-
Notifications
You must be signed in to change notification settings - Fork 0
/
JS1-0.html
1240 lines (650 loc) · 37.7 KB
/
JS1-0.html
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>
<head hexo-theme='https://volantis.js.org/#2.1.2'>
<meta charset="utf-8">
<!-- SEO相关 -->
<!-- 渲染优化 -->
<meta name="renderer" content="webkit">
<meta name="force-rendering" content="webkit">
<meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1">
<meta name="HandheldFriendly" content="True" >
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
<!-- 页面元数据 -->
<title>JS简介 - CRainyDay</title>
<meta name="keywords" content="JS">
<meta name="description" content="JavaScript简介">
<!-- feed -->
<!-- import meta -->
<!-- link -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/[email protected]/css/all.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fancyapps/[email protected]/dist/jquery.fancybox.min.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/waves.min.css">
<link rel="shortcut icon" type='image/x-icon' href="https://cdn.jsdelivr.net/gh/crainyday/blog@master/favicon.ico">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/[email protected]/dist/APlayer.min.css">
<!-- import link -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/crainyday/blog@master/css/style.css">
<script>
function setLoadingBarProgress(num) {
document.getElementById('loading-bar').style.width=num+"%";
}
</script>
<!-- ba -->
<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?bf368df5385d5be3472f3155e4cdb303";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script>
</head>
<body>
<div id="loading-bar-wrapper">
<div id="loading-bar"></div>
</div>
<header class="l_header shadow floatable blur">
<div class='wrapper'>
<div class='nav-sub container--flex'>
<a class="logo flat-box"></a>
<ul class='switcher h-list'>
<li><a class="s-comment flat-btn fas fa-comments fa-fw" target="_self" href='javascript:void(0)'></a></li>
<li><a class="s-toc flat-btn fas fa-list fa-fw" target="_self" href='javascript:void(0)'></a></li>
</ul>
</div>
<div class="nav-main container container--flex">
<a class="logo flat-box" target="_self" href='/'>
<i class='fas fa-home'></i>
CRainyDay
</a>
<div class='menu navigation'>
<ul class='h-list'>
<li>
<a class="flat-box" href=/categories/
id="categories"
>
<i class='fas fa-folder-open fa-fw'></i>
分类
</a>
</li>
<li>
<a class="flat-box" href=/archives/
id="archives"
>
<i class='fas fa-archive fa-fw'></i>
归档
</a>
</li>
<li>
<a class="flat-box" href=/tags/
id="tags"
>
<i class='fas fa-tags fa-fw'></i>
标签
</a>
</li>
<li>
<a class="flat-box" href=/friends/
id="friends"
>
<i class='fas fa-link fa-fw'></i>
友链
</a>
</li>
<li>
<a class="flat-box"
>
<i class='fas fa-ellipsis-v fa-fw'></i>
更多
</a>
<ul class="submenu">
<li>
<a class="flat-box" href=/about/music.html
id="aboutmusic.html"
>
<i class='fas fa-music fa-fw'></i>
往后余生
</a>
</li>
<hr>
<li>
<a class="flat-box" href=/bbs/
id="bbs"
>
<i class='fas fa-comment-alt fa-fw'></i>
留言
</a>
</li>
<hr>
<li>
<a class="flat-box" href=/about/
id="about"
>
<i class='fas fa-info-circle fa-fw'></i>
关于
</a>
</li>
</ul>
</li>
</ul>
</div>
<div class="m_search">
<form name="searchform" class="form u-search-form">
<i class="icon fas fa-search fa-fw"></i>
<input type="text" class="input u-search-input" placeholder="搜索" />
</form>
</div>
