1+ // JavaScript (Browser) 示例代码 - CodeForge 代码执行环境
2+
3+ console . log ( '🎉 欢迎使用 CodeForge!' ) ;
4+ console . log ( 'Welcome to CodeForge!' ) ;
5+ console . log ( '' ) ;
6+
7+ console . log ( '=========================================' ) ;
8+ console . log ( ' CodeForge JavaScript ' ) ;
9+ console . log ( '=========================================' ) ;
10+ console . log ( '' ) ;
11+
12+ // 基本输出示例
13+ console . log ( '✅ JavaScript 运行成功! (JavaScript is working!)' ) ;
14+ console . log ( '🌟 这是 Node.js 脚本 (This is Node.js script)' ) ;
15+ console . log ( '' ) ;
16+
17+ // 变量操作
18+ const name = 'CodeForge' ;
19+ const version = 'JavaScript' ;
20+ const number1 = 10 ;
21+ const number2 = 20 ;
22+ const result = number1 + number2 ;
23+
24+ console . log ( '🔢 简单计算 (Simple calculation):' ) ;
25+ console . log ( `${ number1 } + ${ number2 } = ${ result } ` ) ;
26+ console . log ( '' ) ;
27+
28+ // 字符串操作
29+ console . log ( '📝 字符串操作 (String operations):' ) ;
30+ console . log ( `平台名称 (Platform): ${ name } ` ) ;
31+ console . log ( `语言版本 (Language): ${ version } ` ) ;
32+ console . log ( `完整信息 (Full info): ${ name } - ${ version } ` ) ;
33+ console . log ( '' ) ;
34+
35+ // 循环示例
36+ console . log ( '🔄 循环输出 (Loop output):' ) ;
37+ for ( let i = 1 ; i <= 5 ; i ++ ) {
38+ console . log ( `第 ${ i } 次输出 (Output #${ i } ): Hello from CodeForge!` ) ;
39+ }
40+ console . log ( '' ) ;
41+
42+ // 数组操作
43+ const fruits = [ '苹果' , '香蕉' , '橙子' , '葡萄' ] ;
44+ console . log ( '🍎 水果列表 (Fruit list):' ) ;
45+ fruits . forEach ( ( fruit , index ) => {
46+ console . log ( `${ index + 1 } . ${ fruit } ` ) ;
47+ } ) ;
48+ console . log ( '' ) ;
49+
50+ // 条件判断
51+ const score = 85 ;
52+ console . log ( '📊 成绩评估 (Score evaluation):' ) ;
53+ if ( score >= 90 ) {
54+ console . log ( '优秀! (Excellent!)' ) ;
55+ } else if ( score >= 80 ) {
56+ console . log ( '良好! (Good!)' ) ;
57+ } else if ( score >= 60 ) {
58+ console . log ( '及格 (Pass)' ) ;
59+ } else {
60+ console . log ( '需要努力 (Need improvement)' ) ;
61+ }
62+ console . log ( '' ) ;
63+
64+ // undefined 和 null 示例
65+ console . log ( '🔍 undefined/null 示例 (undefined/null example):' ) ;
66+ let optionalValue = 42 ;
67+ if ( optionalValue !== undefined && optionalValue !== null ) {
68+ console . log ( `可选值: ${ optionalValue } (Optional value: ${ optionalValue } )` ) ;
69+ } else {
70+ console . log ( '值为空 (Value is undefined/null)' ) ;
71+ }
72+ console . log ( '' ) ;
73+
74+ // 函数示例
75+ function greetUser ( username ) {
76+ return `Hello, ${ username } ! 👋` ;
77+ }
78+
79+ console . log ( '🎭 函数示例 (Function example):' ) ;
80+ const greeting = greetUser ( 'CodeForge用户' ) ;
81+ console . log ( greeting ) ;
82+ console . log ( '' ) ;
83+
84+ // 箭头函数示例
85+ const addNumbers = ( a , b ) => a + b ;
86+ const multiplyNumbers = ( a , b ) => {
87+ return a * b ;
88+ } ;
89+
90+ console . log ( '⚡ 箭头函数示例 (Arrow function example):' ) ;
