{"id":171360,"date":"2024-05-08T17:28:03","date_gmt":"2024-05-08T09:28:03","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/171360.html"},"modified":"2024-05-08T17:28:12","modified_gmt":"2024-05-08T09:28:12","slug":"int%e5%b1%9e%e4%ba%8ejavascript%e4%b8%ad%e6%8f%90%e4%be%9b%e7%9a%84%e5%b8%b8%e7%94%a8%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%e5%90%97","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/171360.html","title":{"rendered":"int\u5c5e\u4e8ejavascript\u4e2d\u63d0\u4f9b\u7684\u5e38\u7528\u6570\u636e\u7c7b\u578b\u5417"},"content":{"rendered":"

\"int\u5c5e\u4e8ejavascript\u4e2d\u63d0\u4f9b\u7684\u5e38\u7528\u6570\u636e\u7c7b\u578b\u5417\"<\/p>\n

JavaScript\u4e2d\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec\uff1aString\u3001Number\u3001Boolean\u3001Object\u3001Null\u3001Undefined\u3001Symbol\uff08ES6\u65b0\u589e\uff09\u3001BigInt\uff08\u6700\u65b0\u6dfb\u52a0\uff09\u3002\u5176\u4e2d\uff0c\u5e76\u6ca1\u6709\u76f4\u63a5\u63d0\u4f9b\u540d\u4e3aint\u7684\u6570\u636e\u7c7b\u578b<\/strong>\u3002\u4e0d\u8fc7\uff0c\u5728\u5904\u7406\u6574\u6570\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u4f7f\u7528Number\u6570\u636e\u7c7b\u578b\u3002JavaScript\u7684Number\u7c7b\u578b\u65e2\u5305\u542b\u6574\u6570\u4e5f\u5305\u542b\u6d6e\u70b9\u6570\uff0c\u4f7f\u5176\u5728\u5904\u7406\u6570\u5b57\u65f6\u975e\u5e38\u7075\u6d3b\u3002<\/p>\n<\/p>\n

\u4e00\u3001DATA TYPES IN JAVASCRIPT<\/h3>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u6709\u51e0\u79cd\u6570\u636e\u7c7b\u578b\u53ef\u4ee5\u7528\u6765\u5b58\u50a8\u548c\u64cd\u4f5c\u4e0d\u540c\u5f62\u5f0f\u7684\u6570\u636e\u3002\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\u4f7f\u5f97JavaScript\u4f5c\u4e3a\u4e00\u79cd\u52a8\u6001\u8bed\u8a00\uff0c\u5728\u8fd0\u884c\u65f6\u53ef\u5904\u7406\u5404\u79cd\u6570\u636e\u7ed3\u6784\u3002JavaScript\u7684\u6570\u636e\u7c7b\u578b\u4e3b\u8981\u5206\u4e3a\u4e24\u5927\u7c7b\uff1a\u539f\u59cb\u7c7b\u578b\u548c\u5bf9\u8c61\u7c7b\u578b\u3002<\/p>\n<\/p>\n

\u539f\u59cb\u7c7b\u578b<\/h4>\n<\/p>\n
    \n
  1. String<\/strong> – \u7528\u4e8e\u8868\u793a\u6587\u672c\u6570\u636e\uff0c\u4f8b\u5982 "Hello World"\u3002<\/li>\n
  2. Number<\/strong> – \u53ef\u8868\u793a\u6574\u6570\u548c\u6d6e\u70b9\u6570\uff0c\u4f8b\u5982 42 \u6216 3.14\u3002JavaScript \u4f7f\u7528IEEE 754\u6807\u51c6\uff0c\u56e0\u6b64\u65e0\u6cd5\u533a\u5206\u6574\u578b\u548c\u6d6e\u70b9\u578b\u3002<\/li>\n
  3. Boolean<\/strong> – \u4ec5\u6709\u4e24\u4e2a\u503c\uff1atrue \u548c false\u3002\u7528\u4e8e\u6267\u884c\u903b\u8f91\u64cd\u4f5c\u3002<\/li>\n
  4. Undefined<\/strong> – \u5f53\u4e00\u4e2a\u53d8\u91cf\u5df2\u58f0\u660e\u4f46\u672a\u88ab\u8d4b\u503c\u65f6\uff0c\u5b83\u7684\u9ed8\u8ba4\u503c\u662f undefined\u3002<\/li>\n
  5. Null<\/strong> – \u7528\u4e8e\u8868\u793a\u201c\u65e0\u201d\u6216\u201c\u7a7a\u503c\u201d\u3002\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u5bf9\u8c61\u7c7b\u578b\u7684\u5360\u4f4d\u7b26\u3002<\/li>\n
  6. Symbol<\/strong> – ES6\u5f15\u5165\u7684\u65b0\u539f\u59cb\u6570\u636e\u7c7b\u578b\uff0c\u7528\u4e8e\u521b\u5efa\u552f\u4e00\u7684\u6807\u8bc6\u7b26\u3002<\/li>\n
  7. BigInt<\/strong> – \u7528\u4e8e\u8868\u793a\u975e\u5e38\u5927\u7684\u6574\u6570\u3002<\/li>\n<\/ol>\n

