typescript 导出数据到csv TypeScript该部分文档地址 基本类型 boolean number string Array Tuple enum any void null & undefined never object Boolean let a: boolean = false; 1. Number 与JS同,所有数值都为浮点,支持多种进制。 let decimal: number = 6; let hex: number = 0xf00d;//十六进制 let ...
有点儿java中泛型编程的意思 let arr2: Array<number> // 上面的arr1和arr2数组中的数值只能是一种类型,下面是一种联合写法 let arr3: (number | string)[] // 也可以这样写: let arr4: Array<number | string>
简介JavaScript 数组在 TypeScript 里面分成两种类型,分别是: 数组(array) 元组(tuple) TypeScript 数组有一个根本特征:所有成员的类型必须相同...let arr: number[] = [1, 2, 3]; let foo = arr[3]; // 正确 上面示例中,变量foo的值是一个不存在的数组成员,TypeScript 并不会报错。...TypeScript 允...
let str: string = '黄刀小五'; Array - 数组 数组共有两种定义方式:Array<T>或T[](T为该数组每项的元素类型) let numArr: number[] = [1, 2, 3]; let numArr: Array<number> = [1, 2, 3]; Tuple - 元组 👺 特点: <数组>, <长度已知>, <每项元素类型不尽相同> 😼 就是一个给每...
{ bookType: 'xlsx', type: 'array' }); const blob = new Blob([excelBuffer], { type: 'application/octet-stream' }); // 创建下载链接 const url = window.URL.createObjectURL(blob); const a = document.createElement('a'); a.href = url; a.download = 'data.xlsx'; document.body....
Now, we can adjust the QuestionData interface so that it includes an array of answers: cs export interface QuestionData { questionId: number; title: string; content: string; userName: string; created: Date; answers: AnswerData[]; } 注意answers属性的类型注释中的方括号。 重要提示 类型后的方...
interface MyInterface { key1: boolean; key2: boolean;}const myObj: MyInterface = { key1: true, key2: false,}const myArray: Array<keyof MyInterface> = ['key1', 'key2'];// or ...const myOtherArray: Array<keyof typeof myObj> = ['key1', 'key2']; 你也可以这样倒退 const my...
*@param{Array}initList- 表格的数据 *@param{string}name- 下载文件的名字(不用带.csv) */constTableToCsv= (initColumns, initList, name ='表格') => {letstr ='';letarr = [];letkeyArr = []; initColumns.forEach((item) =>{
array-find-index, graphql-type-json, victory, imagemin-svgo, filesystem, json2csv, osenv, postcss-modules-extract-imports, is-finite, console-log-level, imagemin-gifsicle, eslint-plugin-prettier, google-libphonenumber, postcss-modules-local-by-default, postcss-modules-scope, interpret, raf, reac...
// Converts your Array<Object> to a CsvOutput string based on the configsconstcsv=generateCsv(csvConfig)(mockData);constfilename=`${csvConfig.filename}.csv`;constcsvBuffer=newUint8Array(Buffer.from(asString(csv)));// Write the csv file to diskwriteFile(filename,csvBuffer,(err)=>{if(...