<ul class='switcher h-list'>
<li><a class="s-search flat-btn fas fa-search fa-fw" target="_self" href='javascript:void(0)'></a></li>
<li><a class="s-menu flat-btn fas fa-bars fa-fw" target="_self" href='javascript:void(0)'></a></li>
</ul>
</div>
</div>
</header>
<ul class="menu-phone navigation white-box">
<li>
<a class="flat-box" href=/
id="home"
>
<i class='fas fa-home fa-fw'></i>
博客
</a>
</li>
<li>
<a class="flat-box" href=/archives/
id="archives"
>
<i class='fas fa-archive fa-fw'></i>
归档
</a>
</li>
<li>
<a class="flat-box" href=/categories/
id="categories"
>
<i class='fas fa-folder-open fa-fw'></i>
分类
</a>
</li>
<li>
<a class="flat-box" href=/friends/
id="friends"
>
<i class='fas fa-link fa-fw'></i>
友链
</a>
</li>
<li>
<a class="flat-box" href=/bbs/
id="bbs"
>
<i class='fas fa-comment-alt fa-fw'></i>
留言
</a>
</li>
<li>
<a class="flat-box" href=/about/
id="about"
>
<i class='fas fa-info-circle fa-fw'></i>
关于
</a>
</li>
</ul>
<script>setLoadingBarProgress(40);</script>
<div class="l_body nocover">
<div class='body-wrapper'>
<div class='l_main'>
<article id="post" class="post white-box shadow floatable article-type-post" itemscope itemprop="blogPost">
<section class='meta'>
<a title='JS简介' href='/JS1-0.html'><img class='thumbnail' src='https://cdn.jsdelivr.net/gh/crainyday/blog@master/imgs/more/more01.png'></a>
<div class="meta" id="header-meta">
<h1 class="title">
<a href="/JS1-0.html">
JS简介
</a>
</h1>
<div class='new-meta-box'>
<div class='new-meta-item author'>
<a href="https://crainyday.gitee.io" rel="nofollow">
<img src="https://cdn.jsdelivr.net/gh/crainyday/blog@master/lazyload.svg" data-original="https://cdn.jsdelivr.net/gh/crainyday/blog@master/avatar.png">
<p>crainyday</p>
</a>
</div>
<div class='new-meta-item category'>
<a href='/categories/%E5%89%8D%E7%AB%AF/JS/' rel="nofollow">
<i class="fas fa-folder-open" aria-hidden="true"></i>
<p>前端 / JS</p>
</a>
</div>
<div class="new-meta-item date">
<a class='notlink'>
<i class="fas fa-edit" aria-hidden="true"></i>
<p>发布于：2019年3月29日</p>
</a>
</div>
<div class="new-meta-item wordcount">
<a class='notlink'>
<i class="fas fa-keyboard" aria-hidden="true"></i>
<p>字数：676字</p>
</a>
</div>
<div class="new-meta-item readtime">
<a class='notlink'>
<i class="fas fa-hourglass-half" aria-hidden="true"></i>
<p>时长：2分钟</p>
</a>
</div>
</div>
<hr>
</div>
</section>
<section class="article typo">
<div class="article-entry" itemprop="articleBody">
<p>JavaScript简介</p>
<a id="more"></a>
<h2 id="一-起源">一.起源</h2>
<ul>
<li>JavaScript诞生于1995年, 它的出现主要是用于处理网页中的前端验证.</li>
<li>所谓的前端验证, 就是指检查用户输入的内容是否符合一定的规则.</li>
<li>比如: 用户名的长度，密码的长度，邮箱的格式等.</li>
</ul>
<h2 id="二-JavaScript构成">二.JavaScript构成</h2>
<ul>
<li>ECMAScript(JS的标准)</li>
<li>DOM(JS操作网页)</li>
<li>BOM(JS操作浏览器)</li>
</ul>
<h2 id="三-JS的特点">三.JS的特点</h2>
<ul>
<li>解释型语言</li>
<li>类似于 C 和 Java 的语法结构</li>
<li>动态语言</li>
<li>基于原型的面向对象</li>
<li>JavaScript是一门解释型语言, 所谓解释型值语言不需要被编译为机器码在执行, 而是直接执行.</li>
<li>JavaScript和与Java的关系也仅仅是看起来像而已</li>
<li>JavaScript是一门动态语言, 所谓的动态语言可以暂时理解为在语言中的一切内容都是不确定的. 比如一个变量, 这一时刻是个整型, 下一时刻可能会变成字符串了.</li>
<li>JS可能是运行速度最快的动态语言了</li>
<li>JavaScript是一门面向对象(基于原型的面向对象)的语言</li>
</ul>
<h2 id="四-JS的Hello-World">四.JS的Hello World</h2>
<h3 id="A-JS代码的位置">A.JS代码的位置</h3>
<ol>
<li>JS代码写在网页(.html文件)的script标签中</li>
<li>JS代码可以写在标签的onclick属性中, 点击时才会执行</li>
<li>JS代码写在超链接的href属性中, 点击时才会执行</li>
<li>JS代码写在外部.js文件中, 用script标签引入该文件到网页</li>
