forked from regularjs/guide
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathanimation.html
More file actions
1045 lines (557 loc) · 47 KB
/
Copy pathanimation.html
File metadata and controls
1045 lines (557 loc) · 47 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<!DOCTYPE HTML>
<html lang="zh-hans" >
<head>
<meta charset="UTF-8">
<meta content="text/html; charset=utf-8" http-equiv="Content-Type">
<title>️动画 · Regular官方指南</title>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="description" content="">
<meta name="generator" content="GitBook 3.2.3">
<meta name="author" content="leeluolee">
<link rel="stylesheet" href="../gitbook/style.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-splitter/splitter.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-search-plus/search.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-expandable-chapters-small/expandable-chapters-small.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-anchor-navigation-ex/style/plugin.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-highlight/website.css">
<link rel="stylesheet" href="../gitbook/gitbook-plugin-fontsettings/website.css">
<meta name="HandheldFriendly" content="true"/>
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black">
<link rel="apple-touch-icon-precomposed" sizes="152x152" href="../gitbook/images/apple-touch-icon-precomposed-152.png">
<link rel="shortcut icon" href="../gitbook/images/favicon.ico" type="image/x-icon">
<link rel="next" href="../advanced/" />
<link rel="prev" href="directive.html" />
</head>
<body>
<div class="book">
<div class="book-summary">
<div id="book-search-input" role="search">
<input type="text" placeholder="输入并搜索" />
</div>
<nav role="navigation">
<ul class="summary">
<li>
<a href="https://github.com/regularjs/regular" target="_blank" class="custom-link">Github</a>
</li>
<li class="divider"></li>
<li class="chapter " data-level="1.1" data-path="../">
<a href="../">
️介绍
</a>
<ul class="articles">
<li class="chapter " data-level="1.1.1" data-path="../intro/what.html">
<a href="../intro/what.html">
Regular是什么
</a>
</li>
<li class="chapter " data-level="1.1.2" data-path="../intro/hello.html">
<a href="../intro/hello.html">
️你好，Regular
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.2" data-path="./">
<a href="./">
基础
</a>
<ul class="articles">
<li class="chapter " data-level="1.2.1" data-path="component/">
<a href="component/">
️组件
</a>
</li>
<li class="chapter " data-level="1.2.2" data-path="interpolation.html">
<a href="interpolation.html">
️插值
</a>
</li>
<li class="chapter " data-level="1.2.3" data-path="event.html">
<a href="event.html">
️事件
</a>
</li>
<li class="chapter " data-level="1.2.4" data-path="statement/">
<a href="statement/">
️语句
</a>
<ul class="articles">
<li class="chapter " data-level="1.2.4.1" data-path="statement/list.html">
<a href="statement/list.html">
️列表渲染 - list
</a>
</li>
<li class="chapter " data-level="1.2.4.2" data-path="statement/if.html">
<a href="statement/if.html">
️条件渲染 - if
</a>
</li>
<li class="chapter " data-level="1.2.4.3" data-path="statement/include.html">
<a href="statement/include.html">
️结构引入 - include
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.2.5" data-path="../reference/expression.html">
<a href="../reference/expression.html">
表达式
</a>
</li>
<li class="chapter " data-level="1.2.6" data-path="data-binding.html">
<a href="data-binding.html">
数据监听
</a>
</li>
<li class="chapter " data-level="1.2.7" data-path="filter.html">
<a href="filter.html">
计算字段与过滤器
</a>
</li>
<li class="chapter " data-level="1.2.8" data-path="directive.html">
<a href="directive.html">
️指令
</a>
</li>
<li class="chapter active" data-level="1.2.9" data-path="animation.html">
<a href="animation.html">
️动画
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.3" data-path="../advanced/">
<a href="../advanced/">
深入组件
</a>
<ul class="articles">
<li class="chapter " data-level="1.3.1" data-path="../advanced/modular.html">
<a href="../advanced/modular.html">
继承与模块化
</a>
</li>
<li class="chapter " data-level="1.3.2" data-path="../advanced/composite.html">
<a href="../advanced/composite.html">
️组合 - 结构复用
</a>
</li>
<li class="chapter " data-level="1.3.3" data-path="../advanced/modify.html">
<a href="../advanced/modify.html">
️动态注入
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.4" data-path="../topic/">
<a href="../topic/">
专题
</a>
<ul class="articles">
<li class="chapter " data-level="1.4.1" data-path="../topic/template.html">
<a href="../topic/template.html">
模板管理
</a>
<ul class="articles">
<li class="chapter " data-level="1.4.1.1" >
<a target="_blank" href="https://github.com/regularjs/regular-loader">
单文件组件 - regular-loader
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.4.2" >
<a target="_blank" href="https://regularjs.github.io/regular-state/">
️单页系统
</a>
</li>
<li class="chapter " data-level="1.4.3" data-path="../topic/ssr.html">
<a href="../topic/ssr.html">
服务端渲染
</a>
</li>
<li class="chapter " data-level="1.4.4" data-path="../topic/mpregular.html">
<a href="../topic/mpregular.html">
微信小程序
</a>
</li>
<li class="chapter " data-level="1.4.5" data-path="../topic/performance.html">
<a href="../topic/performance.html">
性能指引
</a>
</li>
<li class="chapter " data-level="1.4.6" data-path="../topic/communication.html">
<a href="../topic/communication.html">
️跨组件通信
</a>
<ul class="articles">
<li class="chapter " data-level="1.4.6.1" data-path="../topic/redux.md">
<span>
与redux结合
</a>
</li>
<li class="chapter " data-level="1.4.6.2" data-path="../topic/rx.md">
<span>
与Rx结合(ing...)
