可以使用Array.isArray(value)方法来判断某个值是不是数组,如果传入的值是一个数组的话,它会返回 true。 Array.isArray([' ', ' ', ' ', ' ', ' ', ' ', ' ']); // returns true Array.isArray(' '); // returns false Array.isArray({ 'tomato': ' '}); // returns false Array.is...
TL;DR —Sort an array of numbers in ascending order using: myArray.sort((a, b) => a - b); Arraysin JavaScript are data structures consisting of a collection of data items. Because Javascript is not a typed language, Javascript arrays can contain different types of elements -strings,numbe...
// Sort array of numbers in ascending order let numbers = [ 100, 14, 25, 5, 101, 33 ]; numbers.sort(function(a,b){ if(a < b) { return -1; } else if(a > b) { return 1; } else { return 0; } }); console.log(numbers); // [ 5, 14, 25, 33, 100, 101 ] 使用箭...
// numeric sorting// define arrayvarpriceList = [1000,50,2,7,14];// sort() using function expression// ascending order priceList.sort(function(a, b){returna - b; }); // Output: Ascending - 2,7,14,50,1000console.log("Ascending - "+ priceList);// sort() using arrow function ...
letscores = [9,80,10,20,5,70];// sort numbers in ascending orderscores.sort((a, b) =>a - b); console.log(scores); 输出: [5,9,10,20,70,80] 要以降序对数字数组进行排序,您只需要反转比较函数中的逻辑,如...
points.sort(function(a, b){returnb-a}); Try it Yourself » Find the lowest value: // Create an Array constpoints = [40,100,1,5,25,10]; // Sort the numbers in ascending order points.sort(function(a, b){returna-b});
function ascendingComp(a, b){ return (a-b); } 1. 2. 3. 把比较器函数传入 sort() 方法: numbers.sort(ascendingComp); // retruns [1, 5, 9, 10, 13, 23, 37, 56, 100] /* 也可以使用行内函数: numbers.sort(function(a, b) { ...
sort() Sorts the elements alphabetically in strings and ascending order in numbers. slice() Selects part of an array and returns it as a new array. splice() Removes or replaces existing elements and/or adds new elements. To learn more, visit JavaScript Array Methods. More on Javascript Arr...
Write a function that takes an array (a) and a value (n) as argument Return the nth element of 'a' 我的提交(作者答案) functionmyFunction(a, n) {returna[n -1];} 涉及知识(访问数组元素)# 访问数组元素# 数组的索引是从0开始的,第一个元素的索引为0,最后一个元素的索引等于该数组的length...
JavaScript – Sort a Numeric Array To sort an array of numbers in JavaScript, call sort() method on this numeric array. sort() method sorts the array in-place and also returns the sorted array, where the numbers are sorted in ascending order. ...