</ol>
<ul>
<li>虽然可以写在标签的属性中, 但是这样属于结构与行为耦合, 不方便维护, 不推荐使用</li>
<li>一般使用script引入外部js文件或将代码写在script标签中, 一旦script标签用于引入js文件, 那么就不能在里面编写js代码</li>
<li>JS代码按script标签先后顺序, 顺序执行</li>
</ul>
<p><font style='color:red;font-size:1.2em;font-weight:bold;'>注意: 本站所有的html代码, 均可直接复制, 然后粘贴到<font color="blue"><a href="http://www.w3school.com.cn/tiy/t.asp?f=html_intro" target="_blank" rel="noopener">W3School</a> </font>代码区, 点击提交代码在线执行.</font></p>
<p>例:</p>
<figure class="highlight html"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br></pre></td><td class="code"><pre><span class="line"><span class="meta"><!DOCTYPE html></span></span><br><span class="line"><span class="tag"><<span class="name">html</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">meta</span> <span class="attr">charset</span>=<span class="string">"utf-8"</span> /></span></span><br><span class="line"> <span class="tag"><<span class="name">title</span>></span>JS基础<span class="tag"></<span class="name">title</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">script</span> <span class="attr">type</span>=<span class="string">"text/javascript"</span>></span><span class="undefined"></span></span><br><span class="line"><span class="actionscript"> <span class="comment">//弹出窗口</span></span></span><br><span class="line"><span class="actionscript"> alert(<span class="string">"Hello Wrold!"</span>);</span></span><br><span class="line"><span class="actionscript"> <span class="comment">//输出在body标签中</span></span></span><br><span class="line"><span class="javascript"> <span class="built_in">document</span>.write(<span class="string">"Hello World!"</span>);</span></span><br><span class="line"><span class="actionscript"> <span class="comment">//输出在控制台</span></span></span><br><span class="line"><span class="javascript"> <span class="built_in">console</span>.log(<span class="string">"Hello World!"</span>);</span></span><br><span class="line"><span class="undefined"> </span><span class="tag"></<span class="name">script</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">script</span> <span class="attr">type</span>=<span class="string">"text/javascript"</span> <span class="attr">src</span>=<span class="string">"js/test.js"</span> ></span><span class="undefined"></span><span class="tag"></<span class="name">script</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">head</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">body</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">br</span> /></span></span><br><span class="line"> <span class="tag"><<span class="name">button</span> <span class="attr">onclick</span>=<span class="string">"alert('讨厌, 点我干嘛~~~')"</span>></span>点我一下试试<span class="tag"></<span class="name">button</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">br</span> /></span></span><br><span class="line"> <span class="tag"><<span class="name">a</span> <span class="attr">href</span>=<span class="string">"javascript:alert('让你点你就点?')"</span>></span>点我一下试试<span class="tag"></<span class="name">a</span>></span></span><br><span class="line"> <span class="tag"><<span class="name">a</span> <span class="attr">href</span>=<span class="string">"javascript:;"</span>></span>点我一下试试<span class="tag"></<span class="name">a</span>></span><span class="comment"><!