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.4.7" data-path="../topic/todomvc.html">
<a href="../topic/todomvc.html">
50行代码的todomvc
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.5" data-path="../reference/">
<a href="../reference/">
索引手册
</a>
<ul class="articles">
<li class="chapter " data-level="1.5.1" data-path="../reference/api.html">
<a href="../reference/api.html">
API
</a>
</li>
<li class="chapter " data-level="1.5.2" data-path="../reference/styleguide.html">
<a href="../reference/styleguide.html">
风格指南
</a>
</li>
<li class="chapter " data-level="1.5.3" data-path="../reference/directive.html">
<a href="../reference/directive.html">
✔内建指令
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="1.6" data-path="../faq/">
<a href="../faq/">
FAQ
</a>
</li>
<li class="divider"></li>
<li>
<a href="https://www.gitbook.com" target="blank" class="gitbook-link">
本书使用 GitBook 发布
</a>
</li>
</ul>
</nav>
</div>
<div class="book-body">
<div class="body-inner">
<div class="book-header" role="navigation">
<!-- Title -->
<h1>
<i class="fa fa-circle-o-notch fa-spin"></i>
<a href=".." >️动画</a>
</h1>
</div>
<div class="page-wrapper" tabindex="-1" role="main">
<div class="page-inner">
<div class="search-plus" id="book-search-results">
<div class="search-noresults">
<section class="normal markdown-section">
<div id="anchor-navigation-ex-navbar"><i class="fa fa-anchor"></i><ul><li><span class="title-icon "></span><a href="#动画系统"><b> </b>动画系统</a></li><ul><li><span class="title-icon "></span><a href="#动画简介"><b>1. </b>动画简介</a></li><li><span class="title-icon "></span><a href="#内建command"><b>2. </b>内建Command</a></li><ul><li><span class="title-icon "></span><a href="#on-event"><b>2.1. </b>on: event</a></li><li><span class="title-icon "></span><a href="#when-expression"><b>2.2. </b>when: Expression</a></li><li><span class="title-icon "></span><a href="#class-classes-mode"><b>2.3. </b>class: classes, mode</a></li><li><span class="title-icon "></span><a href="#emit-event"><b>2.4. </b>emit: event</a></li><li><span class="title-icon "></span><a href="#call-expression"><b>2.5. </b>call: expression</a></li><li><span class="title-icon "></span><a href="#style-propertyname1-value1-propertyname1-value1-"><b>2.6. </b>style: propertyName1 value1, propertyName1 value1 ...</a></li><li><span class="title-icon "></span><a href="#wait-duration"><b>2.7. </b>wait: duration</a></li></ul><li><span class="title-icon "></span><a href="#animation"><b>3. </b>扩展动画</a></li><li><span class="title-icon "></span><a href="#跨节点的复杂动画序列"><b>4. </b>跨节点的复杂动画序列</a></li><li><span class="title-icon "></span><a href="#小节"><b>5. </b>小节</a></li></ul></ul></div><a href="#动画系统" id="anchorNavigationExGoTop"><i class="fa fa-arrow-up"></i></a><h1 id="动画系统"><a name="动画系统" class="anchor-navigation-ex-anchor" href="#动画系统"><i class="fa fa-link" aria-hidden="true"></i></a> 动画系统</h1>
<p>声明式动画绝对是所有MDV框架都面临的痛点，大部分框架都只处理了节点进入退出的场景。Regular的动画系统非常轻量级（代码量上），但是有很强大的实现，看看它的过人之处吧。</p>
<p><strong>本页方便起见依赖 <a href="https://daneden.github.io/animate.css/" target="_blank">animate.css</a> 来实现CSS3动画效果</strong></p>
<h2 id="动画简介"><a name="动画简介" class="anchor-navigation-ex-anchor" href="#动画简介"><i class="fa fa-link" aria-hidden="true"></i></a>1. 动画简介</h2>
<p>你可以通过<code>r-animation</code>指令来实现动画。</p>
<p><strong>Syntax</strong></p>
<pre><code class="lang-html">
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">"Sequence"</span>></span><span class="hljs-tag"></<span class="hljs-name">div</span>></span>
Sequence:
Command (";"" Command)*
Command:
CommandName ":"" Param;
