{"id":1531,"date":"2007-02-19T02:25:46","date_gmt":"2007-02-18T18:25:46","guid":{"rendered":"http:\/\/ihower.idv.tw\/blog\/archives\/1531"},"modified":"2015-09-05T11:00:15","modified_gmt":"2015-09-05T03:00:15","slug":"ppk-on-javascript","status":"publish","type":"post","link":"https:\/\/ihower.tw\/blog\/1531-ppk-on-javascript","title":{"rendered":"ppk on JavaScript"},"content":{"rendered":"<p><a href=\"http:\/\/www.quirksmode.org\/book\/\"><img decoding=\"async\" src=\"http:\/\/tlsj.tenlong.com.tw\/WebModule\/BookSearch\/cover\/E10\/0321423305.jpg\" style=\"float: left; margin: 5px; width: 160px; padding: 5px\" \/><\/a>\u9019\u662f\u4e00\u672c JavaScript \u50b3\u5947\uff0c\u4f5c\u8005\u672c\u8eab\u5c31\u975e\u5e38\u6709\u610f\u601d\uff0c\u807d <a href=\"http:\/\/lukhnos.org\/blog\/zh\/\">lukhnos <\/a>\u8aaa\u624d\u77e5\u9053\u4ed6\u4ee5\u524d<a href=\"http:\/\/www.quirksmode.org\/about\/cv.html\">\u4e3b\u4fee\u6b77\u53f2<\/a> :p \u4ed6\u7684 <a href=\"http:\/\/www.quirksmode.org\">quirksmode<\/a> \u6709\u975e\u5e38\u8c50\u5bcc\u7684 Web Design \u8cc7\u6e90\uff0c\u5c31\u50cf\u6b77\u53f2\u5e74\u4ee3\u822c\u4e00\u6a23\u8a73\u7d30\u7684\u5217\u51fa\u5404\u5bb6\u700f\u89bd\u5668\u652f\u63f4\u7684\u7a0b\u5ea6\uff0c\u662f\u516c\u8a8d\u7684 JavaScript \u5c08\u5bb6\u3002\u6211\u5011\u77e5\u9053 JavaScript \u7b97\u662f\u500b\u883b dirty \u7684\u8a9e\u8a00\uff0c\u80cc\u8ca0\u8457\u6b77\u53f2\u5305\u88b1\u53ca\u5404\u5bb6\u700f\u89bd\u5668\u4e0d\u540c\u7684\u5be6\u4f5c\u6b67\u7570\uff0c\u52a0\u4e0a\u8fd1\u5e74\u4f86\u7684 Web Standards\u3001Usability \u8ddf Accessibility \u7b49\u8b70\u984c\u53c8\u589e\u52a0\u4e86\u5f88\u591a\u7d30\u7bc0\u3002\u9019\u672c\u66f8\u900f\u904e\u516b\u500b\u5b8c\u6574\u7684\u771f\u5be6 project\u8cab\u7a7f\u672c\u66f8\u4f86\u505a\u7bc4\u4f8b\u8b1b\u89e3\uff0c\u5f88\u9069\u5408\u5538\u5b8c\u4e56\u4e56\u7684 <a href=\"\/blog\/archives\/1484\">DOM Scripting <\/a>\u4e4b\u5f8c\uff0c\u7e7c\u7e8c\u6df1\u5165\u4e86\u89e3 JavaScript \u4ee5\u700f\u89bd\u5668\u8b70\u984c\u3002<\/p>\n<p>\u76f8\u95dc\u66f8\u8a55<\/p>\n<ul>\n<li><a href=\"http:\/\/www.456bereastreet.com\/archive\/200611\/ppk_on_javascript_book_review\/\">ppk on JavaScript (Book review)<\/a><\/li>\n<li><a href=\"http:\/\/www.digital-web.com\/articles\/ppk_on_javascript\/\">Digital Web Magazine &#8211; ppk on JavaScript <\/a><\/li>\n<\/ul>\n<p>\u524d\u5169\u7ae0 Purpose \u8ddf Context\u00a0\u975e\u5e38\u975e\u5e38\u7cbe\u91c7\uff0c\u4f5c\u8005\u5c31\u50cf\u8aaa\u6545\u4e8b\u4e00\u6a23\u5a13\u5a13\u9053\u4f86\uff0c\u5168\u8c8c\u6027\u628a JavaScript \u7684\u4f86\u9f8d\u53bb\u8108\u8b1b\u4e86\u4e00\u904d\uff0cRealazy\u6709\u505a\u4e86\u66f8\u6458( <a