{"id":140147,"date":"2020-07-20T11:18:00","date_gmt":"2020-07-20T03:18:00","guid":{"rendered":"http:\/\/4563.org\/?p=140147"},"modified":"2020-07-20T11:18:00","modified_gmt":"2020-07-20T03:18:00","slug":"%e5%95%8a%ef%bc%9f%e8%bf%99","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=140147","title":{"rendered":"\u554a\uff1f\u8fd9\u2026\u2026"},"content":{"rendered":"
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\u554a\uff1f\u8fd9\u2026\u2026 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : pabupa <\/span> <\/i> 9<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\"    \" instanceof String; \/\/ False !!!!!!!!!!!!!! <\/code><\/pre>\n
\u4f60\u5185\u90e8\u600e\u4e48\u5b9e\u73b0\u7684\uff0c\u8ddf\u6211\u6709\u793e\u4e48\u5173\u7cfb\u5440\uff1f\u4f60\u4e0d\u80fd\u8ba9\u4ed6\u4fdd\u6301\u4e00\u81f4\u5417\uff1f\uff01<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (68<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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     \u8cc7\u6df1\u5927\u4f6c : GM <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u4e0d\u80fd\u3002<\/p>\n
    \u7231\u7528\u4e0d\u7528\uff0c\u4e0d\u7528\u5c31\u6eda~~~~~                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Touchevent <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u66b4\u8e81\u8001\u54e5\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : wellsc <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 Js \u4e09\u5143\u4e00\u4f53.jpg                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : DoodleSit <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 typeof \u4e0d\u9999\u5417~~
    instanceof \u4ee3\u8868\u662f\u5b9e\u4f8b\u7684\u610f\u601d\uff0c\u524d\u63d0\u662f\u8981\u5b9e\u4f8b\u5316\uff08 new \uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : yongjing <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 RTFM instanceof \u53ea\u6821\u9a8c\u5bf9\u8c61                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : pabupa <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @GM \uff1f\uff1f\uff1f\uff1f\uff1f\uff1f\uff1f\uff1f\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : pabupa <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @yongjing 
    @DoodleSit <\/p>\n
    https:\/\/developer.mozilla.org\/zh-CN\/docs\/Web\/JavaScript\/Reference\/Operators\/Object_initializer<\/p>\n
    “\u53ef\u4ee5\u901a\u8fc7 new Object()\uff0cObject.create()\u65b9\u6cd5\uff0c\u6216\u8005******\u4f7f\u7528\u5b57\u9762\u91cf\u6807\u8bb0\uff08\u521d\u59cb\u5316\u6807\u8bb0\uff09\u521d\u59cb\u5316\u5bf9\u8c61******\u3002”                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : ViggoSite <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 typeof \u4e0d\u9999\u5417~~                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : pabupa <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ViggoSite typeof \u8fd4\u56de\u7684\u662f\u5b57\u7b26\u4e32\uff0c\u8fd8\u9700\u8981\u518d\u6bd4\u8f83\u4e00\u6b21\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : MintZX <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u6ca1\u7406\u89e3\uff0c\u8fd9\u6709\u4ec0\u4e48\u95ee\u9898\uff1f<\/p>\n
    \u524d\u8005\u662f\u6a21\u7248\u5b57\u7b26\uff0c\u540e\u8005\u662f\u5bf9\u8c61\u3002\u5f53\u7136\u4e0d\u662f\u4e00\u4e2a\u4e1c\u897f\u3002<\/p>\n
    python \u548c ruby \u662f\u4e00\u4e2a\u7c7b\u90a3\u5c31\u662f True\uff0cjs \u4e0d\u662f\u4e00\u4e2a\u7c7b\u90a3\u5c31\u4e0d\u662f true \u3002\u4f60\u60f3\u6bd4\u8f83\u7684\u8bdd\u7528 new String()\u597d\u4e86\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : morethansean <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ViggoSite \u4f60\u5f15\u7528\u7684\u8fd9\u7bc7\u6587\u7ae0\u91cc\u4e0d\u662f\u5199\u4e86\u561b\uff0c “`An object initializer is a comma-delimited list of zero or more pairs of property names and associated values of an object, enclosed in curly braces ({}).“` string literal \u5e76\u4e0d\u662f object, instanceof \u4f1a\u8fd4\u56de false.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : ViggoSite <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @pabupa \u90a3….\u6709\u5565\u95ee\u9898\u5417\uff1f<\/p>\n
