arrays Questions

Javascript – How to iterate multiple arrays into table rows?

September 3, 2023
Tezcatlipoca
4 Answers

var MyArray = [['Cats', ['Lion','Tiger','Leopard']], ['Dogs', ['Wolf','Pug']], ['Reptiles', ['Snake','Gecko','Lizard','Triceratops']]]; var MyTable = document.getElementById("results"); const headerRow = document.createElement("tr"); MyTable.appendChild(headerRow); for(var i=0;i<MyArray.length;i++) { const newCell = document.createElement("th"); newCell.textContent = MyArray[i][0]; headerRow.appendChild(newCell); for (const datum of MyArray[i][1]) { const newRow = document.createElement("tr"); MyTable.appendChild(newRow);…

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Javascript – Fetch and display json object from api in the project

September 1, 2023
Mac S
3 Answers

import React, { useEffect, useState } from "react"; import { v4 as uuidv4 } from "uuid"; export default function Aapi() { const [record, setRecords] = useState([]); var arr = []; useEffect(() => { fetch("https://ipinfo.io/json?token=93ogbcdhee0a74") .then((response) => response.json()) .then((jsonResponse) => {…

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Jsonata filter group by parent element

September 1, 2023
Amit Chauhan
2 Answers

I have json object as follows {"resources":[{"srno":"1","name":"name1","projects":[{"prjname":"abc"}]},{"srno":"1","name":"name1","projects":[{"prjname":"def"}]},{"srno":"2","name":"name2","projects":[{"prjname":"abc"}]},{"srno":"4","name":"name4","projects":[{"prjname":"prq"}]},{"srno":"4","name":"name4","projects":[{"prjname":"stu"}]},{"srno":"4","name":"name4","projects":[{"prjname":"uvw"}]},{"srno":"5","name":"name5"}]} How can I get resources grouped by id,name - each of that should contain list of projects? basically,flattened to structured i.e. {"resources":[{"srno":"1","name":"name1","projects":[{"prjname":"abc"},{"prjname":"def"}]},{"srno":"2","name":"name2","projects":[{"prjname":"abc"}]},{"srno":"4","name":"name4","projects":[{"prjname":"prq"},{"prjname":"stu"},{"prjname":"uvw"}]},{"srno":"5","name":"name5"}]} can someone share jsonata expression to create same

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How do I map an array and change the color of the text of just the item I tap on using React Native?

September 1, 2023
Tony
2 Answers

How do I change the color of a single item from a mapped array? My code below will change the color of all the items in the array to green. I want just the item I tap on to turn…

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Javascript – How to split/create an array on repeated duplicated key

September 1, 2023
Arun Krishna
4 Answers

const test = [{a:1},{b:2},{c:3},{d:4},{a:5},{b:6},{c:7},{a:8},{c:9}] Need output like below, On repeat of key "a", need to create new array till the same key repeat [{a:1},{b:2},{c:3},{d:4}] [{a:5},{b:6},{c:7}] [{a:8},{c:9}]

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Html – array.reverse() in my *ngFor don't work in production

August 31, 2023
Victor Nardella
2 Answers

I don't know why, when I interact with my textarea, my _messagesList is reverse ASC and DESC everytime. <div class="chat__messages"> <div *ngFor="let message of authService._messagesList.reverse()" [@fadeInOut] class="message" [ngClass]="session.User.id == message.Id_Sender ? 'myMsg' : 'otherMsg'"> <p>{{message.Content}}</p> <span>{{message.createdAt | date: "HH:mm"}}</span> </div>…

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Javascript – How to validate an array of hex colors is correct and discard the wrong ones?

August 31, 2023
Richard
4 Answers

Currently, I only check if it's not null or undefined and I want to make sure that each hex color is correct otherwise discard the wrong hex and move to the next. If the format is completely wrong then just…

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Javascript – How an I log the nth element in an array?

August 31, 2023
Dustin Faust
2 Answers

I have an assignment to push these to the array then take one away. I'm having issue figuring out how to console log the third property of this array. I tried a few different approaches but no dice. I'm new…

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Javascript – How to sort an array of objects with null properties

August 31, 2023
John
2 Answers

i have the following array "data": { "risks": [ { "id": "22", "name": true, "surname": 0.5, "age": 0.75, "heigth": 50, "num1": [], "num2": [] }, { "id": "55", "name": true, "surname": 0.5, "age": 0.75, "heigth": 50, "num1": [], "num2": []…

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Javascript – sorting an array with unique scenario

August 31, 2023
Chaitenya Rajurkar
2 Answers

I have a problem with sorting arrays in javascript: My original array: let orginalArray = ["Apple","apple","Acrobat","Account","account","Banana","banana","carrot","Carrot",1,2]; Looking for an output like this: sortedArray = ["Account","Acrobat","Apple","account","apple","Banana","banana","Carrot","carrot",1,2]; This is what I tried: let sortedArray = orginalArray; sortedArray.sort((a, b) => a[keyname].toString().localeCompare(b[keyname].toString(),'en', { caseFirst:…

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