CommandName: [-\w]+
Param: [^;]+
</code></pre>
<p><strong>Exmaple</strong></p>
<pre><code class="lang-html">
<span class="hljs-tag"><<span class="hljs-name">button</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">"
on: click;
class: animated swing;
wait: 500;
class: animated fadeOut; "</span>></span>点我动起来<span class="hljs-tag"></<span class="hljs-name">button</span>></span>
</code></pre>
<p>上例的意思是: </p>
<ol>
<li>当 <code>click</code> 触发时</li>
<li>为元素添加类名 <code>animated swing</code>，当 <code>transitionend</code> (或 <code>animationend</code>)触发时，移除它们</li>
<li>等待 500ms.</li>
<li>与第二步类似</li>
<li>动画结束 done。(由于移除的添加的样式，节点会重新出现)</li>
</ol>
<script async src="//jsfiddle.net/leeluolee/fjyc4r9m/embed/result/"></script>
<p>可以看到，一个单独节点的缓动序列是由一系列的 <code>Command</code> 构成的， 先看看内建的Command吧</p>
<h2 id="内建command"><a name="内建command" class="anchor-navigation-ex-anchor" href="#内建command"><i class="fa fa-link" aria-hidden="true"></i></a>2. 内建Command</h2>
<p>Regular 内建了多个Command，其中比较特殊的是 <code>on</code> 和 <code>when</code>，它们是唯二的用于激活动画开始的Command</p>
<h3 id="on-event"><a name="on-event" class="anchor-navigation-ex-anchor" href="#on-event"><i class="fa fa-link" aria-hidden="true"></i></a>2.1. on: event</h3>
<p>当特定的 event 触发时开始动画，<strong>event可以是当前节点的DOM事件，也可以是所在组件的事件</strong>。</p>
<blockquote>
<p><em>注意: Regular会先去检查event是否是个DOM事件，如果不是，则会转而监听组件事件</em></p>
</blockquote>
<p>为实现渐入渐出效果，Regular 提供两个模拟事件</p>
<ul>
<li>enter: 在节点进入时触发</li>
<li>leave: 在节点退出时触发 (动画结束后，节点才会被真正移除)</li>
</ul>
<p>以下情况导致的节点进入退出会触发这两个事件</p>
<ul>
<li><a href="../reference/directive.html#r-hide"><code>r-hide</code>指令</a></li>
<li><a href="statement/if.html">if语句</a></li>
<li><a href="statement/list.html">list语句</a></li>
<li><a href="statement/include.html">include语句</a></li>
<li><a href="../reference/api.html#inject">component.$inject</a></li>
</ul>
<p><strong>Example</strong></p>
<pre><code class="lang-html"><span class="hljs-tag"><<span class="hljs-name">ul</span>></span>
{#list items as item}
<span class="hljs-tag"><<span class="hljs-name">li</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'animated'</span>
<span class="hljs-attr">r-animation</span>=<span class="hljs-string">'
on:enter;
class: fadeIn;
on:leave;
class: fadeOut'</span>></span>{item.content}<span class="hljs-tag"></<span class="hljs-name">li</span>></span>
{/list}
<span class="hljs-tag"></<span class="hljs-name">ul</span>></span>
</code></pre>
<script async src="//jsfiddle.net/leeluolee/xsenfrdq/embed/js,result/"></script>
<h3 id="when-expression"><a name="when-expression" class="anchor-navigation-ex-anchor" href="#when-expression"><i class="fa fa-link" aria-hidden="true"></i></a>2.2. when: Expression</h3>
<p>当表达式为真触发动画</p>
<pre><code class="lang-html">
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'animated'</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">'when: status===1; class: swing;'</span>></span><span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p>当<code>component.data.status</code>为1时，会触发此动画效果。</p>
<h3 id="class-classes-mode"><a name="class-classes-mode" class="anchor-navigation-ex-anchor" href="#class-classes-mode"><i class="fa fa-link" aria-hidden="true"></i></a>2.3. class: classes, mode</h3>
<p>class是基于CSS3的动画Command，它会等待动画结束之后(transitionend 或 animationend)，再执行后续效果。</p>
<p><strong>参数</strong></p>
<ul>
<li><p>classes: 空格分割的 className</p>
</li>
<li><p>mode (Number): 添加 class 的模式</p>
<p><code>Command: class</code>的形为取决于 <code>mode</code>参数，一共有四种 mode.</p>
<ul>
<li>1: 默认 mode，首先加指定类名到节点，当动画结束移除它</li>
