{"id":166814,"date":"2024-05-08T15:45:09","date_gmt":"2024-05-08T07:45:09","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166814.html"},"modified":"2024-05-08T15:45:15","modified_gmt":"2024-05-08T07:45:15","slug":"javascript%e6%95%b0%e5%ad%97%e7%9b%b8%e5%8a%a0","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/166814.html","title":{"rendered":"JavaScript\u6570\u5b57\u76f8\u52a0"},"content":{"rendered":"

\"JavaScript\u6570\u5b57\u76f8\u52a0\"<\/p>\n

JavaScript\u6570\u5b57\u76f8\u52a0\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u51fa\u4e4e\u610f\u6599\uff0c\u7279\u522b\u662f\u5f53\u6d89\u53ca\u5230\u6d6e\u70b9\u6570\u8fd0\u7b97\u65f6\u3002\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6570\u5b57\u76f8\u52a0\u662f\u76f4\u63a5\u7684\u3001\u65e0\u8bef\u5dee\u7684\u3001\u5e76\u4e14\u53ef\u9884\u6d4b\u7684<\/strong>\u3002\u4f46\u5728\u8fdb\u884c\u6d6e\u70b9\u6570\u8ba1\u7b97\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u53ef\u80fd\u4f1a\u51fa\u73b0\u7cbe\u5ea6\u95ee\u9898\u3002\u8fd9\u662f\u7531\u4e8eJavaScript\u9075\u5faaIEEE 754\u6807\u51c6\uff0c\u8be5\u6807\u51c6\u5728\u5904\u7406\u975e\u5e38\u5927\u6216\u975e\u5e38\u5c0f\u7684\u6570\u65f6\uff0c\u5c06\u6570\u503c\u8868\u793a\u4e3a\u8fd1\u4f3c\u503c\u800c\u975e\u7cbe\u786e\u503c\u3002\u5176\u4e2d\u4e00\u4e2a\u5c55\u5f00\u8be6\u7ec6\u63cf\u8ff0\u7684\u70b9\u662f\uff0c\u5f53\u4f60\u5c1d\u8bd5\u76f8\u52a00.1\u548c0.2\u65f6\uff0c\u671f\u671b\u5f97\u5230\u7684\u7ed3\u679c\u662f0.3\uff0c\u4f46\u5b9e\u9645\u4e0aJavaScript\u8fd4\u56de\u7684\u7ed3\u679c\u662f0.30000000000000004\u3002\u8fd9\u662f\u56e0\u4e3a\u5728\u4e8c\u8fdb\u5236\u4e2d\u65e0\u6cd5\u7cbe\u786e\u8868\u793a0.1\u548c0.2\uff0c\u76f8\u52a0\u540e\u7684\u7ed3\u679c\u5e76\u4e0d\u662f\u7cbe\u786e\u76840.3\uff0c\u8fd9\u79cd\u60c5\u51b5\u4e0b\u9700\u8981\u501f\u52a9\u7279\u5b9a\u65b9\u6cd5\u6765\u4fee\u6b63\u7cbe\u5ea6\u95ee\u9898\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u6570\u5b57\u76f8\u52a0\u7684\u57fa\u672c\u539f\u5219<\/h2>\n<\/p>\n

JavaScript\u4e2d\u8fdb\u884c\u6570\u5b57\u76f8\u52a0\u901a\u5e38\u9075\u5faa\u51e0\u4e2a\u57fa\u672c\u539f\u5219\u3002\u5bf9\u4e8e\u6574\u6570\u800c\u8a00\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u5f88\u76f4\u63a5\u3002\u4f46\u5f53\u6d89\u53ca\u5230\u6d6e\u70b9\u6570\u65f6\uff0c\u7531\u4e8e\u7cbe\u5ea6\u7684\u9650\u5236\uff0c\u6211\u4eec\u53ef\u80fd\u4e0d\u4f1a\u5f97\u5230\u671f\u671b\u4e2d\u7684\u7ed3\u679c\u3002\u4e3a\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u786e\u4fdd\u6211\u4eec\u83b7\u5f97\u66f4\u7cbe\u786e\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n