91+ console . log ( `5 + 3 = ${ addNumbers ( 5 , 3 ) } ` ) ;
92+ console . log ( `6 × 7 = ${ multiplyNumbers ( 6 , 7 ) } ` ) ;
93+ console . log ( '' ) ;
94+
95+ // 数组高阶函数示例
96+ console . log ( '🔧 数组高阶函数示例 (Array higher-order functions):' ) ;
97+ const numbers = Array . from ( { length : 10 } , ( _ , i ) => i + 1 ) ;
98+ const evenNumbers = numbers . filter ( num => num % 2 === 0 ) ;
99+ const doubled = numbers . map ( num => num * 2 ) ;
100+ const sum = numbers . reduce ( ( acc , num ) => acc + num , 0 ) ;
101+
102+ console . log ( `原始数字 (Original): ${ numbers . join ( ', ' ) } ` ) ;
103+ console . log ( `偶数 (Even numbers): ${ evenNumbers . join ( ', ' ) } ` ) ;
104+ console . log ( `翻倍 (Doubled): ${ doubled . join ( ', ' ) } ` ) ;
105+ console . log ( `总和 (Sum): ${ sum } ` ) ;
106+ console . log ( '' ) ;
107+
108+ // 对象操作示例
109+ console . log ( '👤 对象示例 (Object example):' ) ;
110+ const person = {
111+ name : '张三' ,
112+ age : 25 ,
113+ city : '北京' ,
114+ introduce ( ) {
115+ return `我是${ this . name } ,今年${ this . age } 岁,住在${ this . city } ` ;
116+ }
117+ } ;
118+
119+ console . log ( `姓名: ${ person . name } , 年龄: ${ person . age } , 城市: ${ person . city } ` ) ;
120+ console . log ( person . introduce ( ) ) ;
121+ console . log ( '' ) ;
122+
123+ // 解构赋值示例
124+ console . log ( '🔍 解构赋值示例 (Destructuring assignment):' ) ;
125+ const { name : personName , age : personAge } = person ;
126+ const [ first , second , ...rest ] = fruits ;
127+
128+ console . log ( `解构对象 (Destructured object): ${ personName } , ${ personAge } ` ) ;
129+ console . log ( `解构数组 (Destructured array): ${ first } , ${ second } , 其他: [${ rest . join ( ', ' ) } ]` ) ;
130+ console . log ( '' ) ;
131+
132+ // Promise 示例
133+ console . log ( '🎯 Promise 示例 (Promise example):' ) ;
134+ const delay = ( ms ) => new Promise ( resolve => setTimeout ( resolve , ms ) ) ;
135+
136+ // 使用 Promise
137+ delay ( 100 )
138+ . then ( ( ) => {
139+ console . log ( 'Promise 已完成! (Promise completed!)' ) ;
140+ return '异步操作结果' ;
141+ } )
142+ . then ( result => {
143+ console . log ( `异步结果: ${ result } ` ) ;
144+ } )
145+ . catch ( error => {
146+ console . error ( 'Promise 错误:' , error ) ;
147+ } ) ;
148+
149+ // async/await 示例
150+ async function asyncExample ( ) {
151+ try {
152+ console . log ( '⏳ 开始异步操作...' ) ;
153+ await delay ( 50 ) ;
154+ console . log ( '✅ async/await 完成!' ) ;
155+ return '异步函数结果' ;
156+ } catch ( error ) {
157+ console . error ( 'async/await 错误:' , error ) ;
158+ }
159+ }
160+
161+ // 立即执行异步函数
162+ ( async ( ) => {
163+ const result = await asyncExample ( ) ;
164+ console . log ( `异步函数返回: ${ result } ` ) ;
165+ console . log ( '' ) ;
166+ } ) ( ) ;
167+
168+ // 类和继承示例
169+ console . log ( '🏗️ 类示例 (Class example):' ) ;
170+ class Animal {
171+ constructor ( name , type ) {
172+ this . name = name ;
173+ this . type = type ;
174+ }
175+
176+ speak ( ) {
177+ return `${ this . name } 发出声音` ;