<li>2: 首先添加 class 到节点，然后在 nextTick 添加<code>class-active</code>到节点用以触发动画，当动画结束移除所有类名</li>
<li>3: 与 mode1 类似，但是动画结束后，我们不移除类名</li>
<li>4: 移除指定类名，并等待动画结束。</li>
</ul>
</li>
</ul>
<p><strong>example</strong></p>
<pre><code class="lang-html"><span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"box1 animated"</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">"on:click;class: fadeIn, 1"</span>></span>box1<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"box2 animated"</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">"on:click;class: fadeIn, 2"</span>></span>box2<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">id</span>=<span class="hljs-string">"box3 animated"</span> <span class="hljs-attr">r-animation</span>=<span class="hljs-string">"on:click;class: fadeIn, 3"</span>></span>box3<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p>每当点击box1, box2 或 box3. 它们分别会产生不同的效果</p>
<p><strong>box1</strong>:</p>
<ol>
<li>添加 <code>animated fadeIn</code></li>
<li>等待 <code>animationend</code> 移除它们</li>
</ol>
<p><strong>box2</strong>:</p>
<ol>
<li>添加 <code>animated fadeIn</code></li>
<li>添加 <code>animated-active fadeIn-active</code> at next-tick(to trigger the animation)</li>
<li>等待 <code>animationend</code> 然后移除所有 <code>animated fadeIn animated-active fadeIn-active</code></li>
</ol>
<p><strong>box3</strong>:</p>
<ol>
<li>添加 <code>animated fadeIn</code></li>
<li>等待 <code>animationend</code>，动画结束</li>
</ol>
<h3 id="emit-event"><a name="emit-event" class="anchor-navigation-ex-anchor" href="#emit-event"><i class="fa fa-link" aria-hidden="true"></i></a>2.4. emit: event</h3>
<p>抛出某个事件，<strong>注意这可能会触发另一个动画序列</strong>（被命令 <code>on</code> 捕获）</p>
<pre><code class="lang-html">
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">on:</span> <span class="hljs-attr">click</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span> ;
<span class="hljs-attr">emit:</span> <span class="hljs-attr">swing-over</span> ;
<span class="hljs-attr">class:</span> <span class="hljs-attr">shake</span>;
<span class="hljs-attr">emit:</span> <span class="hljs-attr">shake-over</span>"
></span>
box1: trigger by click
<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">on:</span> <span class="hljs-attr">swing-over</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span>;
<span class="hljs-attr">on:</span> <span class="hljs-attr">shake-over</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">shake</span>;
"></span>box2: after box1 swing<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p>box1 通过抛出 <code>swing-over</code> 事件触发了box2的动画。</p>
<script async src="//jsfiddle.net/leeluolee/0cpL6rzy/embed/result/"></script>
<h3 id="call-expression"><a name="call-expression" class="anchor-navigation-ex-anchor" href="#call-expression"><i class="fa fa-link" aria-hidden="true"></i></a>2.5. call: expression</h3>
<p>运行一个表达式并进入脏检查，<strong>注意，与emit类似，这里可能会触发另外一个动画序列</strong>(被命令<code>when</code>捕获)</p>
<pre><code class="lang-html">
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">when:test</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span> ;
<span class="hljs-attr">call:</span> <span class="hljs-attr">otherSwing</span>=<span class="hljs-string">true</span> ;
<span class="hljs-attr">class:</span> <span class="hljs-attr">shake</span>"></span>
box1: trigger by checkbox
<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
<span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">when:</span> <span class="hljs-attr">otherSwing</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span>;
