JS new表达式加密

// 1. new Array() let arr = new Array('apple', 'banana', 'cherry'); console.log(arr); // 输出: ['apple', 'banana', 'cherry'] // 2. new Boolean() let boolObj = new Boolean(false); console.log(boolObj.valueOf()); // 输出: false // 3. new Number() let numObj = new Number(42); console.log(numObj.toString()); // 输出: "42" // 4. new String() let strObj = new String("Hello"); console.log(strObj.toUpperCase()); // 输出: "HELLO" // 5. new Object() let obj = new Object({ name: "Alice", age: 25 }); console.log(obj.name); // 输出: Alice // 6. new Function() let func = new Function('a', 'b', 'return a + b'); console.log(func(3, 4)); // 输出: 7 // 7. new RegExp() let regex = new RegExp('\\d+', 'g'); console.log(regex.test('123 abc')); // 输出: true // 8. new Error() try { throw new Error("Something went wrong"); } catch (e) { console.log(e.message); // 输出: Something went wrong } // 9. new Promise() let promise = new Promise((resolve, reject) => resolve('Success!')); promise.then(value => console.log(value)); // 输出: Success! // 10. new Map() let map = new Map([['key1', 'value1'], ['key2', 'value2']]); console.log(map.get('key1')); // 输出: value1 // 11. new Set() let set = new Set(['red', 'green', 'blue']); set.add('yellow'); console.log(set.has('yellow')); // 输出: true // 12. new WeakMap() let weakMap = new WeakMap(); let objKey = {}; weakMap.set(objKey, "value"); console.log(weakMap.get(objKey)); // 输出: value // 13. new WeakSet() let weakSet = new WeakSet(); let objForWeakSet = {}; weakSet.add(objForWeakSet); console.log(weakSet.has(objForWeakSet)); // 输出: true // 14. new Date() let date = new Date(); console.log("当前日期和时间: " + date.toString()); // 创建一个表示特定日期和时间的Date对象 let specificDate = new Date(2024, 11, 25, 18, 0, 0); // 注意：月份是从0开始计数的，即11代表十二月 console.log("指定日期和时间 (年, 月-1, 日, 小时, 分钟, 秒): " + specificDate.toISOString()); new表达式加密