log(uniqueValues); // 输出 [1, 2, 3, 4, 5, 6] 使用ES6的Set数据结构的方法: 代码语言:javascript 复制 function getUniqueValues(arr) { var flatArray = arr.flat(); // 将多维数组展开为一维数组 var uniqueValues = Array.from(new Set(flatArray)); // 使用Set去除重复值,并转换回数组形式...
Write a JavaScript program to find all the unique values in a set of numbers. Create a new Set() from the given array to discard duplicated values. Use the spread operator (...) to convert it back to an array Sample Solution: JavaScript Code : // Function to return an array with uni...
const uniqueNumbers = numbers.filter((item, index, array) => array.indexOf(item) === index); console.log(uniqueNumbers); // 输出: [1, 2, 3, 4, 5] 这种方法的原理是利用filter函数遍历数组,同时检查当前元素的索引是否与indexOf方法返回的第一个索引相匹配。如果匹配,则说明当前元素是唯一的;否...
当 indexOf() 返回 -1 时,我们知道该值尚未出现在我们的唯一数组中。 var unique = [];for(var i=0; i < items.length; i++) {if(unique.indexOf(items[i]) == -1) {unique.push(items[i]);}} 2、.filter() 与 .indexOf() 第二个序...
45. Unique Values in Array Write a JavaScript program to find all the unique values in a set of numbers. Test Data: [1, 2, 2, 3, 4, 4, 5] [1, 2, 3, 4, 5] [1, -2, -2, 3, 4, -5, -6, -5] Expected Output: ...
uniqueValues Method uniqueValues(params){Promise<UniqueValuesResult>} Returns an object containing an array of unique values queried from a given field (or values returned from an expression) in a Layer along with the total count of features that belong to the given category. Specifica...
步骤1:通过javascript中的three dots将所有数组合并到一个数组中。 步骤2:使用Array.reduce返回结果。 let array1 = [ { categoryName: "category 1" }, { categoryName: "category 2" }, { categoryName: "category 3" }, { categoryName: "category 4" }, ]; let array5 = [ { categoryName: "catego...
我们可以使用 Array.sort() 和 Array.join() 方法组合起来检查两个数组是否包含相同的值。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 constcontainSameValues=(arr1,arr2)=>arr1.sort().join(',')===arr2.sort().join(','); 五、工具函数 ...
let uniqueArray = [...newSet([1, 2, 3, 3,3,"school","school",'ball',false,false,true,true])];>>> [1, 2, 3,"school", "ball", false, true]筛选数字数组 JavaScript数组带有内置的筛选方法。默认情况下，该方法将数组元素转换为字符串，并对其进行字典排序。在对数字数组进行排序时可能会...
Different methods to get unique array in JavaScript Method-1: Use theSetobject Within the JavaScript environment, there is a native and built-in object calledSet, which allows us to store unique values of any data type. The collections of values within aSetobject may only occur once, and the...