{"id":898,"date":"2022-03-10T21:08:46","date_gmt":"2022-03-10T13:08:46","guid":{"rendered":"http:\/\/www.henrycome.com\/wordpress\/?p=898"},"modified":"2022-03-10T21:08:46","modified_gmt":"2022-03-10T13:08:46","slug":"20220310210813","status":"publish","type":"post","link":"http:\/\/www.henrycome.com\/wordpress\/202203102108\/898","title":{"rendered":"P18-25\u6d41\u7a0b\u63a7\u5236-\u8001\u5e08.js"},"content":{"rendered":"
\/*P18-\u6d41\u7a0b\u63a7\u5236-\u8bed\u53e5\u5757*\/\n\n{\n    \/*\n    var myName = '\u5cf0\u534e';\n    console.log(myName);\/\/\u5cf0\u534e\n\n    let age = 15;\n    console.log(age);\/\/15\n\n    const YEAR =2020;\n    console.log(YEAR)\n    *\/\n}\n\/\/console.log(myName)\/\/\u5cf0\u534e\n\/\/console.log(age);\/\/ Uncaught ReferenceError: age is not defined\n\/\/console.log(YEAR);\/\/(\u9700\u5148\u6ce8\u91ca\u6389\u4e0a\u9762\u4e00\u884c\uff0c\u624d\u80fd\u8fd0\u884c\u5230\u8fd9\u884c\uff0c\u56e0\u4e3a\u8bed\u6cd5\u9519\u8bef\u5c31\u505c\u5728\u4e0a\u9762\u4e00\u884c)Uncaught ReferenceError: age is not defined\n\n\/*P19-\u6d41\u7a0b\u63a7\u5236-if\u548celse*\/\n\/*\n  console.clear();\n\nvar passcode = prompt('\u8bf7\u8f93\u5165\u6697\u53f7');\nif (passcode === '\u5929\u738b\u76d6\u5730\u864e'){\n    alert('\u767b\u5f55\u6210\u529f');\n} else{\n    alert('\u767b\u5f55\u5931\u8d25')\n}\n*\/\n\/** *\/\n\n\/*VH\uff1a\u8865\u5145\uff0c\u5224\u65ad\u540e\u5c06\u6267\u884c\u53ea\u4e00\u53e5\u7684\u8bdd\uff0c\u53ef\u4ee5\u4e0d\u7528{}\nif (b==0) return 0; \u9664\u6570\u4e3a0 \u5c31\u76f4\u63a5\u8fd4\u56de0\n\/\/if\u7684\u7b80\u5199\uff0c\u4e09\u5143\u8fd0\u7b97\u7b26\u7b80\u5199\u7684\u7528\u6cd5\u5728P17\u7ae0\u8282\u3002\nvar temperature = 10;\nconsole.log(temperature > 15 ? 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'\u51fa\u95e8' : '\u5728\u5bb6');\n\/** *\/\n\n\/*P20-\u6d41\u7a0b\u63a7\u5236-if\u548celse*\/\n\/*\nconsole.clear();\n\nvar role = prompt('\u8bf7\u8f93\u5165\u7528\u6237\u6743\u9650');\nif (role==='\u8d85\u7ea7\u7ba1\u7406\u5458'){\n    alert('\u8df3\u8f6c\u5230\u8d85\u7ea7\u7ba1\u7406\u5458\u9875\u9762')\n} else if(role==='\u7ba1\u7406\u5458'){\n    alert('\u8df3\u8f6c\u5230\u7ba1\u7406\u5458\u9875\u9762')\n} else{\n    alert('\u8df3\u8f6c\u5230\u7528\u6237\u9875\u9762')\n}\n*\/\n\n\/*P21-\u6d41\u7a0b\u63a7\u5236-switch\u548ccase*\/\n\n\/*\u6ce8\u91ca\u6389\uff0c\u7ed9\u4e0b\u8282\u7684\u8bed\u53e5\u8fd0\u884c\u63d0\u4f9b\u65b9\u4fbf\uff1a\nvar role= prompt('\u8bf7\u8f93\u5165\u7528\u6237\u6743\u9650');\nswitch(role){\n    \/\/\u9664default\u4e4b\u5916\uff0cbreak\u662f\u5fc5\u987b\u7684\u3002\n    \/\/\u5982\u679c\u6ca1\u6709break,\u4f1a\u4ece\u5339\u914d\u9879\u76ee\u5f00\u59cb\u6267\u884c\u5230\u5e95\n\n    case '\u8d85\u7ea7\u7ba1\u7406\u5458':\n      alert('\u8d85\u7ea7\u7ba1\u7406\u5458\u9875\u9762');\n      break;\n    case '\u7ba1\u7406\u5458':\n      alert('\u8df3\u8f6c\u5230\u7ba1\u7406\u5458\u9875\u9762');\n      break;\n    case '\u7279\u6b8a\u7528\u6237';\n      alert('\u8df3\u8f6c\u5230\u7279\u6b8a\u7528\u6237\u9875\u9762');\n      break;\n    case '\u4e00\u822c\u7528\u6237';\n      alert('\u8df3\u8f6c\u5230\u4e00\u822c\u7528\u6237\u9875\u9762');\n      break; 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i < 10; i=i+2){\n    