JavaScript编号拆分为单个数字 [英] JavaScript Number Split into individual digits

问题描述

您好我正在尝试解决数学问题45或111然后将数字分成单独的数字，例如4 5或1 1 1.然后，我将每个数字保存到var以运行方法。有没有人没有如何将数字分成单个数字。

Hi I am trying to solve a math problem where I take a number e.g. 45, or 111 and then split the number into separate digits e.g. 4 5 or 1 1 1. I will then save each number to a var to run a method on. Does anyone no how to split a number into indivdual digitals.

例如我有一个在数组上运行的循环：

For example I have a loop that runs on an array :

for (var i = 0; i < range.length; i++) {
var n = range[i];   
}

我希望将每个数字拆分并将它们加在一起？

For each number I would like to split its digits and add them together ?

推荐答案

var number = 12354987,
    output = [],
    sNumber = number.toString();

for (var i = 0, len = sNumber.length; i < len; i += 1) {
    output.push(+sNumber.charAt(i));
}

console.log(output);

/* Outputs:
 *
 * [1, 2, 3, 5, 4, 9, 8, 7]
 */ 

更新：计算金额

for (var i = 0, sum = 0; i < output.length; sum += output[i++]);
console.log(sum);

/*
 * Outputs: 39
 */

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