178+ }
179+ }
180+
181+ class Dog extends Animal {
182+ constructor ( name ) {
183+ super ( name , '狗' ) ;
184+ }
185+
186+ speak ( ) {
187+ return `${ this . name } 汪汪叫` ;
188+ }
189+ }
190+
191+ const dog = new Dog ( '小黄' ) ;
192+ console . log ( dog . speak ( ) ) ;
193+ console . log ( '' ) ;
194+
195+ // 模块和导出示例(注释版本,因为这是单文件)
196+ console . log ( '📦 模块概念示例 (Module concept example):' ) ;
197+ // export const utilities = {
198+ // formatDate: (date) => date.toLocaleDateString('zh-CN'),
199+ // randomNumber: () => Math.floor(Math.random() * 100)
200+ // };
201+
202+ const utilities = {
203+ formatDate : ( date ) => date . toLocaleDateString ( 'zh-CN' ) ,
204+ randomNumber : ( ) => Math . floor ( Math . random ( ) * 100 )
205+ } ;
206+
207+ console . log ( `当前日期: ${ utilities . formatDate ( new Date ( ) ) } ` ) ;
208+ console . log ( `随机数: ${ utilities . randomNumber ( ) } ` ) ;
209+ console . log ( '' ) ;
210+
211+ // JSON 操作示例
212+ console . log ( '📄 JSON 操作示例 (JSON operations):' ) ;
213+ const data = {
214+ users : [
215+ { id : 1 , name : 'Alice' , active : true } ,
216+ { id : 2 , name : 'Bob' , active : false } ,
217+ { id : 3 , name : 'Charlie' , active : true }
218+ ]
219+ } ;
220+
221+ const jsonString = JSON . stringify ( data , null , 2 ) ;
222+ console . log ( 'JSON 字符串:' ) ;
223+ console . log ( jsonString ) ;
224+
225+ const parsedData = JSON . parse ( jsonString ) ;
226+ const activeUsers = parsedData . users . filter ( user => user . active ) ;
227+ console . log ( `活跃用户: ${ activeUsers . map ( u => u . name ) . join ( ', ' ) } ` ) ;
228+ console . log ( '' ) ;
229+
230+ // 错误处理示例
231+ console . log ( '🚨 错误处理示例 (Error handling):' ) ;
232+ try {
233+ const riskyOperation = ( ) => {
234+ const random = Math . random ( ) ;
235+ if ( random < 0.5 ) {
236+ throw new Error ( '随机错误发生了!' ) ;
237+ }
238+ return '操作成功!' ;
239+ } ;
240+
241+ const result2 = riskyOperation ( ) ;
242+ console . log ( result2 ) ;
243+ } catch ( error ) {
244+ console . log ( `捕获错误: ${ error . message } ` ) ;
245+ } finally {
246+ console . log ( '错误处理完成' ) ;
247+ }
248+ console . log ( '' ) ;
249+
250+ // 正则表达式示例
251+ console . log ( '🔤 正则表达式示例 (Regular expressions):' ) ;
252+ const text = 'CodeForge 是一个很棒的代码执行环境! Email: contact@codeforge.com' ;
253+ const emailRegex = / \b [ A - Z a - z 0 - 9 . _ % + - ] + @ [ A - Z a - z 0 - 9 . - ] + \. [ A - Z | a - z ] { 2 , } \b / g;
254+ const emails = text . match ( emailRegex ) ;
255+
256+ console . log ( `文本: ${ text } ` ) ;
257+ console . log ( `找到的邮箱: ${ emails ? emails . join ( ', ' ) : '无' } ` ) ;
258+ console . log ( '' ) ;
259+
260+ console . log ( '🎯 CodeForge JavaScript 代码执行完成!' ) ;
261+ console . log ( '🎯 CodeForge JavaScript execution completed!' ) ;
262+ console . log ( '' ) ;
263+ console . log ( '感谢使用 CodeForge 代码执行环境! 🚀' ) ;
264+ console . log ( 'Thank you for using CodeForge! 🚀' ) ;
0 commit comments