console.log(i);\n}\n*\/\n\/*\u7c7b\u4f3ci=i+2\u90fd\u53ef\u4ee5\u7b80\u5199i+=2,\uff0c\n\/\/\u4e58\u9664\u53d6\u6a21\u7b49\u4e8c\u5143\u64cd\u4f5c\u7b26\u90fd\u53ef\u4ee5\u8fd9\u6837\uff08\u4e0b\u65b9\u6709\u5b9e\u4f8b\uff09\nvar i=3;\nvar j=3;\ni = i+2\nj += 2;\/\/+=\u5fc5\u987b\u6328\u7740\u5199\nconsole.log(i)\/\/5\nconsole.log(j)\/\/5\n\ni = i*2\nj *= 2\nconsole.log(i)\/\/10\nconsole.log(j)\/\/10\n\ni = i\/2\nj \/= 2\nconsole.log(i)\/\/5\nconsole.log(j)\/\/5\n\ni = i%3\nj %= 3\nconsole.log(i)\/\/2\nconsole.log(j)\/\/2\n\ni = i**3\nj **= 3\nconsole.log(i)\/\/8\nconsole.log(j)\/\/8\n*\/\n\n\/*\n\/\/\u5faa\u73af\u8f6c\u6362\n\/\/\u4ee5\u4e0b\u5faa\u73af\uff0c\u6253\u53700-9\nvar j = 0;\nwhile (j < 10){\n    console.log(j);\n    j++;\n}\n*\/\n\n\/*P25-\u6d41\u7a0b\u63a7\u5236-break\u548ccontinue*\/\n\/*\nfor(let i =0; i< 10; i++){\n    console.log(i,'if\u524d');\n    if(i===6){\n        break;\n    }\n    console.log(i,'if\u540e');\/\/\u7b49\u4e8e6\u7684\u65f6\u5019\uff0c\u5c31\u8df3\u51fa\u5faa\u73af\uff0c\u8fd9\u91cc\u89c1\u4e0d\u52306\n}\n*\/\n\/*\u6253\u5370\u7ed3\u679c\u5982\u4e0b\uff1a\nindex.js:159 0 "if\u524d"\nindex.js:163 0 "if\u540e"\nindex.js:159 1 "if\u524d"\nindex.js:163 1 "if\u540e"\nindex.js:159 2 "if\u524d"\nindex.js:163 2 "if\u540e"\nindex.js:159 3 "if\u524d"\nindex.js:163 3 "if\u540e"\nindex.js:159 4 "if\u524d"\nindex.js:163 4 "if\u540e"\nindex.js:159 5 "if\u524d"\nindex.js:163 5 "if\u540e"\nindex.js:159 6 "if\u524d"\uff0c\u8fd9\u91cc\u662f\u67096\u7684\uff0c\u540e\u9762\u90a3\u4e2a\u6253\u5370"if\u540e"\u5c31\u505c\u6b62\u6ca1\u6709\u4e86\u3002\n*\/\n\n\/\/continue\uff0c\u8df3\u8fc7\u5f53\u524d\u7b26\u5408if\u6761\u4ef6\u7684i\u503c\uff0c\u76f4\u63a5\u8fdb\u5165\u4e0b\u4e00\u4e2ai\nfor(let i =0; i< 10; i++){\n    console.log(i,'if\u524d');\n    if(i===6){\n        continue;\n    }\n    console.log(i,'if\u540e');\/\/\u7b49\u4e8e6\u7684\u65f6\u5019\uff0c\u5c31\u8df3\u51fa\u5faa\u73af\uff0c\u8fd9\u91cc\u89c1\u4e0d\u52306\n}\n\n\/*\nindex.js:185 0 "if\u524d"\nindex.js:189 0 "if\u540e"\nindex.js:185 1 "if\u524d"\nindex.js:189 1 "if\u540e"\nindex.js:185 2 "if\u524d"\nindex.js:189 2 "if\u540e"\nindex.js:185 3 "if\u524d"\nindex.js:189 3 "if\u540e"\nindex.js:185 4 "if\u524d"\nindex.js:189 4 "if\u540e"\nindex.js:185 5 "if\u524d"\nindex.js:189 5 "if\u540e"\nindex.js:185 6 "if\u524d"\nindex.js:185 7 "if\u524d"\nindex.js:189 7 "if\u540e"\nindex.js:185 8 "if\u524d"\nindex.js:189 8 "if\u540e"\nindex.js:185 9 "if\u524d"\nindex.js:189 9 "if\u540e"\n*\/\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\/*P18-\u6d41\u7a0b\u63a7\u5236-\u8bed\u53e5\u5757*\/ { \/* var myName = '\u5cf0\u534e'; cons […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"_links":{"self":[{"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/posts\/898"}],"collection":[{"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/comments?post=898"}],"version-history":[{"count":1,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/posts\/898\/revisions"}],"predecessor-version":[{"id":899,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/posts\/898\/revisions\/899"}],"wp:attachment":[{"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/media?parent=898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/categories?post=898"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.henrycome.com\/wordpress\/wp-json\/wp\/v2\/tags?post=898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}