combine the values from the card objects

Question

combine the values from the card objects

Hello, I am currently new to programming and learning Javascript. I am facing a challenge with a school assignment at the moment. In my code below, I have a function that works when I log one object like this:

score([{ suit: 'HEARTS', value: 1 }])

This returns 11. However, I am unsure how to modify my code to handle multiple objects and add their values together for a combined score. For instance, if I call these objects with values 2, 3, and 4, it should return 9.

score([{ suit: 'HEARTS', value: 2 }, { suit: 'HEARTS', value: 3 }, { suit: 'HEARTS', value: 4 }])

The current implementation of my code is as follows:

let score = function (cardObject) {
  let getScore = 0;

  for (let i = 0; i < cardObject.length; i++) {
   getScore += cardObject[i].value
   
    if (getScore === 1) {
      return 11;
    } else if (getScore === 2) {
      return 2;
    } else if (getScore === 3) {
      return 3;
    } else if (getScore === 4) {
      return 4;
    } else if (getScore === 5) {
      return 5;
    } else if (getScore === 6) {
      return 6;
    } else if (getScore === 7) {
      return 7;
    } else if (getScore === 8) {
      return 8;
    } else if (getScore === 9) {
      return 9;
    } else {
      return 10;
    }
  }
}

javascript arrays function object

Answer 1

Answer №1

Instead of having if statements for each individual number, you can streamline your code by combining them into one statement.

Revised the function based on feedback to account for face cards with an if statement.

The initial if statement covers values ranging from 10 to 13, adding 10 if met. If the card value is 1, add 11. Otherwise, simply add the card's value.

Finally, I return the getScore variable holding the cumulative score.

Your previous code returned the value prematurely, halting the function execution. The correct placement for the return would be at the very end, following completion of all logical operations.

let tally = function(cardDeck) {
  let totalScore = 0;

  for (let i = 0; i < cardDeck.length; i++) {
    let cardVal = cardDeck[i].value;
    if (cardVal >= 10 && cardVal <= 13) {
      totalScore += 10;
    } else if (cardVal === 1) {
      totalScore += 11;
    } else {
      totalScore += cardVal;
    }
  }

  return totalScore;
}

console.log(tally([{
  suit: 'HEARTS',
  value: 10
}, {
  suit: 'HEARTS',
  value: 11
}, {
  suit: 'HEARTS',
  value: 12
}]));

Answer 2

Instead of having if statements for each individual number, you can streamline your code by combining them into one statement.

Revised the function based on feedback to account for face cards with an if statement.

The initial if statement covers values ranging from 10 to 13, adding 10 if met. If the card value is 1, add 11. Otherwise, simply add the card's value.

Finally, I return the getScore variable holding the cumulative score.

Your previous code returned the value prematurely, halting the function execution. The correct placement for the return would be at the very end, following completion of all logical operations.

let tally = function(cardDeck) {
  let totalScore = 0;

  for (let i = 0; i < cardDeck.length; i++) {
    let cardVal = cardDeck[i].value;
    if (cardVal >= 10 && cardVal <= 13) {
      totalScore += 10;
    } else if (cardVal === 1) {
      totalScore += 11;
    } else {
      totalScore += cardVal;
    }
  }

  return totalScore;
}

console.log(tally([{
  suit: 'HEARTS',
  value: 10
}, {
  suit: 'HEARTS',
  value: 11
}, {
  suit: 'HEARTS',
  value: 12
}]));

Answer 3

Answer №2

To achieve this, you can utilize the Array#reduce method.

function calculateTotal(arr) {
            return arr.reduce((acc, {value}) => acc + (value === 1 ? 11 : value), 0);
        }
        let result = calculateTotal([{ suit: 'HEARTS', value: 2 }, { suit: 'HEARTS', value: 3 }, { suit: 'HEARTS', value: 4 }]);
        console.log(result);

Answer 4

To achieve this, you can utilize the Array#reduce method.