\u6574\u6570\u76f8\u52a0<\/h3>\n<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u6574\u6570\u7684\u76f8\u52a0\u901a\u5e38\u4e0d\u4f1a\u6709\u95ee\u9898\u3002JavaScript\u4f7f\u7528Number\u7c7b\u578b\u6765\u8868\u793a\u6240\u6709\u7684\u6570\u5b57\uff0c\u65e0\u8bba\u6574\u6570\u8fd8\u662f\u6d6e\u70b9\u6570\uff0c\u6700\u9ad8\u5b89\u5168\u6574\u6570\u8303\u56f4\u662f2\u768453\u6b21\u65b9\u51cf1\uff08Number.MAX_SAFe<\/a>_INTEGER\uff09\u3002<\/p>\n<\/p>\n

let sum = 1 + 2; \/\/ \u7ed3\u679c\u4e3a3\uff0c\u8fd9\u662f\u7cbe\u786e\u7684<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6574\u6570\u76f8\u52a0\u65f6\uff0c\u53ea\u8981\u4e0d\u8d85\u8fc7JavaScript\u7684\u6570\u5b57\u5b89\u5168\u8303\u56f4\uff0c\u7ed3\u679c\u901a\u5e38\u90fd\u662f\u7cbe\u786e\u7684\u3002<\/p>\n<\/p>\n
\u6d6e\u70b9\u6570\u76f8\u52a0<\/h3>\n<\/p>\n
\u6d6e\u70b9\u6570\u76f8\u52a0\u5c31\u53d8\u5f97\u76f8\u5bf9\u590d\u6742\u3002\u7531\u4e8e\u7cbe\u5ea6\u7684\u95ee\u9898\uff0c\u5b83\u4eec\u7684\u76f8\u52a0\u53ef\u80fd\u4e0d\u4f1a\u5f97\u5230\u7cbe\u786e\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n
let sum = 0.1 + 0.2; \/\/ \u7ed3\u679c\u53ef\u80fd\u4e0d\u662f0.3<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u5904\u7406\u6d6e\u70b9\u6570\u7cbe\u5ea6\u95ee\u9898<\/h2>\n<\/p>\n
\u6d6e\u70b9\u6570\u7684\u7cbe\u5ea6\u95ee\u9898\u662f\u4e0d\u53ef\u907f\u514d\u7684\uff0c\u4f46\u6709\u591a\u79cd\u65b9\u6cd5\u53ef\u4ee5\u51cf\u5c11\u5176\u5f71\u54cd\u3002<\/p>\n<\/p>\n
\u4f7f\u7528toFixed()\u65b9\u6cd5<\/h3>\n<\/p>\n
toFixed()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u628a\u4e00\u4e2a\u6570\u683c\u5f0f\u5316\u4e3a\u7279\u5b9a\u5c0f\u6570\u4f4d\u6570\u7684\u6570\u5b57\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
let sum = (0.1 + 0.2).toFixed(2); \/\/ "0.30"\uff0c\u4f46\u8fd9\u662f\u4e00\u4e2a\u5b57\u7b26\u4e32<\/p>\n
sum = Number(sum); \/\/ \u8f6c\u56de\u6570\u5b57\uff0c\u5982\u679c\u9700\u8981\u7684\u662f\u6570\u5b57\u7c7b\u578b<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u901a\u8fc7\u5c06\u7ed3\u679c\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u518d\u8f6c\u56de\u6570\u5b57\u7684\u65b9\u5f0f\u6765\u201c\u4fee\u6b63\u201d\u6d6e\u70b9\u6570\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n
\u4f7f\u7528\u5185\u90e8\u5e93\u6216\u8005\u5916\u90e8\u5e93<\/h3>\n<\/p>\n
