Iterate through array and push only one of each element to another array

Question

I have array that i get from service, and in that array I have elements that are same (example: 1,2,2,3,1,1,3). I want to make another array that will contain only one of each elements from previous array (so new array should look like [1,2,3 etc). Can you point me to error in this function. Thanks

this.dataService.get().subscribe( response => {

        this.Data = response;
        response.forEach(res => {
            for (this.i = 0; this.i < this.headData.length; this.i++){
                res.head !== this.headData[this.i];
            }
            this.headData.push(res.head);
        }) }

stackoverflow.com/questions/1960473/…

Eliseo
– Eliseo

2018-05-31 15:05:19 +00:00
Commented May 31, 2018 at 15:05 — Eliseo
– Eliseo, Commented May 31, 2018 at 15:05
stackoverflow.com/a/14438954/5050924

Facundo Larrosa
– Facundo Larrosa

2018-05-31 15:06:11 +00:00
Commented May 31, 2018 at 15:06 — Facundo Larrosa
– Facundo Larrosa, Commented May 31, 2018 at 15:06

Abel Valdez · Accepted Answer · 2018-05-31 15:19:17Z

2

Use the Set to generate unique items in the array

var items = [1,2,2,3,1,1,3]
var uniqueItems = Array.from(new Set(items))

reference

Or you can use sortedUniq Lodash fucntions.

_.sortedUniq([1, 1, 2]);
// this is the result  => [1, 2]

answered May 31, 2018 at 15:19

Abel Valdez

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