How to know if values includes in array and if exist push to array?

Question

I need to push in array data if exist in array? Example code:

  filterMealType(type){ 
        this.filteredRecipe.map(
          obj => { 
            if(obj.mealTypes.includes(type)){
              this.filterRecipeByMealType.push(obj) 
            }else {
              this.filterRecipeByMealType = []
            }
          }
        )
        console.log('current array ', this.filterRecipeByMealType)
      }

type as parameter is only number, 0 or 1 or 2 or 3. filteredRecipe is array:

[
   {
      "name":"Obroki",
      "description":"",
      "difficulty":4,
      "preparationTime":1920,
      "ingredients":[
         "dsad",
         "dasdas"
      ],
      "instructions":[
         "sad",
         "dsa"
      ],
      "pictureUrl":"https://www.url.com/images/cb51adad61a04936b831378865ad8bf6.jpg",
      "recepieType":"",
      "mealTypes":[
         0,
         2
      ],
      "id":281
   },
   {
      "name":"Testen",
      "description":"",
      "difficulty":3,
      "preparationTime":240,
      "ingredients":[
         "sestavino",
         "test"
      ],
      "instructions":[
         "inst"
      ],
      "pictureUrl":"https://www.url.com/images/aca27231f9af4ed0af5e1ec4af09861e.jpg",
      "recepieType":"",
      "mealTypes":[
         0,
         2
      ],
      "id":282
   },
   {
      "name":"Mleko",
      "description":"",
      "difficulty":2,
      "preparationTime":2580,
      "ingredients":[
         "ddd"
      ],
      "instructions":[
         "das",
         "dasd"
      ],
      "pictureUrl":"https://www.url.com/images/1fd0bd88175a4680ae9430579f1b781c.jpg",
      "recepieType":"",
      "mealTypes":[
         1
      ],
      "id":283
   },
   {
      "name":"test",
      "description":"",
      "difficulty":4,
      "preparationTime":240,
      "ingredients":[
         "jajca",
         "meso"
      ],
      "instructions":[
         "rf"
      ],
      "pictureUrl":"https://www.url.com/images/0fafcd552354468bbca3a78cb9796004.jpg",
      "recepieType":"",
      "mealTypes":[
         0,
         2
      ],
      "id":211
   }
]

I if obj.mealTypes includes any of number i need to push to array. Right now no work good. Now i only push one item...no work good. If you need i can share to stackblitz

Esteban MANSART · Accepted Answer · 2020-11-06 19:30:53Z

1

Just remove your else condition and reset your array at the begining of your function

 filterMealType(type){ 
    this.filterRecipeByMealType = []
    this.filteredRecipe.map(
      obj => { 
        if(obj.mealTypes.includes(type)){
          this.filterRecipeByMealType.push(obj) 
        }
      }
    )
    console.log('current array ', this.filterRecipeByMealType)
  }

answered Nov 6, 2020 at 19:30

Esteban MANSART

5613 silver badges12 bronze badges

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

2 Comments

wamovec Over a year ago

Friend when i select another time second item, my array is not cleared

Esteban MANSART Over a year ago

I edited my answer in the meantime, did you see it ? The reset at the begining of the function

Emiel Zuurbier · Accepted Answer · 2020-11-07 09:17:39Z

0

Use the filter method on the filteredRecipe array to return a new array with only recipes that have the meal type you're looking for.

filterMealType(type) { 
  this.filterRecipeByMealType = this.filteredRecipe.filter(
    recipe => recipe.mealTypes.includes(type)
  );
  console.log('current array ', this.filterRecipeByMealType)
}

answered Nov 7, 2020 at 9:17

Emiel Zuurbier

21.2k3 gold badges25 silver badges36 bronze badges

Collectives™ on Stack Overflow

How to know if values includes in array and if exist push to array?

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related