--点击时什么都不做--></span></span><br><span class="line"> <span class="tag"><<span class="name">script</span> <span class="attr">type</span>=<span class="string">"text/javascript"</span>></span><span class="undefined"></span></span><br><span class="line"><span class="actionscript"> <span class="comment">//弹出窗口</span></span></span><br><span class="line"><span class="actionscript"> alert(<span class="string">"two"</span>);</span></span><br><span class="line"><span class="undefined"> </span><span class="tag"></<span class="name">script</span>></span></span><br><span class="line"> <span class="tag"></<span class="name">body</span>></span></span><br><span class="line"><span class="tag"></<span class="name">html</span>></span></span><br></pre></td></tr></table></figure>
<br>
<section class="widget copyright desktop mobile">
<div class='content'>
<blockquote>
<p>博客内容遵循 署名-非商业性使用-相同方式共享 4.0 国际 (CC BY-NC-SA 4.0) 协议</p>
<p>本文永久链接是：<a href=https://crainyday.gitee.io/JS1-0.html>https://crainyday.gitee.io/JS1-0.html</a></p>
</blockquote>
</div>
</section>
<section class="widget qrcode desktop mobile">
<div class='content article-entry'>
<fancybox><img src='https://cdn.jsdelivr.net/gh/crainyday/blog@master/alipay.png'
height='64px'
></fancybox>
<fancybox><img src='https://cdn.jsdelivr.net/gh/crainyday/blog@master/wechat.png'
height='64px'
></fancybox>
</div>
</section>
</div>
<section class='meta' id="footer-meta">
<div class='new-meta-box'>
<div class="new-meta-item date" itemprop="dateUpdated" datetime="2020-03-12T15:00:51+08:00">
<a class='notlink'>
<i class="fas fa-save" aria-hidden="true"></i>
<p>更新于：2020年3月12日</p>
</a>
</div>
<div class="new-meta-item meta-tags"><a class="tag" href="/tags/JS/" rel="nofollow"><i class="fas fa-hashtag" aria-hidden="true"></i><p>JS</p></a></div>
<div class="new-meta-item wordcount">
<a class='notlink'>
<i class="fas fa-keyboard" aria-hidden="true"></i>
<p>字数：676字</p>
</a>
</div>
<div class="new-meta-item readtime">
<a class='notlink'>
<i class="fas fa-hourglass-half" aria-hidden="true"></i>
<p>时长：2分钟</p>
</a>
</div>
<div class="new-meta-item share -mob-share-list">
<div class="-mob-share-list share-body">
<a class="-mob-share-qq" title="" rel="external nofollow noopener noreferrer"
href="http://connect.qq.com/widget/shareqq/index.html?url=https://crainyday.gitee.io/JS1-0.html&title=JS简介 - CRainyDay&pics=https://cdn.jsdelivr.net/gh/crainyday/blog@master/imgs/more/more01.png&summary=JavaScript简介"
>
<img src="https://cdn.jsdelivr.net/gh/crainyday/blog@master/lazyload.svg" data-original="https://cdn.jsdelivr.net/gh/xaoxuu/cdn-assets/logo/128/qq.png">
</a>
<a class="-mob-share-qzone" title="" rel="external nofollow noopener noreferrer"
href="https://sns.qzone.qq.com/cgi-bin/qzshare/cgi_qzshare_onekey?url=https://crainyday.gitee.io/JS1-0.html&title=JS简介 - CRainyDay&pics=https://cdn.jsdelivr.net/gh/crainyday/blog@master/imgs/more/more01.png&summary=JavaScript简介"
>
<img src="https://cdn.jsdelivr.net/gh/crainyday/blog@master/lazyload.svg" data-original="https://cdn.jsdelivr.net/gh/xaoxuu/cdn-assets/logo/128/qzone.png">
</a>
<a class="-mob-share-weibo" title="" rel="external nofollow noopener noreferrer"
href="http://service.weibo.com/share/share.php?url=https://crainyday.gitee.io/JS1-0.html&title=JS简介 - CRainyDay&pics=https://cdn.jsdelivr.net/gh/crainyday/blog@master/imgs/more/more01.png&summary=JavaScript简介"
>
