Use the reduce() Method to Sum an Array in a JavaScript ArrayThe reduce() method loops over the array and calls the reducer function to store the value of array computation by the function in an accumulator. An accumulator is a variable remembered throughout all iterations to store the ...
function arraySum(arr) { var sum = 0; if (Object.prototype.toString.call(arr) === '[object Array]') { for (var i = 0; i < arr.length; i++) { if (typeof arr[i] === "number" && !isNaN(arr[i])) { sum += arr[i]; } else { va...
To calculate the sum of an array of objects, the “for” loop and “reduce()” method of the array class can be utilized in JavaScript.
百度试题 结果1 题目析下面的JavaScript代码段: a=new Array(2,3,4,5,6); sum=0; for(I=1;I<;I++) sum+=a[I]; document. write(sum) 输出结果是(b)。(选择一项) A. 20 B. 18 C. 14 D. 12 相关知识点: 试题来源: 解析 b) 18 ...
Finding sum of a range in an array JavaScript - We are required to write an Array function (functions that lives on Array.prototype object). The function should take in a start index and an end index and it should sum all the elements from start index to
结果1 题目 分析下面的 JavaScript 代码段 a=new Array(2,4,4,5,6); sum=0; for(i=1;i. length;i )sum =a[i]; document. write(sum); 输出结果是 (). A. 21 B. 19 C. 2 , 4 , 4 , 5 , 6 D. 24456 相关知识点: 试题来源: 解析 B 反馈 收藏 ...
Use thereduceFunction to Sum the Values of an Array of Objects in JavaScript We can create a function calledsum()and use thereduce()method to reduce the array to a single value, which is the sum of all the values in the array.
百度试题 题目分析下面的JavaScript代码段 a=new Array(2,4,4,5,6); sum=0; for(i=0;i sum +=a[i]; document.write(sum); 输出结果是相关知识点: 试题来源: 解析 21 反馈 收藏
分析下面的JavaScript代码段 a=new Array(2,3,4,5,6); sum=0; for(i=1;iA.20B.23456C.18D.2,3,4,5,6
百度试题 结果1 题目分析下面的javascript代码段 a=new Array(2,3,4,5,6) sum=0;for(var i=1;i——[单选题] A. 20 B. 18 C. 14 D. 12 相关知识点: 试题来源: 解析 B 反馈 收藏