{"id":346,"date":"2020-02-04T22:55:31","date_gmt":"2020-02-04T14:55:31","guid":{"rendered":"https:\/\/blog.cqdefxxx.com\/?p=346"},"modified":"2020-02-04T22:55:31","modified_gmt":"2020-02-04T14:55:31","slug":"%e5%b0%81%e8%a3%85%e5%ae%9e%e5%8f%82%e7%9a%84%e5%af%b9%e8%b1%a1-arguments%e5%92%8ccallee","status":"publish","type":"post","link":"https:\/\/blog.viter.top\/index.php\/2020\/02\/04\/%e5%b0%81%e8%a3%85%e5%ae%9e%e5%8f%82%e7%9a%84%e5%af%b9%e8%b1%a1-arguments%e5%92%8ccallee\/","title":{"rendered":"\u5c01\u88c5\u5b9e\u53c2\u7684\u5bf9\u8c61 arguments\u548ccallee"},"content":{"rendered":"<pre class=\"pure-highlightjs\"><code class=\"\">&lt;!DOCTYPE html&gt;\n&lt;html&gt;\n\t&lt;head&gt;\n\t\t&lt;meta charset=\"UTF-8\"&gt;\n\t\t&lt;title&gt;&lt;\/title&gt;\n\t\t&lt;script type=\"text\/javascript\"&gt;\n\t\t\t\/*\n\t\t\t * \u5728\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u6d4f\u89c8\u5668\u6bcf\u6b21\u90fd\u4f1a\u4f20\u9012\u8fdb\u4e24\u4e2a\u9690\u542b\u7684\u53c2\u6570\uff1a\n\t\t\t * \t1.\u51fd\u6570\u7684\u4e0a\u4e0b\u6587\u5bf9\u8c61 this\n\t\t\t * \t2.\u5c01\u88c5\u5b9e\u53c2\u7684\u5bf9\u8c61 arguments\n\t\t\t * \t\t- arguments\u662f\u4e00\u4e2a\u7c7b\u6570\u7ec4\u5bf9\u8c61,\u5b83\u4e5f\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u64cd\u4f5c\u6570\u636e\uff0c\u4e5f\u53ef\u4ee5\u83b7\u53d6\u957f\u5ea6\n\t\t\t * \t\t- \u5728\u8c03\u7528\u51fd\u6570\u65f6\uff0c\u6211\u4eec\u6240\u4f20\u9012\u7684\u5b9e\u53c2\u90fd\u4f1a\u5728arguments\u4e2d\u4fdd\u5b58\n\t\t\t * \t\t- arguments.length\u53ef\u4ee5\u7528\u6765\u83b7\u53d6\u5b9e\u53c2\u7684\u957f\u5ea6\n\t\t\t * \t\t- \u6211\u4eec\u5373\u4f7f\u4e0d\u5b9a\u4e49\u5f62\u53c2\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7arguments\u6765\u4f7f\u7528\u5b9e\u53c2\uff0c\n\t\t\t * \t\t\t\u53ea\u4e0d\u8fc7\u6bd4\u8f83\u9ebb\u70e6\n\t\t\t * \t\t\targuments[0] \u8868\u793a\u7b2c\u4e00\u4e2a\u5b9e\u53c2\n\t\t\t * \t\t\targuments[1] \u8868\u793a\u7b2c\u4e8c\u4e2a\u5b9e\u53c2 \u3002\u3002\u3002\n\t\t\t *\t\t- \u5b83\u91cc\u8fb9\u6709\u4e00\u4e2a\u5c5e\u6027\u53eb\u505acallee\uff0c\n\t\t\t * \t\t\t\u8fd9\u4e2a\u5c5e\u6027\u5bf9\u5e94\u4e00\u4e2a\u51fd\u6570\u5bf9\u8c61\uff0c\u5c31\u662f\u5f53\u524d\u6b63\u5728\u6307\u5411\u7684\u51fd\u6570\u7684\u5bf9\u8c61\n\t\t\t * \t\t\n\t\t\t *\/\n\t\t\t\n\t\t\tfunction fun(a,b){\n\t\t\t\t\/\/console.log(arguments instanceof Array);\n\t\t\t\t\/\/console.log(Array.isArray(arguments));\n\t\t\t\t\/\/console.log(arguments[1]);\n\t\t\t\t\/\/console.log(arguments.length);\n\t\t\t\tconsole.log(arguments.callee == fun);\n\t\t\t}\n\t\t\t\n\t\t\tfun(\"hello\",true);\n\t\t\t\n\t\t&lt;\/script&gt;\n\t&lt;\/head&gt;\n\t&lt;body&gt;\n\t&lt;\/body&gt;\n&lt;\/html&gt;\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta charset= &#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[4],"_links":{"self":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/346"}],"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=346"}],"version-history":[{"count":0,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/346\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/media?parent=346"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/categories?post=346"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/tags?post=346"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}