{"id":84970,"date":"2020-05-15T21:25:36","date_gmt":"2020-05-15T13:25:36","guid":{"rendered":"http:\/\/4563.org\/?p=84970"},"modified":"2020-05-15T21:25:36","modified_gmt":"2020-05-15T13:25:36","slug":"%e5%85%b3%e4%ba%8e%e9%97%ad%e5%8c%85%e7%9a%84%e4%b8%80%e4%b8%aa%e9%9d%a2%e8%af%95%e9%a2%98-%e8%bf%99%e6%98%af%e4%b8%ba%e4%bb%80%e4%b9%88%e5%95%8a","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=84970","title":{"rendered":"\u5173\u4e8e\u95ed\u5305\u7684\u4e00\u4e2a\u9762\u8bd5\u9898, \u8fd9\u662f\u4e3a\u4ec0\u4e48\u554a"},"content":{"rendered":"
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\u5173\u4e8e\u95ed\u5305\u7684\u4e00\u4e2a\u9762\u8bd5\u9898, \u8fd9\u662f\u4e3a\u4ec0\u4e48\u554a <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : lukeshawn <\/span> <\/i> 11<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

function fun(n,o){ console.log(o); return { fun: function(m){ return fun(m,n); } }; }<\/p>\n

var a = fun(0); \/\/ undefined , \u8fd9\u4e2a\u6211\u7406\u89e3 a.fun(1); \/\/ 0, \u8fd9\u662f\u4e3a\u4ec0\u4e48\u554a<\/p>\n

\u4e3a\u4ec0\u4e48 a.fun(1)\u662f 0 \u554a<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (7<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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  • \n
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    \u8cc7\u6df1\u5927\u4f6c : yesterdaysun <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u56e0\u4e3a\u6700\u5f00\u59cb\u7a7f\u8fdb\u53bb\u7684 0, \u4f5c\u4e3a n, \u5728 a.fun \u7684\u8c03\u7528\u4e2d, \u53c8\u88ab\u4f20\u5230\u5916\u9762\u7684 fun \u4f5c\u4e3a o \u4e86 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : shintendo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    a = fun(0) \/\/ a == {fun: function(m) {return fun(m,0)}}
    \u8fd9\u6837\u770b\u80fd\u7406\u89e3\u5417\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : lukeshawn <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @yesterdaysun \u542c\u4e0d\u61c2 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : lukeshawn <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @shintendo \u4e0d\u7406\u89e3,\u6709\u66f4\u5c0f\u767d\u7684\u89e3\u91ca\u4e48 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : rming <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    https:\/\/www.ruanyifeng.com\/blog\/2009\/08\/learning_javascript_closures.html<\/p>\n

    https:\/\/pic.downk.cc\/item\/5eb37ee8c2a9a83be5e7d2e8.jpg <\/p><\/div>\n<\/p><\/div>\n<\/li>\n

  • \n
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    \u8cc7\u6df1\u5927\u4f6c : shintendo <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @lukeshawn \uff1f\uff1f\u4e0d\u7406\u89e3\u5728\u54ea\u91cc
    1. fun(n)\u7684\u8fd4\u56de\u503c\u662f{ fun: function(m){ return fun(m,n); } }
    2. \u6240\u4ee5 fun(10086)\u7684\u8fd4\u56de\u503c\u662f{ fun: function(m){ return fun(m,10086); } }
    3. \u540c\u7406 fun(0)\u7684\u8fd4\u56de\u503c\u662f{ fun: function(m){ return fun(m,0); } }
    4. a = fun(0)\uff0c\u6240\u4ee5 a = { fun: function(m){ return fun(m,0); } }
    \u54ea\u6b65\u4e0d\u7406\u89e3\uff1f\uff1f <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u8cc7\u6df1\u5927\u4f6c : MisakaTang <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    console.log(o) \u6253\u5370\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570
    var a = fun(0); \u4f7f\u5f97\u51fd\u6570\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u53d8\u6210\u4e86 0
    a.fun() \u4e0d\u7ba1\u4f20\u4ec0\u4e48\u90fd\u662f\u6253\u5370 0
    \u7b80\u5355\u7406\u89e3\u5c31\u662f var a = fun(0) \u628a fun(n,o)\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u6301\u4e45\u5316\u4e86 \u540e\u9762\u8c03\u7528 a.fun(n) \u7b49\u4ef7\u4e8e\u8c03\u7528 fun(n,0)
    \u8fd9\u6837\u89e3\u91ca? <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u5173\u4e8e\u95ed\u5305\u7684\u4e00\u4e2a\u9762\u8bd5\u9898, \u8fd9\u662f\u4e3a\u4ec0\u4e48…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84970"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=84970"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/84970\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=84970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=84970"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=84970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}