I have an array from strings and numbers. I need to sort the numbers or better to extract only the numbers in another array. Here is the example: I need to make it like this I used split(‘ ‘) method to separate them with comma but don’t know how to filter them for JS they all are strings. An…
Tag: arrays
Using variable in vue data object for nested loop calculation causes code to break
So i have an object that i want to use in performing some calculations on the sub-objects which it contains before rendering inside a span tag like so: <span>getTotal(costing_day)</span> getTotal is a method that does the following: And it makes use of the total property declared in my vue data ob…
Show fetch results in render return() in React.js
My question is about how to show array results in render return(). I made a fetch to the API and now I get results that get stored in a array. I need to show this results but I tried with a for{} inside the return and it doesn’t work, and I also tried with .map and the map is undefined.
JavaScript: Looping through an array of objects and filtering specific properties/attributes
I’m trying to loop through an array and return just the addresses and the number of packages and then having the total number of packages in the array added up. Problem is, when I write this all in codepen.io, it tells me that each name attribute is having an unexpected identifier error. I know I’…
Map default value
I’m looking for something like default value for Map. Now the result is Undefined but I want to get empty array []. Answer First of all to answer the question regarding the standard Map: Javascript Map as proposed in ECMAScript 2015 does not include a setter for default values. This, however, does not r…
Array Left Rotation in Javascript will log to console but not return
I’m working on the array left rotation on Hackerrank. The solution that I have will console.log the array containing the correct result, but will not work using return. Here’s the detail from their site – “Print a single line of n space-separated integers denoting the final state of th…
Accessing array inside of another array to use v-for
I have an array – ‘items’ of objects and each of them contains an array of more objects. I would like to access the second array ‘productPrices’ to use v-for. But items.productPrices doesn’t work for me. Should I create double loop somehow? HTML: JS: Here is a fiddle. Answe…
Find matching values in two arrays
I want to find the matching values between two arrays and create a json array setting true if the values matched or false if they didn’t. I know, that the values in the secondArray will always match some values from the first array and that it will always be smaller, because the secondArray is created b…
Find duplicate values in objects with Javascript
I’ve been trying to work out a problem I’m having. I have an array with objects in it, like this: I want to get the objects that have duplicate values in them and based on what values to search for. I.e , I want to get the object that has a duplicate value “name” and “age” …
Vue – Loop through an array of objects, and highlight the selected item on click
I have an array of objects which holds data, which I output to the DOM using map. Each item in the list, has a @click event listener. When you click on one of the items, I want it to be highlighted by way of adding a css class, for example ‘hover’. So basically it should work like a menu system.