{"id":761,"date":"2016-08-16T14:04:48","date_gmt":"2016-08-16T06:04:48","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=761"},"modified":"2016-08-16T14:06:47","modified_gmt":"2016-08-16T06:06:47","slug":"javascript%e4%b8%ad%e5%8c%bf%e5%90%8d%e5%87%bd%e6%95%b0%e7%9a%84%e5%a4%9a%e7%a7%8d%e8%b0%83%e7%94%a8%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/javascript\/2016\/08\/16\/140448761.html","title":{"rendered":"Javascript\u4e2d\u533f\u540d\u51fd\u6570\u7684\u591a\u79cd\u8c03\u7528\u65b9\u5f0f"},"content":{"rendered":"<p>1\u3001Javascript\u4e2d\u5b9a\u4e49\u51fd\u6570\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u51fd\u6570\u76f4\u63a5\u91cf\u5c31\u662f\u5176\u4e2d\u4e00\u79cd\u3002\u5982var fun = function(){},\u8fd9\u91ccfunction\u5982\u679c\u4e0d\u8d4b\u503c\u7ed9fun\u90a3\u4e48\u5b83\u5c31\u662f\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u3002\u597d\uff0c\u770b\u770b\u533f\u540d\u51fd\u6570\u7684\u5982\u4f55\u88ab\u8c03\u7528\u3002<\/p>\n<p>\u65b9\u5f0f1\uff1a\u8c03\u7528\u51fd\u6570\uff0c\u5f97\u5230\u8fd4\u56de\u503c\u3002\u5f3a\u5236\u8fd0\u7b97\u7b26\u4f7f\u51fd\u6570\u8c03\u7528\u6267\u884c<\/p>\n<pre lang=\"javascript\" line=\"1\">(function(x,y){\n    alert(x+y);\n    return x+y;\n}(3,4));<\/pre>\n<p>\u65b9\u5f0f2\uff1a\u8c03\u7528\u51fd\u6570\uff0c\u5f97\u5230\u8fd4\u56de\u503c\u3002\u5f3a\u5236\u51fd\u6570\u76f4\u63a5\u91cf\u6267\u884c\u518d\u8fd4\u56de\u4e00\u4e2a\u5f15\u7528\uff0c\u5f15\u7528\u518d\u53bb\u8c03\u7528\u6267\u884c\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4e5f\u662f\u5f88\u591a\u5e93\u7231\u7528\u7684\u8c03\u7528\u65b9\u5f0f\uff0c\u5982jQuery\uff0cMootools\u3002<\/p>\n<pre lang=\"javascript\" line=\"1\">(function(x,y){\n    alert(x+y);\n    return x+y;\n})(3,4);<\/pre>\n<p>\u65b9\u5f0f3\uff1a\u4f7f\u7528void<\/p>\n<pre lang=\"javascript\" line=\"1\">void function(x) {\n      x = x-1;\n      alert(x);\n}(9);<\/pre>\n<p>\u65b9\u5f0f4\uff1a\u4f7f\u7528-\/+\u8fd0\u7b97\u7b26<!--more--><\/p>\n<pre lang=\"javascript\" line=\"1\">-function(x,y){\n    alert(x+y);\n    return x+y;\n}(3,4);\n \n+function(x,y){\n    alert(x+y);\n    return x+y;\n}(3,4);\n \n--function(x,y){\n    alert(x+y);\n    return x+y;\n}(3,4);\n \n++function(x,y){\n    alert(x+y);\n    return x+y;\n}(3,4);<\/pre>\n<p>\u65b9\u5f0f5\uff1a\u4f7f\u7528\u6ce2\u6d6a\u7b26(~)<\/p>\n<pre lang=\"javascript\" line=\"1\">~function(x, y) {\n    alert(x+y);\n   return x+y;\n}(3, 4);<\/pre>\n<p>\u65b9\u5f0f6\uff1a\u533f\u540d\u51fd\u6570\u6267\u884c\u653e\u5728\u4e2d\u62ec\u53f7\u5185<\/p>\n<pre lang=\"javascript\" line=\"1\">[function(){\n   console.log(this) \/\/ \u6d4f\u89c8\u5668\u5f97\u63a7\u5236\u53f0\u8f93\u51fawindow\n}(this)]<\/pre>\n<p>\u65b9\u5f0f7\uff1a\u533f\u540d\u51fd\u6570\u524d\u52a0typeof<\/p>\n<pre lang=\"javascript\" line=\"1\">typeof function(){\n   console.log(this) \/\/ \u6d4f\u89c8\u5668\u5f97\u63a7\u5236\u53f0\u8f93\u51fawindow\n}(this)<\/pre>\n<p>\u65b9\u5f0f8\uff1a\u533f\u540d\u51fd\u6570\u524d\u52a0delete<\/p>\n<pre lang=\"javascript\" line=\"1\">delete function(){\n   console.log(this) \/\/ \u6d4f\u89c8\u5668\u5f97\u63a7\u5236\u53f0\u8f93\u51fawindow\n}(this)<\/pre>\n<p>\u65b9\u5f0f9\uff1a\u533f\u540d\u51fd\u6570\u524d\u52a0void<\/p>\n<pre lang=\"javascript\" line=\"1\">void function(){\n   console.log(this) \/\/ \u6d4f\u89c8\u5668\u5f97\u63a7\u5236\u53f0\u8f93\u51fawindow\n}(this)<\/pre>\n<p>\u65b9\u5f0f10\uff1a\u4f7f\u7528new\u65b9\u5f0f\uff0c\u4f20\u53c2<\/p>\n<pre lang=\"javascript\" line=\"1\">new function(win){\n   console.log(win) \/\/ window\n}(this)<\/pre>\n<p>\u65b9\u5f0f11\uff1a\u4f7f\u7528new\uff0c\u4e0d\u4f20\u53c2<\/p>\n<pre lang=\"javascript\" line=\"1\">new function(){\n    console.log(this) \/\/ \u8fd9\u91cc\u7684this\u5c31\u4e0d\u662fwindow\u4e86\n}<\/pre>\n<p>\u65b9\u5f0f12\uff1a\u9017\u53f7\u8fd0\u7b97\u7b26<\/p>\n<pre lang=\"javascript\" line=\"1\">1, function(){\n    console.log(this) \/\/ window\n}();<\/pre>\n<p>\u65b9\u5f0f13\uff1a\u6309\u4f4d\u5f02\u6216\u8fd0\u7b97\u7b26<\/p>\n<pre lang=\"javascript\" line=\"1\">1^function(){\n    console.log(this) \/\/ window\n}();<\/pre>\n<p>\u65b9\u5f0f14\uff1a\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/p>\n<pre lang=\"javascript\" line=\"1\">1>function(){\n    console.log(this) \/\/ window\n}();<\/pre>\n<p>\u603b\u7ed3\u4e00\u4e0b\uff1a\u666e\u901a\u7684\u51fd\u6570\u8c03\u7528\u662f\u51fd\u6570\u540d\u540e\u9762\u8ddf\u53c2\u6570funname(p1,p2);\u7531\u4e8e\u533f\u540d\u51fd\u6570\u6ca1\u6709\u51fd\u6570\u540d\uff0c\u56e0\u6b64\u4ee5\u51fd\u6570\u4f53\u6765\u4ee3\u66ff\u51fd\u6570\u540d\uff0c\u53c2\u6570\u540c\u6837\u4ee5\u7279\u53f7\u5f62\u5f0f\u8ddf\u5728\u540e\u9762\uff0c\u672c\u8d28\u4e0a\u6ca1\u4ec0\u4e48\u533a\u522b\uff01<\/p>\n<p>\u53c2\u8003\u94fe\u63a5\uff1a<a href=\"http:\/\/www.cnblogs.com\/snandy\/archive\/2011\/02\/28\/1966664.html\" target=\"_blank\">http:\/\/www.cnblogs.com\/snandy\/archive\/2011\/02\/28\/1966664.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001Javascript\u4e2d\u5b9a\u4e49\u51fd\u6570\u7684\u65b9\u5f0f\u6709\u591a\u79cd\uff0c\u51fd\u6570\u76f4\u63a5\u91cf\u5c31\u662f\u5176\u4e2d\u4e00\u79cd\u3002\u5982var fun = function(){},\u8fd9\u91ccfunction\u5982\u679c\u4e0d\u8d4b\u503c\u7ed9fun\u90a3\u4e48\u5b83\u5c31\u662f\u4e00\u4e2a\u533f\u540d\u51fd\u6570\u3002\u597d\uff0c\u770b\u770b\u533f\u540d\u51fd\u6570\u7684\u5982\u4f55\u88ab\u8c03\u7528\u3002 \u65b9\u5f0f1\uff1a\u8c03\u7528\u51fd\u6570\uff0c\u5f97\u5230\u8fd4\u56de\u503c\u3002\u5f3a\u5236\u8fd0\u7b97\u7b26\u4f7f\u51fd\u6570\u8c03\u7528\u6267\u884c (function(x,y){ alert(x+y); return x+y; }(3,4)); \u65b9\u5f0f2\uff1a\u8c03\u7528\u51fd\u6570\uff0c\u5f97\u5230\u8fd4\u56de\u503c\u3002\u5f3a\u5236\u51fd\u6570\u76f4\u63a5\u91cf\u6267\u884c\u518d\u8fd4\u56de\u4e00\u4e2a\u5f15\u7528\uff0c\u5f15\u7528\u518d\u53bb\u8c03\u7528\u6267\u884c\uff0c\u8fd9\u79cd\u65b9\u5f0f\u4e5f\u662f\u5f88\u591a\u5e93\u7231\u7528\u7684\u8c03\u7528\u65b9\u5f0f\uff0c\u5982jQuery\uff0cMootools\u3002 (function(x,y){ alert(x+y); return x+y; })(3,4); \u65b9\u5f0f3\uff1a\u4f7f\u7528void void function(x) { x = x-1; alert(x); }(9); \u65b9\u5f0f4\uff1a\u4f7f\u7528-\/+\u8fd0\u7b97\u7b26<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28],"tags":[20],"class_list":["post-761","post","type-post","status-publish","format-standard","hentry","category-javascript","tag-basics"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/761","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=761"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/761\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=761"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=761"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=761"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}