letnestedArray=[ 1,2,[3,4,[5,6]]];letflatArray=nestedArray.flat();console.log(flatArray);//输出: [1, 2, 3, 4, [5, 6]]//指定深度为2letdeeplyNestedArray=[1,2,[ 3,4,[5,6]]];letdeeplyFlatArray=deeplyNestedArray.flat(2);console.log(deeplyFlatArray);//输出: [1, 2, 3...
It was always complicated to flatten an array in JS. Not anymore! ES2019 introduced a new method that flattens arrays with Array.flat()...
function flatten(arr, depth = 1) { if (!Array.isArray(arr)) { return [arr]; // Handle non-array inputs gracefully } if (depth 0) { return arr; // Stop
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap varnew_array = arr.flatMap(functioncallback(currentValue[, index[, array]]) {// return element for new_array}[, thisArg]) flat https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/G...
js array flat all in one array flat flatMap flatMap > flat + map var new_array = arr.flatMap(function callback(currentValue[, index[, array]]) { // return element for new_array }[, thisArg]) 1. 2. 3. flat var newArray = arr.flat([depth]); ...
js array flat all in one array flat flatMap flatMap > flat + map https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flatMap varnew_array=arr.flatMap(functioncallback(currentValue[,index[,array]]){ ...
Array Tutorials: Array Tutorial Array Const Basic Array Methods Array Search Methods Array Sort Methods Array Iteration Methods Browser Support JavaScript Arrayflat()is supported in all modern browsers since January 2020: Chrome 69Edge 79Firefox 62Safari 12Opera 56 ...
js中flat方法的实现原理 Array.prototype.flat() 在Array的显示原型下有一个flat方法,可以将多维数组,降维,传的参数是多少就降多少维 let arr = [1, [2, 3, [4, 5, [12, 3, "zs"], 7, [8, 9, [10, 11, [1, 2, [3, 4]]]; console...
一、功能概述 1、Object.fromEntries 将二维数组或者map转换成对象; 2、trimStart 和 trimEnd 去除字符串前后的空白字符; 3、Array.prototype.flat 与 flatMap 将多维数组降维; 4、Symbol.prototype.description 获取Symbol的字符串描述; 二、Object.fromEntries ...
find_all elements in an array that match a condition? I've an array of hash entries, and want to filter based on a paramater passed into the function. If there are three values in the hash, A, B, and C, I want to do something similar to: find all where A... ...