<img src="https://cdn.jsdelivr.net/gh/crainyday/blog@master/lazyload.svg" data-original="https://cdn.jsdelivr.net/gh/xaoxuu/cdn-assets/logo/128/weibo.png">
</a>
<div class='hoverbox'>
<a><img src="https://cdn.jsdelivr.net/gh/crainyday/blog@master/lazyload.svg" data-original="https://cdn.jsdelivr.net/gh/xaoxuu/cdn-assets/logo/128/wechat.png"></a>
<div class='target'>
<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAPgAAAD4CAAAAADkunTXAAACSElEQVR42u3cQVLDMAwF0Nz/0nAAhom+5FKqPO9oOo6e2Qh9D9fXQ9cFDg4ODg6+CH41148Ni8/vPr9737RecHBwcHDwjfByA1D8flp49X3TesHBwcHBwTfDqw1EtaFIDyaFx/WCg4ODg4ODlxuKacNzanABDg4ODg4OXoen3ysHAuDg4ODg4ODnBvTNBmW6z9uTFHBwcHBw8H8Eb1+Ye9PPb7/ZCA4ODg4O/g/g09UdRJwKLOJ6wcHBwcHBF8G7DUJ3UJDue7w+cHBwcHDwRfC7wqZBfzdo6A4ayoECODg4ODj4IvipwCBtZKYDjPiiADg4ODg4+EJ4WsB0sBAX3BxYgIODg4ODPwHeHfCnDdD0oLsHAw4ODg4O/iT4dLCQXuirNkJ/FiiAg4ODg4N/ALz6olMBQtroHL8oAA4ODg4OvgjeBZ0aSEyDh3hfcHBwcHDwhfDuwCFdpy8MjAMFcHBwcHDwD4Z3A/1ugJAOKrqBQxwogIODg4ODfzC8WnA3UEgP7nSDBA4ODg4O/kT49CC6jc2p94ODg4ODg4PnF+VPP08HEb8+BwcHBwcHXwQ/9Yf/qUaoG2yUDwYcHBwcHHwRfBrEpwOJVwX/5QEHODg4ODj4QvirAv00WOjuX64fHBwcHBx8MXzaQEwHC+NBQ7eBAQcHBwcHB79SWLcx6QYY4ODg4ODg4K/7R7IpKA4+wMHBwcHBF8OnjcXdIKIbRKS/AHBwcHBw8CfBTzUY6edpAzK+qAAODg4ODr4I/rQFDg4ODg6+YH0D4gkBW0Y0Uw8AAAAASUVORK5CYII=">
</div>
</div>
</div>
</div>
</div>
</section>
<div class="prev-next">
<a class='prev' href='/JS1-1.html'>
<p class='title'><i class="fas fa-chevron-left" aria-hidden="true"></i>JS基础语法</p>
<p class='content'>JS基础语法
一.JS注释
和其他高级语言差不多, 分为:
多行注释: /**/
单行注释: //
注释中的代码不会被执行, 只能在源码中看见注释的内容
二.JS的变量与字面量
变量的作用...</p>
</a>
<a class='next' href='/JavaSE14-Internet.html'>
<p class='title'>JavaInternet<i class="fas fa-chevron-right" aria-hidden="true"></i></p>
<p class='content'>Java网络编程
一.网络编程概述
Java是 Internet 上的语言, 它从语言级上提供了对网络应用程序的支持, 程序员能够很容易开发常见的网络应用程序.
Java提供的网络类库, 可...</p>
</a>
</div>
</section>
</article>
<section class="widget related_posts shadow floatable desktop mobile">
<header>
<i class="fas fa-bookmark fa-fw" aria-hidden="true"></i><span class='name'>相关文章</span>
</header>
<div class="content">
<ul class="popular-posts"><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/JS_tools_01.html" title="JS中UTF-8与汉字互转" rel="bookmark">JS中UTF-8与汉字互转</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue3-1.html" title="JS数组函数" rel="bookmark">JS数组函数</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue1-1.html" title="Vue的计算属性与监视" rel="bookmark">Vue的计算属性与监视</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue1-0.html" title="Vue初识" rel="bookmark">Vue初识</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/JS-JSON.html" title="JS-JSON" rel="bookmark">JS-JSON</a></h3></div></li></ul>
</div>
</section>
<!-- 显示推荐文章和评论 -->
<article class="post white-box comments shadow floatable">
<section class="article typo">
<p ct><i class='fas fa-comments'></i> 评论</p>
<section id="comments">
<div id="valine_container" class="valine_thread">
<i class="fas fa-spinner fa-spin fa-fw"></i>
</div>
</section>
</section>
</article>
<!-- 根据页面mathjax变量决定是否加载MathJax数学公式js -->
<script>
window.subData = {
title: 'JS简介',
tools: true
}
</script>
</div>
<aside class='l_side'>
<section class="widget related_posts shadow floatable desktop mobile">
<header>
<i class="fas fa-bookmark fa-fw" aria-hidden="true"></i><span class='name'>相关文章</span>
</header>
<div class="content">