    typeof ” ” == “string”                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : ViggoSite <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @morethansean @\u9519\u4e86\uff08\u2299\uff3f\u2299\uff1b\uff09\u2026                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : jinliming2 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 String \u662f\u7c7b\uff0c\u4f60\u53ef\u4ee5 new String
    “” \u662f string\uff0c\u57fa\u672c\u6570\u636e\u7c7b\u578b\u4e4b\u4e00\uff0c\u4e0d\u662f object
    \u65e2\u7136\u8fde object \u90fd\u4e0d\u662f\uff0c\u600e\u4e48\u53ef\u80fd instanceof \uff1f
    “” !== new String(“”)\uff0c\u56e0\u4e3a\u6570\u636e\u7c7b\u578b\u4e0d\u4e00\u6837\uff0c\u4e00\u4e2a\u662f string\uff0c\u4e00\u4e2a\u662f object \u3002<\/p>\n
    \u987a\u4fbf\uff0c@pabupa #7\uff0c\u4f60\u80fd\u628a\u90a3\u4e00\u6bb5\u590d\u5236\u5b8c\u5417\uff1f
    \u53ef\u4ee5\u901a\u8fc7 new Object()\uff0cObject.create()\u65b9\u6cd5\uff0c\u6216\u8005\u4f7f\u7528\u5b57\u9762\u91cf\u6807\u8bb0**\uff08\u521d\u59cb\u5316\u6807\u8bb0\uff09**\u521d\u59cb\u5316\u5bf9\u8c61\u3002 **\u4e00\u4e2a\u5bf9\u8c61\u521d\u59cb\u5316\u5668\uff0c\u7531\u82b1\u62ec\u53f7 \/\u5927\u62ec\u53f7 ({}) \u5305\u542b\u7684\u4e00\u4e2a\u7531\u96f6\u4e2a\u6216\u591a\u4e2a\u5bf9\u8c61\u5c5e\u6027\u540d\u548c\u5176\u5173\u8054\u503c\u7ec4\u6210\u7684\u4e00\u4e2a\u9017\u53f7\u5206\u9694\u7684\u5217\u8868\u6784\u6210**\u3002
    \u6240\u4ee5\uff0c\u53ea\u6709 {} \u51fa\u6765\u7684\u624d\u662f\u5bf9\u8c61\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : hirasawayui <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 new String(” are you ok? “) instanceof String \/\/ true                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : HiCode <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 [] == []<\/p>\n
    false                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : pigmen <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u4e2a\u771f\u4e0d\u602a js\uff0c\u662f\u4f60\u7528\u9519\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : watanuki <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u641c\u7d22 wtfjs \u6709\u60ca\u559c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : yujiff <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u7231 V2\uff0c\u9ad8\u4eba\u591a\u4e14\u76f4\u63a5\u3001\u70ed\u5fc3\uff01                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : zhengjian <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 new String(” “) instanceof String;                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : yanguango <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8be6\u7ec6\u89e3\u91ca\u770b https:\/\/developer.mozilla.org\/en-US\/docs\/Web\/JavaScript\/Reference\/Operators\/instanceof                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Mutoo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u53ef\u4ee5\u81ea\u5df1\u5199\u4e00\u4e2a instanceOf \u6765\u5224\u65ad: \u539f\u7406\u662f\u8ffd\u8e2a\u5bf9\u8c61\u7684 __proto__ \u94fe\uff0c\u80fd\u5426\u627e\u5230\u76ee\u6807\u7684\u539f\u578b\u3002<\/p>\n
    ” “.__proto__ === String.prototype \/\/ true;                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Mutoo <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Mutoo \u968f\u624b\u5199\u4e86\u4e00\u4e2a\u7248\u672c https:\/\/gist.github.com\/mutoo\/dca6326a8928b35eff4d57983a726b94