Debugging - Web 前端程式開發實務

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Copyright © 2012 FITPI. All rights reserved. DPOTPMFMPH֥∱ಌề 9 ๏ ∱ềğ ❖ ۄ⃺ྟ֮đն؟⅂౦㣐׻ℳႨb ๏ ಌềğ ❖ *& ҂ᆦჱaമᇀ὜㸗ളấ↪b ❖ ҂൞ૄἠ⏟´ఖ׻ᆰࢤॖुb ✦ 'JSFGPY֤ν⊬'JSFCVHb ❖ 㢻Ḱم#MPDLᗥ⇟4DSJQU⊋ྛb ✦ ՎℭႨBMFSUࠧॖb ๏ →Ὂ҂ၞa⇔؟ਔّط၂ↀ⁙b ഈ䍛ᗥ҂∣ἐթᄝb

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Copyright © 2012 FITPI. All rights reserved. 12 ഍ັ℟ק၂༯Ćᆺुఃᇏ၂ἠଆ⊾֥⇫༏ YUI({ logInclude: { “#channel-player”: true } }).use() Y.log(“...”, “info”, “#channel- player”); Y.log(); :MPH .FTTBHF⇫༏ 4FWFSJUZ֩ά (SPVQ⊾⦁

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Copyright © 2012 FITPI. All rights reserved. :MPH֥∱ề 13 ๏ ∱ềğ ❖ ॖ၇4FWFSJUZ JOGP XBSO FSSPS ٳ đῘứ۽ऎॖᆰࢤቓGJMUFSb ❖ ॖሱị(SPVQa๩Ἶ:6*֥MPH*ODMVEF ࠇMPH&YDMVEF℟קቓٳ b ❖ ᄝ൐Ⴈ:6*֥భิ༯đૄἠ⏟´ఖ׻ॖၛ Ⴈđࠧ൐*&္҂὜Ⴕấ↪b ❖ ࠧ൐ᄝ䍛ഈὔ࣢đ္ॖ๩Ἶ:6*֥ EFCVHGBMTFϜMPHἬṅb

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Copyright © 2012 FITPI. All rights reserved. new Y.Console() 14 Ⴈ:6*㸗ള֥$POTPMFॖປಆᆦჱૄ၂ἠ⏟´ఖ Ớᧄ঺Έ⏟´ఖࠇห൹౦㣐 ళೆൔ༢ⅼ ӑݺႨ (new Y.Console()).render(); http://yuilibrary.com/yui/docs/console/ http://yuilibrary.com/yui/docs/console-filters/ ‣↮ğhttp://f2eclass.com/lab/debug/console.html

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Copyright © 2012 FITPI. All rights reserved. -PHྏ֤ٳཚ 15 ๏ ࡹ∗᾽ਈᾞӱൔ֥ૄἠݦൔֻ၂ྛaᇗေ⊋ྛ ề׻٢ᇂ-PHb රቀ䰏֥ۀ୑a⃸໡ⁿಸၞ ಀሔ䱝↜ⅳࠣਔࢳ᾵ἧb ๏ ằӱൔᇏླေնਈ֥-PHℭđ⃪၂קေᆷק 4FWFSJUZࠣ(SPVQṚ⅂đٚьᗥ⇟Ἶ⁓b ❖ :6*֥MPH*ODMVEF MPH&YDMVEF EFCVHݺႨĆ ๏ MPPQ ֥-PH FYၻ Ѭ٢Ά؇൙ࡱĎ⃪ሱ ྛᆆሠ൞ڎ൐Ⴈb

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Copyright © 2012 FITPI. All rights reserved. try-catch 18 try { // Մೳ။㗞ੜࡨޡతఔࣜᛰ } catch (error) { // ᙛ༗ࡨޡత࣌ީ࠽။ਐೖ // error తሱੑ༗ message ᢛ name alert("ࡨޡྨผҝɿ" + error.name + ", ࡨޡਜଉҝɿ" + error.message); } // ޙ᠃తఔࣜᛰနવՄҎ៺᠃ࣥߦʢআඇࡏ catch த returnʣ Їڭᄝॖି㸗ളấ↪֥ӱൔ⁫ຓ ჩߟࢿྉɿhttp://www.javascriptkit.com/javatutors/trycatch2.shtml ࿅शɿhttp://f2eclass.com/lab/debug/try-catch.html

