arrays Questions

Javascript – TypeError: "name" is read-only ,when trying to update the value

June 23, 2023
Samathi kisalka
2 Answers

I use this handleDepartmentChange to change the input value when updating. const handleDepartmentChange = (companyIndex, departmentIndex, e) => { const newCompanies = [...companies]; newCompanies[companyIndex].children[departmentIndex].name = e.target.value; console.log(newCompanies[companyIndex].children[departmentIndex].name); setCompanies(newCompanies); }; For that I use the following way <div style={{ display: "flex"…

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Javascript – Error when Updating : can't define array index property past the end of an array with non-writable length

June 23, 2023
Samathi kisalka
2 Answers

I can add or delete when I haven't saved the data to database. Once it's saved and I want to update them either by deleting them or adding a new value. It gives this error "can't define array index property…

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How can I push to an array thats inside an object's element in Javascript

June 23, 2023
Ethan Gordon
4 Answers

I have the following object: var watchObject = {}; Here is the following code I'm trying to accomplish; if it exists in the object I want to append it and if it doesn't exist I want to create a new…

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How to Insert key- value pair in a multidimensional array in php

June 22, 2023
Bashabi
2 Answers

I have this array $totalAgeChecks[] = ( [0] => Array ( [AgeCheck] => 0 ) [1] => Array ( [AgeCheck] => 1 ) ) I want to insert another value with each element so that the final array becomes like…

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How to format a particular value in array of object in javascript?

June 22, 2023
Raj
2 Answers

Hi I am getting some data from api and one particular value need to be in proper way. Can you please provide some kind of solution for this ? const data = [ { state: 'Test-1.5', response: "ABC" }, {…

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Javascript – Typescript: How can I return the first object in an array which has a unique key value pair from any objects in a different array?

June 22, 2023
Devstar34
2 Answers

I want to return the first item in an array of objects that does not have a matching id to any object in a separate array. For example, arrary1 = [ { name: "object1", id: 1, coordinates: undefined} { name:…

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group data using a vector of keys in JavaScript, add empty array where key is not in data

June 22, 2023
MayaGans
2 Answers

I'd like to use this vector of keys const vec_of_vals = ["one", "two", "three", "four"] to group and filter an array of objects const data = [ {grade: "one"}, {grade: "one"}, {grade: "one"}, {grade: "two"}, {grade: "four"}, {grade: "four"}, {grade:…

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Reactjs – Information mapped from array not showing up on table

June 21, 2023
NS1
2 Answers

Im trying to create a table that will show the information for gpu chips layed out on a table after being mapped from the corresponding array. Im having trouble getting the info to show even though i dont see any…

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Javascript – Array conversion manipulation and formatting

June 21, 2023
pj013
3 Answers

I have the following array: [ { "level": "level3", "category": "car" }, { "level": "level1", "category": "bike" }, { "level": "level2", "category": "car" }, { "level": "level5", "category": "bike" } ] I need to convert this to the following object:…

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Javascript – How to extract specific from an object

June 21, 2023
Ger
3 Answers

How can I remove an property from an array? I wish to remove the property that includes: someObject = { number: '1', month: 'march', year: '2023' } And I have an array: someArray = ['month', 'year'] or a string 'month,…

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