*/functionconvertEncoding(input:string,fromEncoding:string,toEncoding:string):string{// 使用 iconv-lite 将字符串转换为 Bufferconstbuffer=iconv.encode(input,fromEncoding);// 将 Buffer 转换为目标编码的字符串constconvertedString=iconv.decode(buffer,toEncoding);returnconvertedString;}// 示例:将 UTF-8 ...
The JSON.parse() method is used to parse a given string of JSON text and convert it to a JSON object. This is plain JavaScript that also works in TypeScript. const employee = '{"name": "Franc","department":"sales"}'; console.log(typeof employee); let jsonObject = JSON.parse(emplo...
通过编写自定义函数,你可以更灵活地控制类型转换的细节,并处理复杂的转换需求。 function convertStringToNumber(input: string): number {// 实现自定义的字符串转数字逻辑return parseFloat(input);}const stringValue: string = "3.14";const numberValue: number = convertStringToNumber(stringValue); 在上述代码中,...
创建一个新的Typescript文件,例如jsonToString.ts。 在文件中引入JSON对象数组,并声明一个函数来将其转换为字符串数组。代码如下:const jsonArr: object[] = [ { name: 'John', age: 25 }, { name: 'Jane', age: 30 }, { name: 'Bob', age: 35 } ]; function convertToJsonStringArray(jsonAr...
function convertStringToNumber(input: string): number { // 实现自定义的字符串转数字逻辑 return parseFloat(input); } const stringValue: string = "3.14"; const numberValue: number = convertStringToNumber(stringValue); 1. 2. 3. 4. 5.
/** * Convert string literal type to lowercase */ type Lowercase<S extends string> = intrinsic; 变小写 使用举例 export type StudentSexType = 'MALE' | 'FEMALE' const studentSex: Lowercase<StudentSexType> = '' Capitalize(首字母大写) /** * Convert first character of string literal type...
而在 TypeScript 中，也可以相应地表达不同类型的参数和返回值的函数，如下代码所示：function convert(x: string | number | null): string | number | -1 {if (typeof x === 'string') {return Number(x);}if (typeof x === 'number') {return String(x);}return -1;}const x1 = convert('...
function decodeBinaryData(binaryDataString: string): Uint8Array { // 将二进制数据字符串转换为字节数组 const byteArray = atob(binaryDataString); // 将字节数组转换为十六进制字符串 const hexString = Array.from(byteArray, byte => byte.charCodeAt(0).toString(16)).join(''); // 将十六进制字符...
Convert to Template String Call Hierarchy Breaking Changes Type-Only Imports and Exports This feature is something most users may never have to think about; however, if you’ve hit issues here, it might be of interest (especially when compiling under--isolatedModules, ourtranspileModuleAPI, or Ba...
: string): void; function refEventEmitter(event: string, callback: () => void): void; function refEventEmitter(callback: () => void): void; function refEventEmitter( ...args: | [event?: string] | [ event: string, callback: () => unknown, ] | [callback: () => unknown] ):...