"></span>box2: after box1 swing<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p><strong>流程描述</strong></p>
<ol>
<li>当 <code>test == true</code> 激活box1的动画</li>
<li>swing动画结束之后，设置<code>otherSwing=true</code></li>
<li>这个导致box2的动画序列开始</li>
<li>box2 swing box1也在进行shake</li>
</ol>
<h3 id="style-propertyname1-value1-propertyname1-value1-"><a name="style-propertyname1-value1-propertyname1-value1-" class="anchor-navigation-ex-anchor" href="#style-propertyname1-value1-propertyname1-value1-"><i class="fa fa-link" aria-hidden="true"></i></a>2.6. style: propertyName1 value1, propertyName1 value1 ...</h3>
<p>设置样式并且等待 <code>transitionend</code>（如果可以触发的话）</p>
<p><strong>example</strong></p>
<pre><code class="lang-html"><span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">on:</span> <span class="hljs-attr">click</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span>;
<span class="hljs-attr">style:</span> <span class="hljs-attr">color</span> #<span class="hljs-attr">333</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">bounceOut</span>;
<span class="hljs-attr">style:</span> <span class="hljs-attr">display</span> <span class="hljs-attr">none</span>;
"></span>style: click me <span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p>添加 transition 来触发的缓动动画</p>
<pre><code class="lang-css"><span class="hljs-selector-class">.box</span><span class="hljs-selector-class">.animated</span>{
<span class="hljs-attribute">transition</span>: color <span class="hljs-number">1s</span> linear;
}
</code></pre>
<p>这个例子的意思是: </p>
<ul>
<li>一旦点击，swing动画。</li>
<li>结束后设置<code>color:#333</code>(激活transition动画)... </li>
<li>步骤结束后，进行bounceOut动画。</li>
<li>设置<code>display:none</code></li>
<li>动画序列结束</li>
</ul>
<script async src="//jsfiddle.net/leeluolee/pn2jufby/embed/result/"></script>
<h3 id="wait-duration"><a name="wait-duration" class="anchor-navigation-ex-anchor" href="#wait-duration"><i class="fa fa-link" aria-hidden="true"></i></a>2.7. wait: duration</h3>
<p>等待若干毫秒后再进入下一个步骤</p>
<p><strong>param</strong></p>
<ul>
<li>duration: 一个毫秒为单位的整数。</li>
</ul>
<pre><code class="lang-html"><span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">on:click</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span> ;
<span class="hljs-attr">wait:</span> <span class="hljs-attr">2000</span> ;
<span class="hljs-attr">class:</span> <span class="hljs-attr">shake</span>"></span>
wait: click me
<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<script async src="//jsfiddle.net/leeluolee/9vhdgw48/embed/result/"></script>
<h2 id="animation"><a name="animation" class="anchor-navigation-ex-anchor" href="#animation"><i class="fa fa-link" aria-hidden="true"></i></a>3. 扩展动画</h2>
<p>上例基本都依赖CSS3的动画，如果需要更精细的动画控制，或是需要兼容不支持CSS3的浏览器，可以通过<code>Component.animation接口</code>扩展你的动画Command（上述所有Command都基于此接口实现）</p>
<p><strong>参数</strong></p>
<ul>
<li>name(String): 命令名</li>
<li>handle(step): 序列命令定义，你需要在handle中返回一个函数<ul>
<li>step.element: 即上述element对象</li>
<li>step.param: 即上述param</li>
<li>返回值[Function]: handle函数必须返回一个动画处理函数，它接受一个参数<code>done</code>用来结束当前动画。</li>
</ul>
</li>
</ul>
<p><strong>Example</strong></p>
<p>实现一个渐入渐出的效果</p>
<pre><code class="lang-javascript">Regular.animation(<span class="hljs-string">"fade"</span>, <span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params">step</span>)</span>{
<span class="hljs-keyword">var</span> param = step.param, <span class="hljs-comment">// 传入fade的参数</span>
element = step.element, <span class="hljs-comment">//触发节点</span>
fadein = param === <span class="hljs-string">"in"</span>,
ratio = fadein? <span class="hljs-number">1.05</span>: <span class="hljs-number">0.9</span>;
