flatten(self, depth); return result; }; 在这个简化版的实现中,flatCustom方法接受一个可选的depth参数,表示要拉平的层数。如果没有指定depth,则默认值为1,这意味着只拉平数组的第一层。 flatten函数是一个递归函数,它遍历数组的每个元素。如果当前元素是一个数组并且depth大于0,则递归调用flatten函数,并将depth...
constarr1 = [1,2,3,[1,2,3,4,[2,3,4]]]; functionflattenDeep(arr1){ returnarr1.reduce((acc, val) =>{ returnArray.isArray(val) ? acc.concat(flattenDeep(val)) : acc.concat(val), [] } ); } flattenDeep(arr1); //输出结果 [1, 2, 3, 1, 2, 3, 4, 2, 3, 4] 最后...
使用 array.flatmap()最简单的方法是将包含项目的数组扁平化 const arrays = [[2, 4], [6]];const flatten = arrays.flatMap(item => item);console.log(flatten); // logs [2, 4, 6]1.2.3.事例地址：https://jsfiddle.net/dmitri_pavlutin/5rwvcz17/ 但是array.flatMap()除了简单的扁平化之外...
functionflatten_1(arr) {returnArray.prototype.concat.apply([], arr); }console.log(flatten_1(array)); 如果是多层嵌套的数组 functionflattenDeeper_1(arr){ return arr.toString().split(',').map((item) => parseInt(item));//return arr.join(',').split(',').map((item) => parseInt(item...
const flatten = arrays.flatMap(item => item); console.log(flatten); // logs [2, 4, 6] 1. 2. 3. 事例地址:https://jsfiddle.net/dmitri_pavlutin/5rwvcz17/ 但是array.flatMap()除了简单的扁平化之外,还可以做更多的事情。通过控制从回调中返回的数组项的数量: ...
const flatten = arrays.flatMap(item => item); console.log(flatten); // logs [2, 4, 6] 事例地址:https://jsfiddle.net/dmitri_pavlutin/5rwvcz17/ 但是array.flatMap()除了简单的扁平化之外,还可以做更多的事情。通过控制从回调中返回的数组项的数量: ...
Array Flatten Flatten nested arrays. 🚨 Notice: Code using node.js >= 11 should use the native Array.flat() method instead. 🚨 Installation npm install array-flatten --save Usage import { flatten } from "array-flatten"; flatten([1, [2, [3, [4, [5], 6], 7], 8], 9]); ...
This post will discuss how to flatten an array in JavaScript... The Array.flat() function is a built-in function that returns a new array with all sub-array elements concatenated into it recursively up to a specified depth.
How do you flatten array in javascript If you are given an array that contains literals, arrays and objects and you want to get all the values to one array. Here is the snippet using recursive function to attain that. function implode(arr) { var res = []; for (var i =0; i < ...
JavaScript Array flat()The flat() method creates a new array by flattening a nested array up to the specified depth. Example // 3 nested arrays let numbers = [1, 2, [3, 4, [5, 6, [7, 8]]]; // reducing nesting by flattening the array to depth 2 let flattenArray = numbers...