href=\"http:\/\/realazy.org\/blog\/2006\/11\/19\/ppk-on-javascript-study-note-part01\/\">JavaScript\u7684\u76ee\u7684<\/a>\u3001<a href=\"http:\/\/realazy.org\/blog\/2006\/12\/21\/ppk-on-javascript-study-note-part02-1\/\">\u80cc\u666f\u4e00<\/a>\u3001<a href=\"http:\/\/realazy.org\/blog\/2006\/12\/27\/ppk-on-javascript-study-note-part02-2\/\">\u80cc\u666f\u4e8c<\/a>\u3001<a href=\"http:\/\/realazy.org\/blog\/2007\/01\/01\/ppk-on-javascript-study-note-part02-3\/\">\u80cc\u666f\u4e09<\/a> )\uff0c\u6211\u5c31\u4e0d\u591a\u8a73\u8ff0\u4e86\u3002<\/p>\n<p><!--more-->\u7b2c\u4e09\u7ae0 Browsers \u700f\u89bd\u5668\u8b70\u984c\u3002\u5404\u5bb6\u700f\u89bd\u5668\u4ecb\u7d39\uff0c\u4ee5\u53ca\u5e38\u898b\u7684\u700f\u89bd\u5668\u554f\u984c 1.\u700f\u89bd\u5668\u4e0d\u652f\u63f4\u67d0\u4e9bJavaScript\u529f\u80fd 2.\u5408\u6cd5\u7684\u898f\u683c\u89e3\u91cb\u5dee\u7570\uff0c\u4f46\u6b64\u7a2e\u60c5\u6cc1\u8f03\u5c11 3.\u700f\u89bd\u5668\u6545\u610f\u6709\u6240\u5dee\u7570\uff0c\u4f8b\u5982 IE\u7528 srcElement \u800c\u5176\u4ed6\u7b26\u5408\u6a19\u6e96\u7684\u7528 target\uff0c\u4f46\u901a\u5e38\u53ea\u662f\u540d\u5b57\u4e0d\u540c\u800c\u5df2\uff0c\u5f88\u5bb9\u6613\u8655\u7406 4.\u700f\u89bd\u5668bug<\/p>\n<p>\u4f5c\u8005\u82b1\u5f88\u591a\u7bc7\u5e45\u5f37\u8abf\u8655\u7406\u700f\u89bd\u5668\u554f\u984c\u7684\u6700\u597d\u65b9\u6cd5\u5c31\u662f object detection\uff0c\u800c\u5343\u842c\u4e0d\u8981\u7528 browser detection\u3002\u4f8b\u5982\u4ed6\u6700\u5f97\u610f\u7684 DOM \u652f\u63f4\u6aa2\u67e5 :<\/p>\n<blockquote><p>var W3CDOM = document.createElement &amp;&amp; document.getElementsByTagName;\u00a0<\/p><\/blockquote>\n<p>\u6700\u5f8c\u4ecb\u7d39\u4e00\u4e9b\u7c21\u55ae\u7684 debug \u65b9\u6cd5: alert,confirm,error console \u7b49<\/p>\n<p>\u7b2c\u56db\u7ae0 Preparation\uff0c\u5373\u6b63\u5f0fcoding\u524d\u7684\u6e96\u5099\u5de5\u4f5c\u3002\u5148\u5f37\u8abf HTML \u8ddf CSS \u7d50\u69cb\u7684\u91cd\u8981\u3001\u4e09\u7a2e Hooks \u65b9\u5f0f 1.ID 2. class 3.Custom attributes\uff0c\u5176\u4e2d\u9700\u8981\u7279\u5225\u6ce8\u610f\u7684\u662f\u5ba2\u88fd\u5c6c\u6027\u6c92\u6709\u8fa6\u6cd5\u901a\u904e valid (X)HTML \u6e2c\u9a57\uff0c\u4f8b\u5982\u4f5c\u8005\u8a8d\u70ba\u5beb\u6210 class=&#8221;validation=required numeric&#8221; \u7a0b\u5f0f\u4e0d\u597d\u5beb\uff0c\u800c\u82e5\u53ea\u662f\u5beb class=&#8221;required numeric&#8221; \u5247\u6c92\u6709\u8a9e\u7fa9\uff0c\u6240\u4ee5\u4f5c\u8005\u5be7\u9858\u5beb\u6210 validation=&#8221;required numeric&#8221;\u3002\u9019\u500b\u8b70\u984c\u53ef\u4ee5\u53c3\u8003\u4f5c\u8005\u7684\u9019\u7bc7 <a href=\"http:\/\/www.alistapart.com\/articles\/scripttriggers\/\">JavaScript Triggers<\/a>\u3002<\/p>\n<p>\u63a5\u8457\u4ecb\u7d39 initialization function \u7684\u5e38\u898b\u4efb\u52d9\u8ddf\u8f09\u5165 JavaScript \u7684\u554f\u984c\u3002\u6709 1.