How to get a count of a variable in an array in Angular 8

Question

Here is my sample data

    this.factorList = [ 
    {      
    factorEnrollment: "OPTIONAL",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "call"
  },
    {  
    factorEnrollment: "OPTIONAL",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "sms"
  },
  {  
    factorEnrollment: "REQUIRED",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "sms"
  }
    ];

How to get a count of how many FactorEnrollment: "REQUIRED" is in the array above in angular 8?

I would say, it is not related to the Angular but you can use something like this : this.factorList.filter(d => d.factorEnrollment === "REQUIRED").length — Behrouz Pooladrak
– Behrouz Pooladrak, Commented Apr 2, 2020 at 18:38

Kurt Hamilton · Accepted Answer · 2020-04-02 18:35:36Z

1

You could filter the array by the required condition and get the length of that array.

const factorList = [ 
    {      
    factorEnrollment: "OPTIONAL",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "call"
  },
    {  
    factorEnrollment: "OPTIONAL",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "sms"
  },
  {  
    factorEnrollment: "REQUIRED",
    factorProvider: "OKTA",
    factorStatus: "NOT_SETUP",
    factorType: "sms"
  }
    ];
    
 
 const filtered = factorList.filter(x => x.factorEnrollment === 'REQUIRED');
 
 console.log('Number of required:', filtered.length);

answered Apr 2, 2020 at 18:35

Kurt Hamilton

13.7k1 gold badge28 silver badges42 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Adrita Sharma · Accepted Answer · 2020-04-02 18:35:30Z

0

Try like this:

let count = this.factorList.filter(x => x.factorEnrollment == "REQUIRED").length

Working Demo

answered Apr 2, 2020 at 18:35

Adrita Sharma

22.3k11 gold badges75 silver badges85 bronze badges

Comments

Tzimpo · Accepted Answer · 2020-04-02 18:35:46Z

0

You can use filter method like

 let count = this.factorList.filter(x => x.factorEnrollment === 'REQUIRED').length;

answered Apr 2, 2020 at 18:35

Tzimpo

1,0072 gold badges11 silver badges28 bronze badges

Comments

Arunkumar Ramasamy · Accepted Answer · 2020-04-02 18:36:33Z

0

@Margerine

You can use the array methods of 'filter'

`factorList.filter(factor => factor.factorEnrollment === 'REQUIRED')`

answered Apr 2, 2020 at 18:36

Arunkumar Ramasamy

7914 silver badges9 bronze badges

Comments

Edward · Accepted Answer · 2020-04-02 18:38:02Z

0

you can use the javascript array.filter operator.

let matches: number = this.factoryList.filter( item => item.factorEnrollment === 'REQUIRED').length

that will return the count of how many items match your criteria

you could also use reduce operator if you'd like

answered Apr 2, 2020 at 18:38

Edward

1,1361 gold badge14 silver badges27 bronze badges

Collectives™ on Stack Overflow

How to get a count of a variable in an array in Angular 8

5 Answers 5

Comments

Comments

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

Comments

Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related