    \u5bf9\u8c61\u7c7b\u578b<\/h4>\n<\/p>\n

    \u9664\u4e86\u539f\u59cb\u7c7b\u578b\u5916\uff0cJavaScript\u4e2d\u4efb\u4f55\u6570\u636e\u7c7b\u578b\u90fd\u662f\u5bf9\u8c61\u3002\u5305\u62ec\u51fd\u6570\u548c\u6570\u7ec4\uff0c\u90fd\u88ab\u89c6\u4e3a\u5bf9\u8c61\u7c7b\u578b\u3002\u5bf9\u8c61\u7c7b\u578b\u793a\u4f8b\u5305\u62ec\uff1a<\/p>\n<\/p>\n

      \n
    1. Object<\/strong> – \u7528\u4e8e\u5b58\u50a8\u952e\u503c\u5bf9\u7684\u96c6\u5408\u3002<\/li>\n
    2. Array<\/strong> – \u7528\u4e8e\u5b58\u50a8\u6709\u5e8f\u96c6\u5408\u3002<\/li>\n
    3. Function<\/strong> – \u7279\u6b8a\u7c7b\u578b\u7684\u5bf9\u8c61\uff0c\u53ef\u88ab\u8c03\u7528\u3002<\/li>\n<\/ol>\n

      \u4e8c\u3001NUMBER DATA TYPE AND INTEGERS<\/h3>\n<\/p>\n

      \u867d\u7136JavaScript\u6ca1\u6709\u4e13\u95e8\u7684\u6574\u6570\uff08int\uff09\u6570\u636e\u7c7b\u578b\uff0c\u4f46\u5b83\u7528Number\u6765\u5904\u7406\u6240\u6709\u6570\u5b57\uff0c\u5305\u62ec\u6574\u6570\u548c\u6d6e\u70b9\u6570\u3002\u8fd9\u610f\u5473\u7740\uff0c\u65e0\u8bba\u4f60\u662f\u5728\u5904\u7406\u6570\u5b573\u62163.14\uff0c\u4f60\u90fd\u5c06\u4f7f\u7528Number\u7c7b\u578b\u3002\u8fd9\u6837\u7684\u8bbe\u8ba1\u7b80\u5316\u4e86\u6570\u503c\u5904\u7406\uff0c\u4f46\u4e5f\u610f\u5473\u7740\u5728\u5904\u7406\u5927\u6574\u6570\u65f6\u9700\u8981\u6ce8\u610f\u7cbe\u5ea6\u95ee\u9898\u3002<\/p>\n<\/p>\n

      \u5904\u7406\u6574\u6570<\/h4>\n<\/p>\n
        \n
      1. \u4f7f\u7528Number\u8fdb\u884c\u6574\u6570\u8fd0\u7b97<\/strong> – \u5728JavaScript\u4e2d\uff0c\u6240\u6709\u6570\u5b57\u8fd0\u7b97\u90fd\u901a\u8fc7Number\u7c7b\u578b\u8fdb\u884c\uff0c\u8fd9\u5305\u62ec\u52a0\u51cf\u4e58\u9664\u7b49\u64cd\u4f5c\u3002<\/li>\n
      2. \u7cbe\u5ea6\u9650\u5236<\/strong> – \u7531\u4e8eJavaScript\u4f7f\u752864\u4f4d\u6d6e\u70b9\u683c\u5f0f\u8868\u793a\u6570\u5b57\uff0c\u5f53\u6570\u5b57\u975e\u5e38\u5927\u65f6\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u7cbe\u5ea6\u4e22\u5931\u7684\u60c5\u51b5\u3002\u8fd9\u662f\u5904\u7406\u5927\u6574\u6570\uff08BigInt\u53ef\u4ee5\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff09\u65f6\u9700\u8981\u6ce8\u610f\u7684\u3002<\/li>\n<\/ol>\n