<ul class="popular-posts"><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/JS_tools_01.html" title="JS中UTF-8与汉字互转" rel="bookmark">JS中UTF-8与汉字互转</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue3-1.html" title="JS数组函数" rel="bookmark">JS数组函数</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue1-1.html" title="Vue的计算属性与监视" rel="bookmark">Vue的计算属性与监视</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/Vue1-0.html" title="Vue初识" rel="bookmark">Vue初识</a></h3></div></li><li class="popular-posts-item"><div class="popular-posts-title"><h3><a href="/JS-JSON.html" title="JS-JSON" rel="bookmark">JS-JSON</a></h3></div></li></ul>
</div>
</section>
<section class="widget grid shadow floatable desktop mobile">
<header>
<i class="fas fa-map-signs fa-fw" aria-hidden="true"></i><span class='name'>实用文档</span>
</header>
<div class='content'>
<div class="grid navigation fixed">
<a class="flat-box" title="/maven_05.html" href="/maven_05.html"
id="maven_05.html">
<i class="fas fa-file fa-fw" aria-hidden="true"></i>
Maven工程
</a>
<a class="flat-box" title="/Flask.html" href="/Flask.html"
id="Flask.html">
<i class="fas fa-file fa-fw" aria-hidden="true"></i>
Flask应用
</a>
<a class="flat-box" title="/Hexo.html" href="/Hexo.html"
id="Hexo.html">
<i class="fas fa-file fa-fw" aria-hidden="true"></i>
Gitee搭站
</a>
<a class="flat-box" title="/Ubuntu_006.html" href="/Ubuntu_006.html"
id="Ubuntu_006.html">
<i class="fas fa-file fa-fw" aria-hidden="true"></i>
v2ray
</a>
</div>
</div>
</section>
<section class="widget toc-wrapper shadow floatable desktop mobile">
<header>
<i class="fas fa-list fa-fw" aria-hidden="true"></i><span class='name'>本文目录</span>
</header>
<div class='content'>
<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#一-起源"><span class="toc-text">一.起源</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#二-JavaScript构成"><span class="toc-text">二.JavaScript构成</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#三-JS的特点"><span class="toc-text">三.JS的特点</span></a></li><li class="toc-item toc-level-2"><a class="toc-link" href="#四-JS的Hello-World"><span class="toc-text">四.JS的Hello World</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#A-JS代码的位置"><span class="toc-text">A.JS代码的位置</span></a></li></ol></li></ol>
</div>
</section>
</aside>
<footer class="clearfix ">
<br><br>
<div class="aplayer-container">
<meting-js
theme='#1BCDFC'
autoplay='false'
volume='0.7'
loop='all'
order='list'
fixed='true'
list-max-height='340px'
server='netease'
type='playlist'
id='2709912289'
list-folded='true'>
</meting-js>
</div>
<br>
<div class="social-wrapper">
<a href="mailto:[email protected]"
class="social fas fa-envelope flat-btn"
target="_blank"
rel="external nofollow noopener noreferrer">
</a>
<a href="https://github.com/crainyday"
class="social fab fa-github flat-btn"
target="_blank"
rel="external nofollow noopener noreferrer">
</a>
<a href="https://music.163.com/#/user/home?id=1794783182"
class="social fas fa-headphones-alt flat-btn"
target="_blank"
rel="external nofollow noopener noreferrer">
</a>
</div>
<div><p>博客内容遵循 <a href="https://creativecommons.org/licenses/by-nc-sa/4.0/deed.zh" target="_blank" rel="noopener">署名-非商业性使用-相同方式共享 4.0 国际 (CC BY-NC-SA 4.0) 协议</a></p>
</div>
<div id='sitetime'></div>
本站使用
<a href="https://volantis.js.org/" target="_blank" class="codename">Volantis</a>
作为主题