isArray(cur)){ return [...acc , ...flatten(cur)] } else { return [...acc,cur] } },[]) } 多维数组:while + some 只要数组中还有数组,就使用 concat 给这个数组降维。这个方法可以不使用递归 代码语言:javascript 代码运行次数:0 运行 AI代码解释 function flatten(
JavaScript Array at()ES2022 intoduced the array method at():Examples Get the third element of fruits using at(): const fruits = ["Banana", "Orange", "Apple", "Mango"]; let fruit = fruits.at(2); Try it Yourself » Get the third element of fruits using []: const fruits = ...
Array 类型 数组是 Array 类型。然而,因为数组是一个集合,我们还需要指定在数组中的元素的类型。我们通过Array<type>ortype[]语法为数组内的元素指定类型 代码语言:javascript 代码运行次数:0 运行 AI代码解释 |
He read "The Cremation of Sam McGee" by R.W. Service. 要在字符串中插入反斜杠字面量,必须转义反斜杠。例如,要把文件路径c:\temp赋值给一个字符串,可以采用如下方式: js consthome="c:\\temp"; 也可以在换行之前加上反斜杠以转义换行。这样反斜杠和换行都不会出现在字符串的值中。
In JavaScript index starts from zero. JavaScript provides a set of built-in functions forcontaining,joining,slicing,reversing,inserting,merging,reducing,clearing, andcloningarrays. You can also get asumof array elements, convertstring to array, convert anarray to string, and convert anarray to ...
The same goes for any other part of a suite or test-case title, --grep users would be valid as well, or even --grep GET. describe('api', function() { describe('GET /api/users', function() { it('respond with an array of users', function() { // ... }); }); }); ...
import { getUniqueName } from "@aws-doc-sdk-examples/lib/utils/util-string.js"; import { dirnameFromMetaUrl } from "@aws-doc-sdk-examples/lib/utils/util-fs.js"; import { chunkArray } from "@aws-doc-sdk-examples/lib/utils/util-array.js"; const dirname = dirnameFrom...
内建对象(built-in object):比如Array(),Array.prototype.__proto__指向什么?Array.prototype也是一个对象,对象就是由 Object() 这个构造函数创建的,因此Array.prototype.__proto__ === Object.prototype //true,或者也可以这么理解,所有的内建对象都是由Object()创建而来。
/*** Represents a book in the catalog.* @public*/export class Book {/*** The title of the book.* @internal*/public get _title(): string;/*** The author of the book.*/public get author(): string;}; 1.2.11@label 内联{@label} 标记用于标记声明,以便可以使用 TSDoc 声明引用表示法...
for creating new array values. Anarray literal is a pair of(一对,一副) square brackets surrounding zero or more values separated by commas. An array literal can appear anywhere an expression can appear. The first value will get the property name '0', the second value will get the property...