{"id":428,"date":"2020-02-14T14:46:38","date_gmt":"2020-02-14T06:46:38","guid":{"rendered":"https:\/\/blog.cqdefxxx.com\/?p=428"},"modified":"2020-02-14T14:46:38","modified_gmt":"2020-02-14T06:46:38","slug":"%e6%8e%a2%e7%b4%a2instanceof","status":"publish","type":"post","link":"https:\/\/blog.viter.top\/index.php\/2020\/02\/14\/%e6%8e%a2%e7%b4%a2instanceof\/","title":{"rendered":"\u63a2\u7d22instanceof"},"content":{"rendered":"<pre class=\"pure-highlightjs\"><code class=\"\">&lt;!DOCTYPE html&gt;\n&lt;html lang=\"en\"&gt;\n&lt;head&gt;\n  &lt;meta charset=\"UTF-8\"&gt;\n  &lt;title&gt;05_\u63a2\u7d22instanceof&lt;\/title&gt;\n&lt;\/head&gt;\n&lt;body&gt;\n&lt;!--\n1. instanceof\u662f\u5982\u4f55\u5224\u65ad\u7684?\n  * \u8868\u8fbe\u5f0f: A instanceof B\n  * \u5982\u679cB\u51fd\u6570\u7684\u663e\u5f0f\u539f\u578b\u5bf9\u8c61\u5728A\u5bf9\u8c61\u7684\u539f\u578b\u94fe\u4e0a, \u8fd4\u56detrue, \u5426\u5219\u8fd4\u56defalse\n2. Function\u662f\u901a\u8fc7new\u81ea\u5df1\u4ea7\u751f\u7684\u5b9e\u4f8b\n--&gt;\n&lt;script type=\"text\/javascript\"&gt;\n\n  \/*\n  \u6848\u4f8b1\n   *\/\n  function Foo() {  }\n  var f1 = new Foo()\n  console.log(f1 instanceof Foo) \/\/ true\n  console.log(f1 instanceof Object) \/\/ true\n\n  \/*\n  \u6848\u4f8b2\n   *\/\n  console.log(Object instanceof Function) \/\/ true\n  console.log(Object instanceof Object) \/\/ true\n  console.log(Function instanceof Function) \/\/ true\n  console.log(Function instanceof Object) \/\/ true\n\n  function Foo() {}\n  console.log(Object instanceof  Foo) \/\/ false\n&lt;\/script&gt;\n&lt;\/body&gt;\n&lt;\/html&gt;<\/code><\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&lt;!DOCTYPE html&gt; &lt;html lang=&#8221;en&#8221;&gt; &lt;head&gt; &lt;met","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[5],"_links":{"self":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/428"}],"collection":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/comments?post=428"}],"version-history":[{"count":0,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/428\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/media?parent=428"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/categories?post=428"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/tags?post=428"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}