{"id":418742,"date":"2021-03-14T12:08:10","date_gmt":"2021-03-14T04:08:10","guid":{"rendered":"http:\/\/4563.org\/?p=418742"},"modified":"2021-04-01T16:16:35","modified_gmt":"2021-04-01T08:16:35","slug":"nodejs-%e9%87%8c-%e4%b8%ba%e5%95%a5-array-%e6%98%af%e5%90%a6%e4%bd%bf%e7%94%a8-new-%e9%83%bd%e5%8f%af%e4%bb%a5%e8%a2%ab%e6%9e%84%e9%80%a0","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=418742","title":{"rendered":"nodejs \u91cc, \u4e3a\u5565 Array \u662f\u5426\u4f7f\u7528 new \u90fd\u53ef\u4ee5\u88ab\u6784\u9020"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  nodejs \u91cc, \u4e3a\u5565 Array \u662f\u5426\u4f7f\u7528 new \u90fd\u53ef\u4ee5\u88ab\u6784\u9020               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : DinoStray <\/span>  <span><i><\/i> 1<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<pre><code>var a = Array() var a = new Array() <\/code><\/pre>\n<p>\u8fd9\u4e24\u884c\u4ee3\u7801\u90fd\u53ef\u4ee5\u6784\u9020\u4e00\u4e2a Array, \u6709\u5565\u533a\u522b? \u4e3a\u5565 class \u4e00\u5b9a\u8981\u6709 new \u624d\u80fd\u6784\u9020, Array \u5374\u4e0d\u9700\u8981? Array \u548c\u81ea\u5b9a\u4e49\u7684 class \u6709\u5565\u533a\u522b<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>5<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"5581335\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : wunonglin <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             var a = []<br \/>\u8fd9\u6837\u4e5f\u53ef\u4ee5 <img decoding=\"async\" src=\"http:\/\/4563.org\/wp-content\/uploads\/2021\/04\/504J5BO2-1.png\" alt=\"nodejs \u91cc, \u4e3a\u5565 Array \u662f\u5426\u4f7f\u7528 new \u90fd\u53ef\u4ee5\u88ab\u6784\u9020\"> <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5581336\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : yanghanlin <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             https:\/\/javascript.info\/constructor-new#constructor-mode-test-new-target                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5581337\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u4e3b<\/span> <span>\u8cc7\u6df1\u5927\u4f6c : DinoStray <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             @yanghanlin \u8c22\u8c22, \u8fd9\u4e2a\u7f51\u7ad9\u662f\u6211\u770b\u8fc7\u7684\u6700\u597d\u7684 js \u6559\u7a0b\u4e86, \u6211\u4f1a\u597d\u597d\u5b66\u4e60\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5581338\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : autoxbc <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4e0a\u9762\u7684\u7f51\u7ad9\u6709\u4e2d\u6587\u7248<br \/>https:\/\/zh.javascript.info\/constructor-new                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"5581339\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : warjiang <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             var a = Array() \u662f\u51fd\u6570\u8c03\u7528;<\/p>\n<p>var a = new Array() \u5206\u4e09\u6b65<br \/>1. \u521b\u5efa\u5bf9\u8c61 obj<br \/>2. Array.call(obj),\u5728 obj \u4e0a\u4e0b\u6587\u6267\u884c Array,\u5c06\u8fd4\u56de\u7ed3\u679c\u8bb0\u4e3a ret<br \/>3. \u5982\u679c ret \u4e3a\u7a7a\uff0c\u5219\u7528 obj \u4f5c\u4e3a\u8fd4\u56de\u503c\uff0c\u5982\u679c ret \u4e0d\u4e3a\u7a7a\uff0c\u5219\u7528 ret \u4f5c\u4e3a\u8fd4\u56de\u503c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>nodejs \u91cc, \u4e3a\u5565 Arra&hellip;<\/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\/418742"}],"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=418742"}],"version-history":[{"count":1,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/418742\/revisions"}],"predecessor-version":[{"id":418744,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/418742\/revisions\/418744"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=418742"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=418742"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=418742"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}