What is the best way to verify if all the elements in an array of strings are present within the array?

Question

What is the best way to verify if all the elements in an array of strings are present within the array?

I am working with two arrays of strings, array1 and array2, that I need to compare. I want to find a way to check if all elements from array2 are present in the elements of array1, and then create a new array based on this comparison. I believe using filter + includes is the right approach for my scenario. I came across a helpful answer related to my question.

To clarify, here is an example of what I am trying to achieve and what the expected result should look like:

array1 [ 'apple_mango_banana', 'mango_apple_banana', 'apple_banana' ]
array2 [ 'apple', 'mango' ]

result ['apple_mango_banana', 'mango_apple_banana' ]

javascript arrays

Answer 1

Answer №1

You seemed to mention an array of strings, but your code appears to be handling an array of arrays of strings instead. If we assume it's the latter case, would you approach it like this:

let array = [['apple', 'mango', 'banana'], ['mango', 'apple', 'banana'], ['apple', 'banana']]
let comp = ['apple', 'mango']
let ans = []

for (el of array) {
    if (comp.every(y => el.includes(y))) {
        ans.push(el)
    }
}

console.log(ans)

There may be a more concise way to achieve this, but this method gets the job done.

Answer 2

You seemed to mention an array of strings, but your code appears to be handling an array of arrays of strings instead. If we assume it's the latter case, would you approach it like this:

let array = [['apple', 'mango', 'banana'], ['mango', 'apple', 'banana'], ['apple', 'banana']]
let comp = ['apple', 'mango']
let ans = []

for (el of array) {
    if (comp.every(y => el.includes(y))) {
        ans.push(el)
    }
}

console.log(ans)

There may be a more concise way to achieve this, but this method gets the job done.

Answer 3

Answer №2

const array1 = [ 'apple_mango_banana', 'mango_apple_banana', 'apple_banana' ]
const array2 = [ 'apple', 'mango' ]

const goal = [ 'apple_mango_banana', 'mango_apple_banana' ]

let result = array1.filter(item1 => array2.every(item2 => item1.includes(item2)))

console.log(result)

Answer 4

const array1 = [ 'apple_mango_banana', 'mango_apple_banana', 'apple_banana' ]
const array2 = [ 'apple', 'mango' ]

const goal = [ 'apple_mango_banana', 'mango_apple_banana' ]

let result = array1.filter(item1 => array2.every(item2 => item1.includes(item2)))

console.log(result)

What is the best way to verify if all the elements in an array of strings are present within the array?

Answer №1

Answer №2

Similar questions

Aborting HTTP POST requests in IE due to error code 0x2ee2

Searching through an array for multiple values on the same key

Eliminate placeholder text when the tab key is pressed

I am looking to showcase the data retrieved from an API by arranging it into columns with automatic data filling in a project using React.js and MySQL

Ways to Retrieve Material-UI Date Picker Data

Received TypeError: Unable to call reset function - issue clearing input field post ajax request

What is the best way to compare two date strings with the format dd/mm/yyyy using JavaScript?

What is the significance of the -infinity value in the JavaScript console?

Difficulty encountered in altering button color when the password and confirm password fields are the same in a Vue.js project?

encountered net::ERR_EMPTY_RESPONSE while attempting to locate a CSS file within an AngularJS directive

Error encountered in vue.js due to a ReferenceError when the resize event is used

Reordering images using jQuery leads to a malfunctioning reloading of images

Merge identical data into a unified field within a table

The JavaScript promise remains in limbo, neither resolving nor rejecting, seemingly stuck for unknown reasons

Trouble with ScrollTo animation on div with adjustable offset top feature - seeking assistance

Increasing an element in an array of objects using MongoDB and Mongoose

Unique rephrased text: "Varied wrapping styles in both

What is the best way to store the result from a JavaScript FileReader into a variable for future reference?

Updating a specific array element in MongoDB by its id

Creating interactive lists on Android devices with PhoneGap and jQuery Mobile