数组中两个相邻数字之间的差异

本文介绍了数组中两个相邻数字之间的差异的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我开始冒险使用AngularJS，我有一个问题，是否可以计算两个数字之间的差异？

I start my adventure with AngularJS and I have a question, is it possible to calculate the difference between two numbers?

从SQL中提取数据后 - 我得到了一个像这样的表格，我希望在第1天< -2,2< -3等等之间获得访问之间的差异。

After extracting data from SQL - I get a table like this, I would like to receive a difference between visits on days 1 <- 2, 2 <-3, etc.

推荐答案

我认为它在简单的javascript范围内。

I think its in the scope of simple javascript.

如果您的数据包含在数组中，只需对其进行简单的迭代，并将当天访问与前一天的访问进行比较。

If you have your data in an array just use a simple iteration on it and compare the visit of current day to the visits from previous day.

一个非常简单的解决方案可能是：

A very simple solution might be:

var visitsArr = [38,29,18,29,28,18,24]; checkVisitsDiff(visitsArr); function checkVisitsDiff(arr){ //Input validation check if(!arr || arr.length <2){ throw "Bad input!"; } //If input is ok - Start from second element for(var i=1; i<arr.length; i++){ var currentElement = arr[i]; var previousElement = arr[i-1]; console.log("The difference from visit " + i + " to visit " +(i-1) + " is: " +(currentElement-previousElement)); } }

我希望你提出这个问题。

I hope this what you asked.