function calculateTotal(arr) {
            return arr.reduce((acc, {value}) => acc + (value === 1 ? 11 : value), 0);
        }
        let result = calculateTotal([{ suit: 'HEARTS', value: 2 }, { suit: 'HEARTS', value: 3 }, { suit: 'HEARTS', value: 4 }]);
        console.log(result);

Answer 5

Answer №3

Using if num return num isn't necessary to retrieve the number in this scenario. The key function at play here is return, which exits the function entirely and passes back the value. To achieve the desired result, a different approach is recommended:

let calculateTotal = function (cards) {
  let total = 0;

  for (let i = 0; i < cards.length; i++) {
    // Instead of directly returning numbers, we evaluate each card's value
    // If a card's value is 1, we add 11 to the total; otherwise, we add the original value
    if (cards[i].value == 1){
      total += 11;
    } else {
      total += cards[i].value;
    }
  }
  // Finally, we return the total sum calculated instead
  return total;
}

Answer 6

Using if num return num isn't necessary to retrieve the number in this scenario. The key function at play here is return, which exits the function entirely and passes back the value. To achieve the desired result, a different approach is recommended:

let calculateTotal = function (cards) {
  let total = 0;

  for (let i = 0; i < cards.length; i++) {
    // Instead of directly returning numbers, we evaluate each card's value
    // If a card's value is 1, we add 11 to the total; otherwise, we add the original value
    if (cards[i].value == 1){
      total += 11;
    } else {
      total += cards[i].value;
    }
  }
  // Finally, we return the total sum calculated instead
  return total;
}

Answer 7

Answer №4

Here's a straightforward method that should work:

function calculateTotal(cardObject) {
  let totalScore = 0

  for (let i = 0; i < cardObject.length; i++) {
    switch (cardObject[i].value) {
      case 1: {
        totalScore += 11
        break
      }
      default: {
        totalScore += cardObject[i].value
        break
      }
    }
  }

  return totalScore
}

calculateTotal([{suit:"HEARTS",value:1}]) // 11
calculateTotal([{suit:"HEARTS",value:2},{suit:"HEARTS",value:3},{suit:"HEARTS",value:4}]) // 9

Answer 8

Here's a straightforward method that should work:

function calculateTotal(cardObject) {
  let totalScore = 0

  for (let i = 0; i < cardObject.length; i++) {
    switch (cardObject[i].value) {
      case 1: {
        totalScore += 11
        break
      }
      default: {
        totalScore += cardObject[i].value
        break
      }
    }
  }

  return totalScore
}

calculateTotal([{suit:"HEARTS",value:1}]) // 11
calculateTotal([{suit:"HEARTS",value:2},{suit:"HEARTS",value:3},{suit:"HEARTS",value:4}]) // 9

combine the values from the card objects

Answer №1

Answer №2

Answer №3

Answer №4

Similar questions

Command to set up webpack configuration for watching changes in Angular 2 CLI: ng build --watch

send additional form elements to the AJAX suggestion box script

Cleaning a string of word characters in Javascript: a step-by-step guide

Unable to retrieve context value for authentication requirements

Struggling with using flexboxes and creating animated elements

Having trouble with your computed includes not working in Vue.js? Unsure of how to fix it?

What is the best way to access an external array using ng-repeat in AngularJS?

Passing parameters to $http.get in Angular can be achieved by including them

Jquery click event is functioning for only one specific id, not for both

The issue lies with the event.target.name property - it appears to be inconsistent, working at times but failing to read properly at others

Can you explain the role of the faceVertexUV array within the three.js Geometry class?

What could be causing the lack of data for the current user?

Adding the number of occurrences to duplicates in a string array using JavaScript

Is your window.location.hash malfunctioning?

Tips for transitioning this JavaScript code into jQuery syntax

Angular ngClass and ngIf directives failing to update upon alterations

Once the node modules folder has been received, proceed with installing npm packages

MongoDB Update is only impacting the first element within the array

Is there a way to record form choices upon submission?

Sending the value of a react select component from a React.js application to Firebase