\u53e6\u5916\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u73b0\u6709\u7684\u5e93\uff0c\u5982decimal.js\u3001bignumber.js\u6216math.js\uff0c\u5b83\u4eec\u4e3a\u6570\u5b57\u8fd0\u7b97\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u7cbe\u5ea6\u3002<\/p>\n<\/p>\n
const Decimal = require('decimal.js');<\/p>\n
let sum = new Decimal(0.1).plus(new Decimal(0.2)); \/\/ Decimal\u5bf9\u8c61\uff0c\u975e\u5e38\u7cbe\u51c6<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e9b\u5e93\u901a\u8fc7\u81ea\u5df1\u7684\u7b97\u6cd5\u5b9e\u73b0\u4e86\u66f4\u7cbe\u786e\u7684\u6570\u5b57\u8fd0\u7b97\u3002<\/p>\n<\/p>\n
\u4e09\u3001JavaScript\u4e2dNumber\u7c7b\u578b\u8be6\u89e3<\/h2>\n<\/p>\n
JavaScript\u7684Number\u578b\u662f\u4e00\u79cd\u53cc\u7cbe\u5ea664\u4f4d\u4e8c\u8fdb\u5236\u683c\u5f0f\u7684IEEE 754\u503c\u3002\u5b83\u53ef\u4ee5\u8868\u793a-2^53\u52302^53\u4e4b\u95f4\u7684\u6574\u6570\u503c\u548c\u66f4\u5c0f\u8303\u56f4\u5185\u7684\u975e\u6574\u6570\u503c\u3002<\/p>\n<\/p>\n
\u5b89\u5168\u6574\u6570\u548cNumber\u5bf9\u8c61<\/h3>\n<\/p>\n
Number\u5bf9\u8c61\u5305\u542b\u7684\u5c5e\u6027\u5982MAX_VALUE<\/code>\u3001MIN_VALUE<\/code>\u3001MAX_SAFE_INTEGER<\/code>\u4ee5\u53caMIN_SAFE_INTEGER<\/code>\u90fd\u662f\u5f00\u53d1\u8005\u5728\u5904\u7406\u6570\u5b57\u65f6\u5fc5\u987b\u8003\u8651\u7684\u3002<\/p>\n<\/p>\n
console.log(Number.MAX_SAFE_INTEGER); \/\/ \u5b89\u5168\u6574\u6570\u7684\u6700\u5927\u8303\u56f4<\/p>\n
console.log(Number.MIN_SAFE_INTEGER); \/\/ \u5b89\u5168\u6574\u6570\u7684\u6700\u5c0f\u8303\u56f4<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6d6e\u70b9\u6570\u7684\u8868\u793a<\/h3>\n<\/p>\n
\u5728JavaScript\u4e2d\uff0c\u6240\u6709\u6570\u5b57\u90fd\u4ee564\u4f4d\u6d6e\u70b9\u683c\u5f0f\u5b58\u50a8\u3002\u8fd9\u79cd\u683c\u5f0f\u7684\u4e3b\u8981\u7279\u70b9\u662f\u6709\u4e00\u4e2a\u56fa\u5b9a\u7684\u6570\u4f4d\u7528\u4e8e\u6574\u6570\u90e8\u5206\uff0c\u800c\u5269\u4f59\u7684\u6570\u4f4d\u5219\u7528\u4e8e\u5c0f\u6570\u90e8\u5206\u3002\u8fd9\u610f\u5473\u7740\u5e76\u4e0d\u662f\u6240\u6709\u6570\u5b57\u90fd\u53ef\u4ee5\u7cbe\u786e\u8868\u793a\u3002<\/p>\n<\/p>\n
\u56db\u3001\u5e38\u89c1\u6570\u5b66\u8fd0\u7b97\u548c\u7cbe\u5ea6<\/h2>\n<\/p>\n
\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d\uff0c\u9664\u4e86\u76f8\u52a0\uff0c\u8fd8\u5b58\u5728\u5f88\u591a\u5176\u4ed6\u7c7b\u578b\u7684\u6570\u5b66\u8fd0\u7b97\u3002\u6bcf\u79cd\u8fd0\u7b97\u90fd\u53ef\u80fd\u6d89\u53ca\u7cbe\u5ea6\u95ee\u9898\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u3002<\/p>\n<\/p>\n
\u5176\u4ed6\u57fa\u672c\u8fd0\u7b97<\/h3>\n<\/p>\n
