Angular2 typescript search multiply values in array from array

Question

Question about searching values from array into another array. Example of arrays:

 items = [{"name":"Goran", "category":[0:3, 1:5]}, {"name":"Marko", "category":[0:5, 1:4]}]

 arr1 = ["5", "4", "3"]

Typescript try:

let result = items.filter(item => arr1.find(f => f == items.category))

and the result is none. Can you give me hint how can I do this in one line of code. Basically this is filter from template. I you can image an array of checkbox checking the values from json object. So I want to find values where from arr1 in object items.

Is category supposed to be an array of numbers? And if so, do you want ANY item in arr1 to be in the category array? Or for them to contain the same items? — Frank Modica
– Frank Modica, Commented Jun 15, 2017 at 21:28
Yea category is only an array. And I want to find all numbers from arr1 in category. — Marin
– Marin, Commented Jun 15, 2017 at 22:26
Can you give an example of the output you were trying to receive? — Frank Modica
– Frank Modica, Commented Jun 16, 2017 at 14:17

Vivek Doshi · Accepted Answer · 2017-06-15 17:37:40Z

1

Try to use index of :

let result = items.filter(item => {
    return arr1.indexOf(items.category) > -1        
})

answered Jun 15, 2017 at 17:37

Vivek Doshi

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