\u6211\u4eec\u53ef\u4ee5\u5bf9\u8fd9\u4e2a\u95ee\u9898\u4f7f\u7528\u6309\u4f4d&\u8fd0\u7b97\u7b26\uff0c&\u5bf9\u5176\u64cd\u4f5c\u6570\u8fdb\u884c\u8fd0\u7b97\uff0c\u5e76\u5c06\u5176\u89c6\u4e3a\u4e8c\u8fdb\u5236\u503c\uff0c\u7136\u540e\u6267 \u884c\u4e0e\u8fd0\u7b97\u3002
\nfunction isEven(num) { if (num & 1) { return false } else { return true } }
\n0\u4e8c\u8fdb\u5236\u6570\u662f000 1\u4e8c\u8fdb\u5236\u6570\u662f001 2\u4e8c\u8fdb\u5236\u6570\u662f010 3\u4e8c\u8fdb\u5236\u6570\u662f011 4\u4e8c\u8fdb\u5236\u6570\u662f
\n100 5\u4e8c\u8fdb\u5236\u6570\u662f101 6\u4e8c\u8fdb\u5236\u6570\u662f110 7\u4e8c\u8fdb\u5236\u6570\u662f111
\n\u4ee5\u6b64\u7c7b\u63a8…
\n\u56e0\u6b64\uff0c\u5f53\u6211\u4eec\u6267\u884cconsole. log(5&l)\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u65f6\uff0c\u7ed3\u679c\u4e3a1\u3002\u9996\u5148\uff0c&\u8fd0\u7b97\u7b26\u5c06\u4e24\u4e2a\u6570\u5b57\u90fd \u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\uff0c\u56e0\u6b645\u53d8\u4e3a101, 1\u53d8\u4e3a001\u3002
\n\u7136\u540e\uff0c\u5b83\u4f7f\u7528\u6309\u4f4d\u6000\u8fd0\u7b97\u7b26\u6bd4\u8f83\u6bcf\u4e2a\u4f4d(0\u548c1) \u3002101&001,\u4ece\u8868\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0c\u5982\u679ca&b
\n\u4e3a1,\u6240\u4ee55&1\u7ed3\u679c\u4e3al\u3002
\n101 & 001
\n101
\n001
\n001
\n1\u3001\t\u9996\u5148\u6211\u4eec\u6bd4\u8f83\u6700\u5de6\u8fb9\u76841&0,\u7ed3\u679c\u662f0\u3002
\n2\u3001\t\u7136\u540e\u6211\u4eec\u6bd4\u8f83\u4e2d\u95f4\u76840&0,\u7ed3\u679c\u662f0\u3002
\n3\u3001\t\u7136\u540e\u6211\u4eec\u6bd4\u8f83\u6700\u540e1&1,\u7ed3\u679c\u662f1\u3002
\n4\u3001\t\u6700\u540e\uff0c\u5f97\u5230\u4e00\u4e2a\u4e8c\u8fdb\u5236\u6570001,\u5bf9\u5e94\u7684\u5341\u8fdb\u5236\u6570\uff0c\u53731\u3002
\n\u7531\u6b64\u6211\u4eec\u4e5f\u53ef\u4ee5\u7b97\u51faconsole. log(4 & 1)\u7ed3\u679c\u4e3a0\u3002\u77e5\u90534\u7684\u6700\u540e\u4e00\u4f4d\u662f0,\u800c0 & 1\u5c06\u662f 0\u3002\u5982\u679c\u4f60\u5f88\u96be\u7406\u89e3\u8fd9\u4e00\u70b9\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u9012\u5f52\u51fd\u6570\u6765\u89e3\u51b3\u6b64\u95ee\u9898\u3002
\nfunction isEven(num) {
\nif (num < 0 || num = 1) return false\uff1b
\nif (num = 0) return true\uff1b
\nreturn isEven(num – 2)\uff1b
\n}<\/p>\n","protected":false},"excerpt":{"rendered":"
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