\u52a0\u51cf\u4e58\u9664\u7b49\u57fa\u672c\u8fd0\u7b97\u5728JavaScript\u4e2d\u901a\u5e38\u6bd4\u8f83\u76f4\u63a5\uff0c\u4f46\u4e5f\u8981\u6ce8\u610f\u8fb9\u7f18\u60c5\u51b5\u3002<\/p>\n<\/p>\n
let result = (0.7 * 100 - 0.4 * 100) \/ 100; \/\/ \u53ef\u4ee5\u5c1d\u8bd5\u7528\u6574\u6570\u8fd0\u7b97\u6765\u907f\u514d\u6d6e\u70b9\u6570\u7684\u95ee\u9898<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u4e00\u4e9b\u6280\u5de7\u6765\u907f\u514d\u7531\u6d6e\u70b9\u6570\u5f15\u8d77\u7684\u7cbe\u5ea6\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u9ad8\u7ea7\u6570\u5b66\u51fd\u6570<\/h3>\n<\/p>\n
\u590d\u6742\u7684\u6570\u5b66\u51fd\u6570\uff0c\u5982Math.pow()<\/code>\u3001Math.sqrt()<\/code>\u7b49\uff0c\u5728JavaScript\u4e2d\u90fd\u5f97\u5230\u4e86\u5f88\u597d\u7684\u652f\u6301\uff0c\u4e0d\u8fc7\u5728\u6781\u7aef\u60c5\u51b5\u4e0b\u4ecd\u7136\u4f1a\u51fa\u73b0\u7cbe\u5ea6\u95ee\u9898\u3002<\/p>\n<\/p>\n
let result = Math.sqrt(2); \/\/ \u5e73\u65b9\u6839\u7684\u8ba1\u7b97<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u6570\u5b57\u76f8\u52a0\u7684\u5b9e\u8df5\u5e94\u7528<\/h2>\n<\/p>\n
\u5728Web\u5f00\u53d1\u4e2d\uff0c\u6570\u5b57\u76f8\u52a0\u7684\u64cd\u4f5c\u65e0\u5904\u4e0d\u5728\u3002\u4f8b\u5982\uff0c\u5728\u7535\u5546\u7f51\u7ad9\u4e0a\u8ba1\u7b97\u603b\u4ef7\u683c\u65f6\uff0c\u6b63\u786e\u5730\u5904\u7406\u6570\u5b57\u76f8\u52a0\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n<\/p>\n
\u5904\u7406\u91d1\u878d\u4ea4\u6613<\/h3>\n<\/p>\n
\u5728\u91d1\u878d\u4ea4\u6613\u4e2d\uff0c\u7cbe\u786e\u7684\u8ba1\u7b97\u6700\u4e3a\u5173\u952e\u3002\u8bef\u5dee\u5373\u4f7f\u518d\u5c0f\uff0c\u4e5f\u53ef\u80fd\u5bfc\u81f4\u5de8\u5927\u7684\u7ecf\u6d4e\u635f\u5931\u3002\u6b64\u65f6\uff0c\u4f7f\u7528\u8bf8\u5982decimal.js\u8fd9\u6837\u7684\u5e93\u6765\u5904\u7406\u91d1\u989d\u7684\u52a0\u6cd5\u6210\u4e3a\u4e86\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n
\u6570\u636e\u5206\u6790\u548c\u53ef\u89c6\u5316<\/h3>\n<\/p>\n
\u5728\u6570\u636e\u5206\u6790\u548c\u53ef\u89c6\u5316\u8fc7\u7a0b\u4e2d\uff0c\u6570\u5b57\u52a0\u6cd5\u7528\u4e8e\u8ba1\u7b97\u603b\u548c\u3001\u5e73\u5747\u6570\u7b49\u3002\u5728\u8fd9\u79cd\u573a\u666f\u4e0b\uff0c\u8bef\u5dee\u7d2f\u79ef\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6700\u7ec8\u7ed3\u679c\u7684\u504f\u5dee\uff0c\u56e0\u6b64\u9700\u7279\u522b\u6ce8\u610f\u3002<\/p>\n<\/p>\n
\u6027\u80fd\u4f18\u5316<\/h3>\n<\/p>\n
\u6267\u884c\u5927\u91cf\u8ba1\u7b97\u65f6\uff0c\u6027\u80fd\u6210\u4e3a\u53e6\u4e00\u4e2a\u8003\u8651\u56e0\u7d20\u3002\u539f\u751f\u7684\u6570\u5b66\u8fd0\u7b97\u901a\u5e38\u6bd4\u7b2c\u4e09\u65b9\u5e93\u66f4\u5feb\uff0c\u4f46\u5f53\u7cbe\u786e\u5ea6\u6210\u4e3a\u8981\u6c42\u65f6\uff0c\u9002\u5f53\u7684\u6743\u8861\u662f\u5fc5\u8981\u7684\u3002<\/p>\n<\/p>\n
