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Issue 20778002: more link tweaking (Closed) Base URL: https://github.com/dart-lang/dartlang.org.git@master
Patch Set: getting ready for push Created 7 years, 4 months ago
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1 --- 1 ---
2 layout: default 2 layout: default
3 title: "Connect Dart & HTML" 3 title: "Connect Dart & HTML"
4 description: "Shows basic scaffolding of a Dart web app" 4 description: "Shows basic scaffolding of a Dart web app"
5 has-permalinks: true 5 has-permalinks: true
6 tutorial: 6 tutorial:
7 id: connect-dart-html 7 id: connect-dart-html
8 next: add-elements 8 next: add-elements/
9 next-title: "Add Elements to the DOM" 9 next-title: "Add Elements to the DOM"
10 prev: get-started 10 prev: get-started/
11 prev-title: "Get Started" 11 prev-title: "Get Started"
12 --- 12 ---
13 13
14 {% capture whats_the_point %} 14 {% capture whats_the_point %}
15 15
16 * The DOM models a browser page in a tree/node structure. 16 * The DOM models a browser page in a tree/node structure.
17 * An HTML file hosts your Dart code in a browser page. 17 * An HTML file hosts your Dart code in a browser page.
18 * Use query() with an ID to get an element from the DOM. 18 * Use query() with an ID to get an element from the DOM.
19 * Control run-time configurations in Dart Editor with named launches. 19 * Control run-time configurations in Dart Editor with named launches.
20 * Compile to JavaScript to run in any modern browser. 20 * Compile to JavaScript to run in any modern browser.
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160 Dart Editor creates a directory called mini and, within it, 160 Dart Editor creates a directory called mini and, within it,
161 the files and directories needed for a web application. 161 the files and directories needed for a web application.
162 162
163 <img src="images/new-app-files.png" 163 <img src="images/new-app-files.png"
164 alt="After new application created"> 164 alt="After new application created">
165 165
166 * The top-level directory is named after the application. 166 * The top-level directory is named after the application.
167 167
168 * The pubspec.yaml file is used by applications 168 * The pubspec.yaml file is used by applications
169 that rely on external packages of Dart code. 169 that rely on external packages of Dart code.
170 [Target 5: Install Shared Packages](/docs/tutorials/packages/) 170 [Target 5: Install Shared Packages](/docs/tutorials/shared-pkgs/)
171 provides more information. 171 provides more information.
172 Web applications use a package called `browser`. 172 Web applications use a package called `browser`.
173 This dependency is declared in the pubspec.yaml file. 173 This dependency is declared in the pubspec.yaml file.
174 174
175 * The web directory contains the Dart, HTML, and CSS code for the web app. 175 * The web directory contains the Dart, HTML, and CSS code for the web app.
176 176
177 * The main source file, mini.dart in this sample, 177 * The main source file, mini.dart in this sample,
178 contains boilerplate code for the clickme app 178 contains boilerplate code for the clickme app
179 you saw in the previous target. 179 you saw in the previous target.
180 You will edit the code in this file and 180 You will edit the code in this file and
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210 <img src="images/0-mini-code-walk-through.png" 210 <img src="images/0-mini-code-walk-through.png"
211 alt="Import Dart HTML library"> 211 alt="Import Dart HTML library">
212 212
213 This program imports Dart's HTML library, 213 This program imports Dart's HTML library,
214 which contains the classes and functions for programming the DOM. 214 which contains the classes and functions for programming the DOM.
215 Generally speaking, all Dart web apps need the Dart HTML library. 215 Generally speaking, all Dart web apps need the Dart HTML library.
216 Key classes include: 216 Key classes include:
217 217
218 | Dart class | Description | 218 | Dart class | Description |
219 |---|---| 219 |---|---|
220 | <a href="http://api.dartlang.org/dart_html/Node.html" target="_blank">Node</a> | Implements a Dart Node. | 220 | <a href="https://api.dartlang.org/dart_html/Node.html" target="_blank">Node</a > | Implements a Dart Node. |
221 | <a href="http://api.dartlang.org/dart_html/Element.html" target="_blank">Eleme nt</a> | A subclass of Node, implements a web page element. | 221 | <a href="https://api.dartlang.org/dart_html/Element.html" target="_blank">Elem ent</a> | A subclass of Node, implements a web page element. |
222 | <a href="http://api.dartlang.org/dart_html/Document.html" target="_blank">Docu ment</a> | Another subclass of Node. Implements the document object. | 222 | <a href="https://api.dartlang.org/dart_html/Document.html" target="_blank">Doc ument</a> | Another subclass of Node. Implements the document object. |
223 {: .table} 223 {: .table}
224 224
225 The Dart core library contains another useful class, 225 The Dart core library contains another useful class,
226 <a href="http://api.dartlang.org/dart_core/List.html" target="_blank">List</a>, 226 <a href="https://api.dartlang.org/dart_core/List.html" target="_blank">List</a>,
227 a parameterized class that can specify the type of its members. 227 a parameterized class that can specify the type of its members.