        \u4e09\u3001BIGINT DATA TYPE<\/h3>\n<\/p>\n

        \u4e3a\u4e86\u89e3\u51b3Number\u7c7b\u578b\u5728\u5904\u7406\u975e\u5e38\u5927\u7684\u6574\u6570\u65f6\u53ef\u80fd\u4e22\u5931\u7cbe\u5ea6\u7684\u95ee\u9898\uff0cJavaScript\u5728\u6700\u8fd1\u7684\u7248\u672c\u4e2d\u5f15\u5165\u4e86BigInt\u6570\u636e\u7c7b\u578b\u3002BigInt\u5141\u8bb8\u8868\u793a\u4efb\u610f\u5927\u5c0f\u7684\u6574\u6570\uff0c\u800c\u4e0d\u53d7\u4f20\u7edfNumber\u7cbe\u5ea6\u9650\u5236\u7684\u7ea6\u675f\u3002<\/p>\n<\/p>\n

        \u4f7f\u7528BigInt<\/h4>\n<\/p>\n
          \n
        1. \u521b\u5efaBigInt<\/strong> – \u4f7f\u7528BigInt()\u6784\u9020\u51fd\u6570\u6216\u5728\u6574\u6570\u540e\u9762\u6dfb\u52a0n<\/code>\u540e\u7f00\u6765\u521b\u5efaBigInt\uff0c\u5982123n<\/code>\u3002<\/li>\n
        2. BigInt\u4e0eNumber\u7684\u533a\u522b<\/strong> – BigInt\u63d0\u4f9b\u4e86\u8d85\u51faNumber\u80fd\u591f\u5b89\u5168\u8868\u793a\u7684\u6574\u6570\u8303\u56f4\u7684\u80fd\u529b\u3002\u56e0\u6b64\uff0c\u5728\u5904\u7406\u5927\u4e8e2^53\u7684\u6574\u6570\u65f6\uff0cBigInt\u662f\u66f4\u597d\u7684\u9009\u62e9\u3002<\/li>\n<\/ol>\n

          \u56db\u3001CONCLUSION<\/h3>\n<\/p>\n

          \u5728JavaScript\u4e2d\uff0c\u5c3d\u7ba1\u6ca1\u6709\u76f4\u63a5\u63d0\u4f9b\u540d\u4e3aint\u7684\u6570\u636e\u7c7b\u578b\u6765\u4e13\u95e8\u5904\u7406\u6574\u6570\uff0c\u901a\u8fc7Number\u548cBigInt\u7c7b\u578b\uff0c\u5b83\u4e3a\u5f00\u53d1\u8005\u63d0\u4f9b\u4e86\u5f3a\u5927\u7684\u6570\u5b57\u5904\u7406\u80fd\u529b\u3002\u4e86\u89e3\u548c\u6b63\u786e\u4f7f\u7528\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\uff0c\u5bf9\u4e8e\u7f16\u5199\u9ad8\u6548\u3001\u51c6\u786e\u7684JavaScript\u4ee3\u7801\u81f3\u5173\u91cd\u8981\u3002\u65e0\u8bba\u662f\u8fdb\u884c\u65e5\u5e38\u7684\u6570\u5b57\u8ba1\u7b97\uff0c\u8fd8\u662f\u5904\u7406\u5927\u91cf\u7684\u6570\u636e\u8fd0\u7b97\uff0cJavaScript\u7684\u8fd9\u4e9b\u6570\u636e\u7c7b\u578b\u90fd\u80fd\u591f\u6ee1\u8db3\u5f00\u53d1\u8005\u7684\u9700\u6c42\u3002<\/p>\n<\/p>\n

          \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
            \n
          1. \n