\u5728JavaScript\u4e2d\uff0c\u6570\u5b57\u76f8\u52a0\u901a\u5e38\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4efb\u52a1\uff0c\u4f46\u4e86\u89e3\u5176\u80cc\u540e\u7684\u5de5\u4f5c\u539f\u7406\u548c\u6f5c\u5728\u7684\u95ee\u9898\uff0c\u5c06\u5e2e\u52a9\u6211\u4eec\u5199\u51fa\u66f4\u53ef\u9760\u3001\u51c6\u786e\u7684\u4ee3\u7801\u3002\u901a\u8fc7\u4e00\u4e9b\u6280\u5de7\u548c\u989d\u5916\u7684\u5e93\uff0c\u6211\u4eec\u53ef\u4ee5\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u5728\u6570\u5b57\u76f8\u52a0\u65f6\u51fa\u73b0\u7684\u7cbe\u5ea6\u95ee\u9898\u3002\u5728\u5904\u7406\u91d1\u878d\u3001\u79d1\u5b66\u8ba1\u7b97\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u9886\u57df\u65f6\uff0c\u8fd9\u4e9b\u77e5\u8bc6\u5c24\u5176\u91cd\u8981\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u4ec0\u4e48\u662fJavaScript\u6570\u5b57\u76f8\u52a0\u7684\u65b9\u6cd5\uff1f<\/strong><\/p>\n
JavaScript\u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5c06\u6570\u5b57\u76f8\u52a0\u3002\u4f60\u53ef\u4ee5\u4f7f\u7528"+"\u64cd\u4f5c\u7b26\u5c06\u4e24\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\u76f8\u52a0\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528Math\u5bf9\u8c61\u4e2d\u7684\u65b9\u6cd5\u6267\u884c\u66f4\u590d\u6742\u7684\u6570\u5b66\u8fd0\u7b97\u3002\u53e6\u5916\uff0c\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u6a21\u677f\u5b57\u7b26\u4e32\u548c\u53d8\u91cf\u6765\u5b9e\u73b0\u6570\u5b57\u76f8\u52a0\u7684\u52a8\u6001\u8ba1\u7b97\u3002<\/p>\n
2. JavaScript\u4e2d\u7684\u6570\u5b57\u76f8\u52a0\u6709\u54ea\u4e9b\u6ce8\u610f\u4e8b\u9879\uff1f<\/strong><\/p>\n
\u5728JavaScript\u4e2d\uff0c\u6570\u5b57\u76f8\u52a0\u65f6\u9700\u8981\u6ce8\u610f\u4e00\u4e9b\u89c4\u5219\u3002\u9996\u5148\uff0cJavaScript\u5c06\u6570\u5b57\u548c\u5b57\u7b26\u4e32\u76f8\u52a0\u65f6\u4f1a\u9ed8\u8ba4\u5c06\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5e76\u8fdb\u884c\u62fc\u63a5\uff0c\u56e0\u6b64\u8981\u907f\u514d\u51fa\u73b0\u4e0d\u60f3\u8981\u7684\u7ed3\u679c\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528parseInt()\u6216parseFloat()\u51fd\u6570\u5c06\u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a\u6570\u5b57\u518d\u8fdb\u884c\u76f8\u52a0\u3002\u5176\u6b21\uff0c\u5728\u5904\u7406\u5927\u6570\u65f6\uff0cJavaScript\u4f7f\u752864\u4f4d\u53cc\u7cbe\u5ea6\u6d6e\u70b9\u6570\u8fdb\u884c\u8ba1\u7b97\uff0c\u53ef\u80fd\u4f1a\u51fa\u73b0\u7cbe\u5ea6\u4e22\u5931\u7684\u60c5\u51b5\uff0c\u6b64\u65f6\u4f60\u53ef\u4ee5\u4f7f\u7528JavaScript\u63d0\u4f9b\u7684Big Number\u5e93\u6765\u8fdb\u884c\u7cbe\u786e\u8ba1\u7b97\u3002<\/p>\n
