I’ve created two functions. One to create 5 random numbers to push them into an array. And another one to sum up the numbers. The random number generator is working and making an array perfectly. But the sum is not accurate. I’m unable to find where the problem is. Answer Because you are logging a…
Tag: arrays
How to show the sum of the values for the same item and for different dates in react.js
I have the array: And I want to be able to display the data as shown in the table: ITEM 202001 202002 TOTAL I1 100 200 300 I2 – 300 300 TOTAL 100 500 600 I tried to show the values of each date for the same item, now I need the above to calculate the subtotals and the total.
Write a function that takes in an array of integers, and a string that will be either ‘even’ or ‘odd’
Im working on a problem in javascript where I am supposed to write a function that takes in an array of integers, and a string that will be either ‘even’ or ‘odd’. The function will count how many times 4 even or 4 odd numbers show up in a row. For example: so far this is where I am at…
Push object to array in mongodb nodejs [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question This is my mongodb collection. I want to push object to array with findOneAndUpdate(). This …
how do i put what is inputted with buttons through a function back to an index.html?
this is what ive got, the item pushes to the array when typed in to the input boxes and the button is clicked to submit, i just cant seem to get it displayed on the html not sure where ive went wrong please help, i can see that the array is outputted in the console when typed into the buttons
How to split each element of a string array into different categories?
I am using node.js to fetch data from a website. Once I have that fetched data I want to insert into a mySQL database. Fetching the the url gives me a json dump of information. After formatting the string, I am using an array to store my data. Below is an example of my output: I want to split each
How to dynamically map an array within another array in React?
I’m building a table of content using React. I’m calling my database to fetch each array(which are always different depending on query). I would like to render each child array when I click on the parent item. Here’s conceptually what I want: Here’s my code: Right now, when I click on …
Change colour on every iteration of forEach loop in javascript?
I have a function that changes the colour of an element briefly, then changes it back to the original colour. Depending on the level you’re at (it’s a puzzle game), a forEach loop then runs this function for a a certain number of times (more at higher levels). Currently the colour the element chan…
How to subtract these two arrays
I am trying to subtract two matrices, I have a function that takes in those matrices and returns a new matrix that has been subtracted. I get this error in node.js: TypeError: (intermediate value).map is not a function This is the function I use from my main file (note: I already have an instance of the class…
Vue add new value to array
I am new to VUE and for one project I am trying to update an array passing the object. I have two button which is called BUTTON 1 and BUTTON 2. If you click on BUTTON 1 then it will set an object to list[] using this.$set. But when BUTTON 2 is pressed it should update with the new value