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Copyright © 2012 FITPI. All rights reserved. window.onerror 19 window.onerror = function (message, url, line) { alert([ "JavaScript error: " + message, " on line " + line, " for " + url ].join("")); return false; // false ။៺᠃㗞ੜࡨޡɺtrue ଇ။ᆫ཈ࡨޡ }; ấ↪ẕ৘֥ቋᗥ၂֡ٝ䍛 ჩߟࢿྉɿhttp://dev.opera.com/articles/view/better-error-handling-with-window-onerror/ ࿅शɿhttp://f2eclass.com/lab/debug/window-onerror.html

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Copyright © 2012 FITPI. All rights reserved. ấ↪ẕ৘ྏ֤ٳཚ 20 ๏ ᾞấ↪ສഈ߭Ḹđх૧ᆺ൞USZDBUDI⇭ၝb ❖ UISPXOFX&SSPS ൐Ⴈᆀሱקấ↪ ๏ XJOEPXPOFSSPSẕ৘ğ ❖ 䍛ഈğ∟ҟấ↪a߭Ḹ֞යڛఖb ❖ Ῐứğ↾ൕấ↪aῘứದ≇с⇜ẕ৘וb ๏ ๷ᾑ๧႕ோğ ❖ IUUQXXXTMJEFTIBSFOFUO[BLBTFOUFSQSJTF KBWBTDSJQUFSSPSIBOEMJOHQSFTFOUBUJPO

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Copyright © 2012 FITPI. All rights reserved. 'JEEMFS4DSJQU ๏ ೖೆNJJJ$BTB#BS ๏ ҂๝Ῐứದ≇ὔ࣢్֥㍤ ๏ Ҭೆ'JSFCVH-JUFࠇ:6*$POTPMF֩ݺႨ۽ऎ ๏ ਙԛၘي∙aໃي∙֥ሳԱ ๏ ᾋℶଆ⊾⊷⇫ ๏ +BWB4DSJQU$44⇭⅜∻ڎ్֥㍤ 35 ൞'JEEMFSቋルն֥ۿିğॖၛሱị⇢Ẫ∻ۿି ၛ༯֥ۿି൞໡㬪NJJJ$BTB෮⚧ቔđॖᾳസ⇝؟Ῐứℭᾇ

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ეմɼᴍၷԼ။ग़ݱ alert ࢹᜬ ࡏ։ᚙ؀ڥଧೖࠑࢦྩब။ࣗಈ೺૬᮫䈕Ҋ։޷ 44

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Copyright © 2012 FITPI. All rights reserved. ‣↮ğೖೆ'JSFCVH-JUF 48 ๏ յῘ$VTUPN3VMFKT ề⇢3VMFT$VTUPN3VMFT ๏ ᄹࡆ⇢Ẫğ ᄝDMBTT)BOEMFS֥Ῐⅽࡆೆၛ༯ӱൔ⁫aթẵđࠧॖᄹࡆ⇢⇊ğ public static RulesOption("Enable Firebug Lite") var IS_INCLUDE_FIREBUG: boolean = false; ๏ ᄝ)5.-ᇏೖೆ+BWB4DSJQU ᅳ֞0O#FGPSF3FTQPOTF൙ࡱẕ৘ݦൔđᄝ᾵ඏభࡆೆ’᾵ᇏӱൔ ⁫ğIUUQGFDMBTTDPNMBCEFCVHGJEEMFSGJSFCVHUYU ๏ 'JEEMFS4DSJQUܲٚ໓ࡱğ IUUQXXXGJEEMFSDPN'JEEMFS%FW4DSJQU4BNQMFTBTQ