reel - 1504070552
    • Project Google I/O 2015 - 098
      • Project Tango Mobile 3D tracking and perception - 1506120857
      • Democratizing Education - 1506120868
      • Improve your Android app’s accessibility - 1506120864
      • Google Cloud Messaging 3.0 - 1506120844
      • Developers connecting the world through Google Play - 1506120862
  • 开源开放技术
    • Compressor Head - 013
      • The Trailer, Season 2 - 1503060385
      • Behind the Scenes - 1503210441
      • Arithmetic Compression (Ep 5, Compressor Head) Google - 1503070394
      • Introducing Compressor Head - 1502120372
      • Episode 1 (Variable Length Codes) - 1502120373
      • Episode 2 (The LZ77 Compression Family) - 1502120374
      • Episode 3 (Markov Chain Compression) - 1502120375
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  1. Google 应用开发
  2. DevBytes 2014 - 019

Web Components - Template - 1505040789

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视频发布时间

2014年10月2日

视频介绍

Web Components are a set of technologies that changes the way you develop web apps entirely. By making components scoped and reusable in standardized way, your web development will step up to the next level. In this video, you will learn how to work with Template.

视频推介语

暂无，待补充。

译者信息

翻译

润稿

终审

原始链接

中文字幕

翻译流水号

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隆斯朝

Alice

——

1505040789

解说词中文版：

EIJI KITAMURA: 使用

可重用的 Web 组件 可以使您建立一个很棒的网站

但是怎样构建一个 web 组件呢

我是 Eiji 我现在将

给你介绍模板元素

模板化的想法并不是一件新事物

从服务器端开始

模板就已是一种广泛使用的技术 用于在HTML内分配变量

设置条件和定义重复内容

在浏览器方面 各种库类使用JavaScript

也做了类似的尝试

比如 Handlebars.js，Underscore.js，AngularJS 等等很多

他们都很好 但是

这些库所采取的办法可能有缺陷

在这个示例中 该模板实际上

是一个div标签 隐藏在了 CSS中

这种方法的一个缺点是

浏览器会在这些资源还没有被使用的时候

就从模板的里面获取资源

比如这个图形元素

这是在浪费资源和性能

另一种方法是用Script标签

存储模板内容

这种方法的缺点是这个模板

将被通过内部 HTML 转换为 DOM 元素

如果不进行充分的检查

它可能会引入跨站点脚本漏洞

模板元素可以解决这些问题

模板允许您声明解析为 HTML 的片段

但不会在运行时被使用

只有当你需要使用它们的时候才会被实例化

模板元素本身不会呈现自己的内容

不会获取任何资源 比如脚本 样式或图像资源

也不会解释其内部的脚本

当前模板元素

已经被 Chrome Firefox 和 Opera 浏览器所支持

预计Safari 会在第8版上支持模板元素

但你们也知道事情变化很快

所以请关注 chromestatus.com

要检测模板标签的可用性

看一下在窗口对象中是否有HTML模板元素

对于不支持的浏览器 您可以使用 platform.js

它是网页元素填充物的集合

是填充物库（polyfills library）的一部分

它将自动检测模板元素的可用性

并在需要时使用它

向 HTML 中添加您自己的模板真的非常简单

只需要用模板标签把模板标记包起来即可

这将使您的标记无效

因此，如果将不再呈现在页上直到你阻止它

您需要编写一些 JavaScript 来阻止模板

通过使用 document.importNode

可以创建一个模板内容的副本

注意设置第二个参数为真使它进行深拷贝

一旦你创建好了副本

您可以在任何地方添加它

在继续之前你应该注意到

模板本身是标记的一个容器

你可能希望有一些像占位符 重复语句或条件语句的东西

但他们不是标准模板元素的一部分

如果你想要使用这些高级的功能

我建议您使用 web 组件框架

比如 Polymer 或 X-Tag

所以 这就是模板元素

想要学习模板元素的更多细节

请阅读 Eric Bidelman 写的 HTML5 Rocks

感谢观看

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