228 The Element class keeps its list of child Elements 228 The Element class keeps its list of child Elements
229 in a List\<Element>, a list that can contain only Element objects. 229 in a List\<Element>, a list that can contain only Element objects.
230 230
231 ###Using the query() function 231 ###Using the query() function
232 232
233 This app's main() function contains a single 233 This app's main() function contains a single
234 line of code that is a little like a run-on sentence 234 line of code that is a little like a run-on sentence
235 with multiple things happening one after another. 235 with multiple things happening one after another.
236 Let's deconstruct it. 236 Let's deconstruct it.
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379 and then click the Run button 379 and then click the Run button
380 <img src="images/run.png" width="16" height="16" 380 <img src="images/run.png" width="16" height="16"
381 alt="Run button">. 381 alt="Run button">.
382 Dart Editor invokes Dartium 382 Dart Editor invokes Dartium
383 and loads `mini.html` in it. 383 and loads `mini.html` in it.
384 Below is mini app running in a frame. 384 Below is mini app running in a frame.
385 The app just displays a line of text. 385 The app just displays a line of text.
386 386
387 <iframe class="running-app-frame" 387 <iframe class="running-app-frame"
388 style="height:150px;width:300px;" 388 style="height:150px;width:300px;"
389 src="http://dart-lang.github.com/dart-tutorials-samples/web/target02/min i/web/mini.html"> 389 src="http://dart-lang.github.io/dart-tutorials-samples/web/target02/mini /web/mini.html">
390 </iframe> 390 </iframe>
391 391
392 The Dart web app changed 392 The Dart web app changed
393 the text in the browser window dynamically at runtime. 393 the text in the browser window dynamically at runtime.
394 Of course, placing static text on a browser page 394 Of course, placing static text on a browser page
395 and doing nothing else 395 and doing nothing else
396 could be accomplished with straight HTML. 396 could be accomplished with straight HTML.
397 This little app only shows you how to make a connection 397 This little app only shows you how to make a connection
398 from a Dart app to a browser page. 398 from a Dart app to a browser page.
399 399
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525 alt="HTML with CSS"> 525 alt="HTML with CSS">
526 526
527 Save your files and run the app again. 527 Save your files and run the app again.
528 528
529 Below is the revised mini app, 529 Below is the revised mini app,
530 which is slightly more colorful 530 which is slightly more colorful
531 but still neither interactive nor interesting. 531 but still neither interactive nor interesting.
532 532
533 <iframe class="running-app-frame" 533 <iframe class="running-app-frame"
534 style="height:150px;width:300px;" 534 style="height:150px;width:300px;"
535 src="http://dart-lang.github.com/dart-tutorials-samples/web/target02/min i_with_style/web/mini_with_style.html"> 535 src="http://dart-lang.github.io/dart-tutorials-samples/web/target02/mini _with_style/web/mini_with_style.html">
536 </iframe> 536 </iframe>
537 537
538 ##About CSS selectors {#about-css-selectors} 538 ##About CSS selectors {#about-css-selectors}
539 539
540 IDs, classes, and other information about elements 540 IDs, classes, and other information about elements
541 are established in HTML. 541 are established in HTML.
542 Your Dart code can use this information 542 Your Dart code can use this information
543 to get elements using a CSS selector&mdash;a pattern 543 to get elements using a CSS selector&mdash;a pattern
544 used to select matching elements in the DOM. 544 used to select matching elements in the DOM.
545 CSS selectors allow the CSS, HTML, and Dart code 545 CSS selectors allow the CSS, HTML, and Dart code
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637 where you'll find many recipes about 637 where you'll find many recipes about
638 manipulating the DOM and using CSS. 638 manipulating the DOM and using CSS.
639 The cookbook also has recipes about basic Dart data types, 639 The cookbook also has recipes about basic Dart data types,
640 such strings, lists, maps, and numbers. 640 such strings, lists, maps, and numbers.
641 </li> 641 </li>
642 </ul> 642 </ul>
643 643
644 {% endcapture %} 644 {% endcapture %}
645 645
646 {% include tutorial.html %} 646 {% include tutorial.html %}
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