{"id":12704,"date":"2023-11-28T23:03:57","date_gmt":"2023-11-28T15:03:57","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=12704"},"modified":"2023-11-29T22:00:54","modified_gmt":"2023-11-29T14:00:54","slug":"javascript-zhong-ru-he-pan-duan-zhi-shi-fou-wei-sh","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/javascript-zhong-ru-he-pan-duan-zhi-shi-fou-wei-sh\/","title":{"rendered":"JavaScript \u4e2d\u5982\u4f55\u5224\u65ad\u503c\u662f\u5426\u4e3a\u6570\u7ec4\uff1f"},"content":{"rendered":"

\u5728 JavaScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6570\u7ec4\uff1a<\/p>\n

    \n
  1. \n

    Array.isArray() \u65b9\u6cd5<\/strong>\uff1a
    \n\u8fd9\u662f\u6700\u53ef\u9760\u548c\u63a8\u8350\u7684\u65b9\u6cd5\uff0c\u5b83\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0c\u6307\u793a\u7ed9\u5b9a\u7684\u503c\u662f\u5426\u4e3a\u6570\u7ec4\u3002<\/p>\n

    const myArray = [1, 2, 3];\nconsole.log(Array.isArray(myArray)); \/\/ \u8f93\u51fa true\n\nconst myString = 'Hello';\nconsole.log(Array.isArray(myString)); \/\/ \u8f93\u51fa false\n<\/code><\/pre>\n<\/li>\n
  2. \n
    instanceof \u64cd\u4f5c\u7b26<\/strong>\uff1a
    \n\u8fd9\u4e2a\u64cd\u4f5c\u7b26\u7528\u4e8e\u68c0\u67e5\u4e00\u4e2a\u5bf9\u8c61\u662f\u5426\u662f\u7279\u5b9a\u7c7b\u578b\u7684\u5b9e\u4f8b\uff0c\u867d\u7136\u901a\u5e38\u53ef\u4ee5\u7528\u4e8e\u68c0\u67e5\u6570\u7ec4\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n
    const myArray = [1, 2, 3];\nconsole.log(myArray instanceof Array); \/\/ \u8f93\u51fa true\n\nconst myString = 'Hello';\nconsole.log(myString instanceof Array); \/\/ \u8f93\u51fa false\n<\/code><\/pre>\n<\/li>\n
  3. \n
    \u901a\u8fc7 Object.prototype.toString.call()<\/strong>\uff1a
    \n\u8fd9\u662f\u4e00\u4e2a\u901a\u7528\u7684\u65b9\u6cd5\uff0c\u5b83\u53ef\u4ee5\u8fd4\u56de\u5bf9\u8c61\u7684\u5185\u90e8 [[Class]] \u5c5e\u6027\u3002<\/p>\n
    const myArray = [1, 2, 3];\nconsole.log(Object.prototype.toString.call(myArray) === '[object Array]'); \/\/ \u8f93\u51fa true\n\nconst myString = 'Hello';\nconsole.log(Object.prototype.toString.call(myString) === '[object Array]'); \/\/ \u8f93\u51fa false\n<\/code><\/pre>\n<\/li>\n<\/ol>\n
    \u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0cArray.isArray()<\/code> \u662f\u6700\u7b80\u5355\u548c\u6700\u63a8\u8350\u7684\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6570\u7ec4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5728 JavaScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6570\u7ec4\uff1a Array.isArray() \u65b9\u6cd5 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[115],"tags":[],"class_list":["post-12704","post","type-post","status-publish","format-standard","hentry","category-javascript"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=12704"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12704\/revisions"}],"predecessor-version":[{"id":13529,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/12704\/revisions\/13529"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=12704"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=12704"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=12704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}