Is it possible to verify if a boolean value is false within each object in an array?

Question

Is it possible to verify if a boolean value is false within each object in an array?

I am working with an array that contains multiple objects. Each object has a 'Position' and 'Mandatory' field:

quesListArray = [
                   {Position: 1, Mandatory: false}, 
                   {Position: 2, Mandatory: true}, 
                   {Position: 3, Mandatory: false}, 
                   ...
                   ...
                ]

I need to find out if the 'Mandatory' field in every object is set to false. If all objects have 'Mandatory' set to false, I want to display a message.

Any assistance on how to achieve this would be greatly appreciated. Thank you.

typescript

Answer 1

Answer №1

Utilize the every method with an arrow function (for simplicity) on questListArray, as shown below:

areAllMandatoriesFalse() {
   if (this.quesListArray.every(item => !item.Mandatory)) {
     alert("All are false");
   }
   else {
      alert("Not all are false");
   }
}

DEMO

Answer 2

Utilize the every method with an arrow function (for simplicity) on questListArray, as shown below:

areAllMandatoriesFalse() {
   if (this.quesListArray.every(item => !item.Mandatory)) {
     alert("All are false");
   }
   else {
      alert("Not all are false");
   }
}

DEMO

Answer 3

Answer №2

Try using the 'every' method. For instance:

function isUnderLimit(value) {
    return value < 50;
}

var numbers = [5, 25, 45, 15, 35];

console.log(numbers.every(isUnderLimit));
// expected result: true

I trust this suggestion will be beneficial ツ

Answer 4

Try using the 'every' method. For instance:

function isUnderLimit(value) {
    return value < 50;
}

var numbers = [5, 25, 45, 15, 35];

console.log(numbers.every(isUnderLimit));
// expected result: true

I trust this suggestion will be beneficial ツ

Answer 5

Answer №3

Give this a shot:

validateMandatoryProps() {
    let allMandatoryPropsPresent = true;
    for (let i = 0; i < this.propList.length; i++) {
      const prop = this.propList[i];
      if (!prop.isMandatory) {
        continue;
      } else {
        allMandatoryPropsPresent = false;
        break;
      }
    }
    return allMandatoryPropsPresent;
  }

Invoke the Method in your code:

const isAllPropsValid = this.validateMandatoryProps();

Answer 6

Give this a shot:

validateMandatoryProps() {
    let allMandatoryPropsPresent = true;
    for (let i = 0; i < this.propList.length; i++) {
      const prop = this.propList[i];
      if (!prop.isMandatory) {
        continue;
      } else {
        allMandatoryPropsPresent = false;
        break;
      }
    }
    return allMandatoryPropsPresent;
  }

Invoke the Method in your code:

const isAllPropsValid = this.validateMandatoryProps();

Is it possible to verify if a boolean value is false within each object in an array?

Answer №1

Answer №2

Answer №3

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