3. \u5982\u4f55\u5728JavaScript\u4e2d\u5904\u7406\u975e\u6570\u5b57\u7c7b\u578b\u7684\u76f8\u52a0\u64cd\u4f5c\uff1f<\/strong><\/p>\n
\u9664\u4e86\u5c06\u6570\u5b57\u76f8\u52a0\uff0cJavaScript\u8fd8\u5141\u8bb8\u5904\u7406\u975e\u6570\u5b57\u7c7b\u578b\u7684\u76f8\u52a0\u64cd\u4f5c\u3002\u5f53\u4f60\u5c06\u6570\u5b57\u4e0e\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u76f8\u52a0\u65f6\uff0cJavaScript\u4f1a\u5c1d\u8bd5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5e76\u8fdb\u884c\u62fc\u63a5\u3002\u4f8b\u5982\uff0c\u5f53\u4f60\u5c06\u6570\u5b57\u4e0e\u5e03\u5c14\u578b\u3001\u6570\u7ec4\u3001\u5bf9\u8c61\u7b49\u6570\u636e\u7c7b\u578b\u76f8\u52a0\u65f6\uff0cJavaScript\u4f1a\u5c06\u5b83\u4eec\u81ea\u52a8\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5e76\u8fdb\u884c\u62fc\u63a5\u3002\u5982\u679c\u4f60\u5e0c\u671b\u76f4\u63a5\u8fdb\u884c\u6570\u5b66\u8fd0\u7b97\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528parseInt()\u6216parseFloat()\u51fd\u6570\u5c06\u975e\u6570\u5b57\u7c7b\u578b\u8f6c\u6362\u4e3a\u6570\u5b57\u518d\u8fdb\u884c\u76f8\u52a0\u3002\u53e6\u5916\uff0c\u5f53\u4f60\u5904\u7406\u6570\u7ec4\u76f8\u52a0\u65f6\uff0cJavaScript\u4f1a\u5c06\u5176\u8f6c\u6362\u4e3a\u9017\u53f7\u5206\u9694\u7684\u5b57\u7b26\u4e32\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528join()\u65b9\u6cd5\u5c06\u5176\u8fd8\u539f\u4e3a\u5b57\u7b26\u4e32\u6216\u4f7f\u7528reduce()\u65b9\u6cd5\u8fdb\u884c\u7d2f\u52a0\u8ba1\u7b97\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"JavaScript\u6570\u5b57\u76f8\u52a0\u7684\u7ed3\u679c\u53ef\u80fd\u4f1a\u51fa\u4e4e\u610f\u6599\uff0c\u7279\u522b\u662f\u5f53\u6d89\u53ca\u5230\u6d6e\u70b9\u6570\u8fd0\u7b97\u65f6\u3002\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u6570\u5b57\u76f8\u52a0\u662f\u76f4\u63a5\u7684 […]","protected":false},"author":3,"featured_media":166821,"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\/166814"}],"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=166814"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/166814\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/166821"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=166814"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=166814"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=166814"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}