<span class="hljs-comment">// 这个函数会在每次本步骤被触发时被调用，</span>
<span class="hljs-comment">// 它只接受一个done函数作为参数，标志着本步骤的结束</span>
<span class="hljs-keyword">return</span> <span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params">done</span>)</span>{
<span class="hljs-keyword">var</span> start = fadein? <span class="hljs-number">0.01</span>: <span class="hljs-number">1</span>;
<span class="hljs-keyword">var</span> tid = setInterval(<span class="hljs-function"><span class="hljs-keyword">function</span>(<span class="hljs-params"></span>)</span>{
start *= ratio
<span class="hljs-keyword">if</span>(fadein && <span class="hljs-number">1</span>- start < <span class="hljs-number">1e-3</span>){
start = <span class="hljs-number">1</span>;
clearInterval(tid);
done()
}<span class="hljs-keyword">else</span> <span class="hljs-keyword">if</span>(!fadein && start < <span class="hljs-number">1e-3</span>){
start = <span class="hljs-number">0</span>;
clearInterval(tid);
done()
}
element.style.opacity = start;
}, <span class="hljs-number">1000</span> / <span class="hljs-number">60</span>)
}
})
</code></pre>
<p>使用</p>
<pre><code class="lang-html"><span class="hljs-tag"><<span class="hljs-name">div</span> <span class="hljs-attr">class</span>=<span class="hljs-string">'box animated'</span> <span class="hljs-attr">r-animation</span>=
"<span class="hljs-attr">on:click</span>;
<span class="hljs-attr">class:</span> <span class="hljs-attr">swing</span> ;
<span class="hljs-attr">fade:</span> <span class="hljs-attr">out</span> ;
<span class="hljs-attr">fade:</span> <span class="hljs-attr">in</span>;
"></span>
fade: click me
<span class="hljs-tag"></<span class="hljs-name">div</span>></span>
</code></pre>
<p>⚠️当你定义的动画结束时，必须调用这个done函数，<strong>否则永远进入不了下一个动画步骤</strong></p>
<script async src="//jsfiddle.net/leeluolee/xLpa62zr/embed/result/"></script>
<p>查看内建命令<a href="https://github.com/regularjs/regular/blob/master/lib/directive/animation.js#L71" target="_blank">(github:animation.js#L71)</a>的实现来理解扩展动画 Command</p>
<blockquote>
<p>小贴士: 其实<code>r-animation</code> 不仅仅限于应用动画，它其实是个支持声明式表述的状态机，你可以利用它来实现一些异步序列。</p>
</blockquote>
<h2 id="跨节点的复杂动画序列"><a name="跨节点的复杂动画序列" class="anchor-navigation-ex-anchor" href="#跨节点的复杂动画序列"><i class="fa fa-link" aria-hidden="true"></i></a>4. 跨节点的复杂动画序列</h2>
<blockquote>
<p>这是一个显示肌肉但不被推荐在真实场景使用的例子</p>
</blockquote>
<p>可能相对于其他声明式的框架，Regular 的动画声明的写法上会繁琐一些，但是带来了无限的可能性，结合数据监听体系和事件系统，事实上你可以在 Regular 中实现任意复杂度，跨越任意节点的动画序列！</p>
<p><strong>Example</strong></p>
<script async src="//jsfiddle.net/leeluolee/L5faxjbh/embed/js,result/"></script>
<h2 id="小节"><a name="小节" class="anchor-navigation-ex-anchor" href="#小节"><i class="fa fa-link" aria-hidden="true"></i></a>5. 小节</h2>
<p>由于声明式动画的天然限制，不要奢求其对动画的控制力可以达到手动JS编码的自由度(比如使用velocity.js)。如果有难以实现且不可复用的场景，直接操作DOM来完成吧。</p>
<blockquote>
<p>建议优先使用事件来完成动画序列的串联。</p>
</blockquote>
</section>
</div>
<div class="search-results">
<div class="has-results">
<h1 class="search-results-title"><span class='search-results-count'></span> results matching "<span class='search-query'></span>"</h1>
<ul class="search-results-list"></ul>
</div>
<div class="no-results">
<h1 class="search-results-title">No results matching "<span class='search-query'></span>"</h1>
</div>
</div>
</div>
</div>
</div>
</div>
<a href="directive.html" class="navigation navigation-prev " aria-label="Previous page: ️指令">
<i class="fa fa-angle-left"></i>
</a>
<a href="../advanced/" class="navigation navigation-next " aria-label="Next page: 深入组件">
<i class="fa fa-angle-right"></i>
</a>
</div>