\u8a2d\u5b9a event handlers 2.\u6c7a\u5b9a vistor \u72c0\u614b\uff0c\u5982 cookies 3. \u8a2d\u5b9a\u6703\u5b58\u53d6\u7684\u8cc7\u6e90 4.\u7522\u751fHTML\u5167\u5bb9\uff0c\u4f8b\u5982\u57fa\u65bc accessibility \u7684\u8003\u91cf\uff0c\u5982\u679c\u6709\u67d0\u4e9b\u5167\u5bb9\u4e0d\u80fd\u6c92\u6709 JavaScript \u652f\u63f4\uff0c\u90a3\u4e00\u958b\u59cb\u5c31\u61c9\u8a72\u7528 JavaScript\u4f86\u7522\u751f 5.\u5efa\u7acb\u65b9\u4fbf\u5b58\u53d6\u7684\u95dc\u806f\u8b8a\u6578 6.\u4fee\u6539\u6587\u4ef6\u7d50\u69cb\uff0c\u4f8b\u5982\u70ba\u4e86 usability \u66ab\u6642\u62ff\u6389\u67d0\u4e9b\u5167\u5bb9\u3002<\/p>\n<p>\u7136\u5f8c\u662f include JavaScript \u7684\u7528\u6cd5\uff0c\u6700\u5f8c\u63a2\u8a0e initialization \u7684\u8f09\u5165\u554f\u984c\uff0c\u6211\u5011\u77e5\u9053\u4e0b\u8f09HTML\u6642\u662f\u4f9d\u5e8f\u8f09\u5165\u57f7\u884c\uff0c\u6240\u4ee5include\u00a0JavaScript \u6642\uff0cHTML\u9801\u9762\u9084\u6c92\u8f09\u5165\uff0c\u9019\u6703\u8b93DOM\u767c\u751f\u932f\u8aa4\uff0c\u6240\u4ee5\u5f97\u7528 window.onload \u7684 event \u4f86\u8655\u7406\uff0c\u9032\u800c\u4f7f\u7528 addEventSimple()\/removeEventsimple() \u4e4b\u985e\u7684\u6a5f\u5236\u3002\u53e6\u5916\u4e00\u500b\u5e38\u898b\u554f\u984c\u5c31\u662f\u7db2\u9801 image\u5f88\u591a\u7684\u6642\u5019\uff0c\u8f09\u5165\u592a\u4e45\u9020\u6210 load event\u6703 delay \u592a\u4e45\uff0c\u800c\u6b64\u6642\u4f7f\u7528\u8005\u8d95\u8457\u9ede\u9084\u6c92\u6709 initialization \u7684\u9801\u9762(\u4f8b\u5982\u9084\u6c92\u8a2d\u5b9aonclick event) \u5c31\u7cdf\u5566\u3002<\/p>\n<p>\u7b2c\u4e94\u7ae0\u00a0 JavaScript Core\uff0c\u5373ECMAScript\u3002\u6ce8\u610f\u5230 Javascript \u6709\u5f88\u591a\u90e8\u5206\u9084\u662f\u7531W3C\u4f86\u6a19\u6e96\u3002\u9019\u7ae0\u53c8\u56de\u982d\u5f9e hello world \u958b\u59cb\u8b1b syntax,data type,control structures,function,object\u3002\u55ef\uff0c\u611f\u89ba\u5f88\u591a\u8b1b\u7684\u592a\u57fa\u672c\u56c9\uff0c\u6703\u5538\u9019\u672c\u66f8\u7684\u4eba\u61c9\u8a72\u90fd\u6709\u7a0b\u5f0f\u8a2d\u8a08\u7d93\u9a57\u4e86\u5427\uff0c\u800c\u6709\u4e9b\u7279\u5225\u7684\u6771\u897f\u56e0\u70ba\u7121\u95dc Core \u6240\u4ee5\u53ea\u80fd\u9ede\u5230\u70ba\u6b62(\u4f8b\u5982 event propagation, W3C DOM nodeList\u4e0d\u7b97\u662farray)\uff0c\u8a73\u7d30\u5247\u9700\u8981\u5ef6\u5230\u5f8c\u9762\u7ae0\u7bc0\u3002<\/p>\n<p>\u6709\u8da3\u7684\u662f\u6211\u73fe\u5728\u624d\u77e5\u9053 JavaScript \u7684 object \u53ef\u4ee5\u770b\u6210 associative arrays \u4f86\u4f7f\u7528\uff0c\u5373 dot notation \u53ef\u4ee5\u6539\u7528 square bracket \u4f86\u4f7f\u7528\uff0c\u4f8b\u5982 object.property \u8ddf object[&#8216;property&#8217;] \u662f\u4e00\u6a23\u7684\u3001object.method() \u8ddf object<a href=\"\">&#8216;method&#8217;<\/a> \u4e5f\u662f\u4e00\u6a23\uff0c\u800c\u7528 array \u7684\u597d\u8655\u662f\u53ef\u4ee5\u5f48\u6027\u9078\u64c7\u8981\u57f7\u884c\u7684 function (\u628a square bracket\u88e1\u6539\u6210\u7528\u8b8a\u6578)\u3002<\/p>\n<p>\u7b2c\u516d\u7ae0\u5247\u662f\u8ddf\u700f\u89bd\u5668\u76f8\u95dc\u7684 object\uff0c\u7d71\u7a31 Browser Object Model\uff0c\u9019\u90e8\u4efd\u593e\u5728 Core \u8ddf DOM \u4e4b\u9593\uff0c\u53ea\u6709 de facto Netscape 3 standard\uff0c\u800c\u6c92\u6709\u6b63\u5f0f\u6a19\u6e96\u3002\u4e3b\u8981\u7684\u6771\u897f\u662f (global)\u00a0window object\uff0c\u63a2\u8a0e\u00a0Cross-window communication: \u5982\u4f55\u8655\u7406 window.open \u65b0\u958b\u7684\u8996\u7a97\u8ddf\u539f\u8996\u7a97\u00a0opener\u3002\u53e6\u5916\u5c31\u662f Cookie, Location,History, document object&#8230;&#8230;\u7b49\u65e2\u4e0d\u662fDOM\u53c8\u4e0d\u662fCore\u7684\u6771\u897f\u3002<\/p>\n<p>(\u5f85\u7e8c\uff0c\u6700\u5f8c\u7684\u56db\u7ae0\u66f4\u6df1\u5165\u6280\u8853\u8b70\u984c\uff0c\u5305\u62ecEvents,DOM,CSS\u8ddfAjax)<\/p>\n<p>\u8a71\u8aaa\u6700\u8fd1\u958b\u59cb\u6539\u5538 JavaScript\u4e86\uff0cRuby&amp;Rails \u53c8\u53ea\u597d\u5148\u653e\u8457\u56c9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9019\u662f\u4e00\u672c JavaScript \u50b3\u5947\uff0c\u4f5c\u8005\u672c\u8eab\u5c31\u975e\u5e38\u6709\u610f\u601d\uff0c\u807d lukhnos \u8aaa\u624d\u77e5\u9053\u4ed6\u4ee5\u524d\u4e3b\u4fee\u6b77\u53f2 :p  &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/ihower.tw\/blog\/1531-ppk-on-javascript\" class=\"more-link\">\u95b1\u8b80\u5168\u6587<span class=\"screen-reader-text\">\u3008ppk on JavaScript\u3009<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[9,33,5,4],"tags":[],"class_list":["post-1531","post","type-post","status-publish","format-standard","hentry","category-books","category-javascript","category-programming","category-web-design","entry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1q6tG-oH","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/comments?post=1531"}],"version-history":[{"count":1,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1531\/revisions"}],"predecessor-version":[{"id":8344,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/posts\/1531\/revisions\/8344"}],"wp:attachment":[{"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/media?parent=1531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/categories?post=1531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ihower.tw\/blog\/wp-json\/wp\/v2\/tags?post=1531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}