Question

63

Check If Array Has Value in Angular

rated 0 times [ 64] [ 1] / answers: 1 / hits: 6813 / 4 Years ago, tue, may 12, 2020, 12:00:00

I have to check if any of the cuesData has a value or length greater than 0.
In my code below, i can only check the first array but not the others.

TS

checkValues(values) {

    const result = Object.values(values).every((value) => value[1].cuesData.length > 0);

    return result;

}

HTML

<div *ngIf=checkValues(values) === true>

JSON

  [

      [

        videoData__1,

        {

          id: 1,

          title: Pale Blue Dot,

          stoppedAt: 97.834667,

          cuesData: [

            {

              startTime: 25.335678,

              endTime: 35.335678,

              description: fqff

            }

          ]

        }

      ],

      [

        videoData__2,

        {

          id: 2,

          title: Big Buck Bunny,

          stoppedAt: 247.57881,

          cuesData: []

        }

      ],

      [

        videoData__3,

        {

          id: 3,

          title: Elephants Dream,

          stoppedAt: 404.585327,

          cuesData: []

        }

      ]

]

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jarettajb

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answered 4 Years ago cherish · Accepted Answer

Change,

checkValues(values) {

    const result = Object.values(values).every((value) => value[1].cuesData.length > 0);

    return result;

}

To

checkValues(values){

  const result = Object.values(values).some((value) => value[1].cuesData.length > 0);

  return result;

}

Working Stackblitz: https://stackblitz.com/edit/my-angular-starter-j4yypu

Here .every() method will check that all conditions should met but whereas some() method works that at least one condition has been true..

Stackblitz without cuesdata length: https://stackblitz.com/edit/my-angular-starter-cfpxa5