            JavaScript<\/strong>\u4e2d\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\u6709\u54ea\u4e9b\uff1f
            \n\u5728JavaScript\u4e2d\uff0c\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec\uff1a\u6570\u5b57\uff08number\uff09\uff0c\u5b57\u7b26\u4e32\uff08string\uff09\uff0c\u5e03\u5c14\u503c\uff08boolean\uff09\uff0c\u5bf9\u8c61\uff08object\uff09\uff0c\u6570\u7ec4\uff08array\uff09\uff0c\u4ee5\u53canull\u548cundefined\u3002\u5176\u4e2d\uff0cint\u5e76\u4e0d\u662fJavaScript\u4e2d\u7684\u6570\u636e\u7c7b\u578b\uff0c\u800c\u662f\u5728\u5176\u4ed6\u7f16\u7a0b\u8bed\u8a00\u4e2d\u5e38\u89c1\u7684\u6574\u6570\u7c7b\u578b\u3002<\/p>\n<\/li>\n

          2. \n

            JavaScript<\/strong>\u4e2d\u6709\u6ca1\u6709\u4e13\u95e8\u7684\u6570\u636e\u7c7b\u578b\u6765\u8868\u793a\u6574\u6570\uff1f
            \nJavaScript\u4e2d\u6ca1\u6709\u4e13\u95e8\u7684\u6570\u636e\u7c7b\u578b\u6765\u8868\u793a\u6574\u6570\u3002\u6570\u5b57\u7c7b\u578b\uff08number\uff09\u53ef\u4ee5\u5305\u542b\u6574\u6570\u548c\u6d6e\u70b9\u6570\u3002JavaScript\u4e2d\u7684\u6570\u5b57\u7c7b\u578b\u662f\u4e00\u79cd\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570\u8868\u793a\u6cd5\uff0c\u53ef\u4ee5\u8868\u793a\u6574\u6570\u3001\u5c0f\u6570\u3001\u4ee5\u53ca\u79d1\u5b66\u8ba1\u6570\u6cd5\u5f62\u5f0f\u7684\u6570\u5b57\u3002\u6240\u4ee5\uff0c\u5bf9\u4e8e\u6574\u6570\u503c\uff0cJavaScript\u7684\u6570\u5b57\u7c7b\u578b\u53ef\u4ee5\u5b8c\u5168\u6ee1\u8db3\u9700\u6c42\u3002<\/p>\n<\/li>\n

          3. \n

            \u5728JavaScript\u4e2d\uff0c\u5982\u4f55\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u6574\u6570\u7c7b\u578b\uff1f<\/strong>
            \n\u5982\u679c\u60f3\u8981\u5224\u65ad\u4e00\u4e2a\u503c\u662f\u5426\u4e3a\u6574\u6570\u7c7b\u578b\uff0c\u53ef\u4ee5\u4f7f\u7528\u5185\u7f6e\u7684\u5168\u5c40\u51fd\u6570Number.isInteger()<\/code>\u6765\u8fdb\u884c\u9a8c\u8bc1\u3002\u8fd9\u4e2a\u51fd\u6570\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5e03\u5c14\u503c\uff0ctrue\u8868\u793a\u8be5\u503c\u662f\u6574\u6570\uff0cfalse\u8868\u793a\u8be5\u503c\u4e0d\u662f\u6574\u6570\u3002\u540c\u65f6\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u53d6\u6a21\u8fd0\u7b97\u7b26%<\/code>\u6765\u8fdb\u884c\u5224\u65ad\uff0c\u5982\u679c\u4e00\u4e2a\u6570\u5bf9\u4e8e1\u53d6\u6a21\u540e\u4f59\u6570\u4e3a0\uff0c\u5219\u53ef\u4ee5\u5224\u5b9a\u4e3a\u6574\u6570\u3002\u4f8b\u5982\uff1a6 % 1<\/code>\u7684\u7ed3\u679c\u4e3a0\uff0c\u56e0\u6b64\u53ef\u4ee5\u5224\u5b9a6\u662f\u4e00\u4e2a\u6574\u6570\u3002<\/p>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"JavaScript\u4e2d\u5e38\u7528\u7684\u6570\u636e\u7c7b\u578b\u5305\u62ec\uff1aString\u3001Number\u3001Boolean\u3001Object\u3001Null\u3001 […]","protected":false},"author":3,"featured_media":171379,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/171360"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=171360"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/171360\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/171379"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=171360"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=171360"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=171360"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}