Foreach Ionic 3

I have the following code but I need to know how to make a foreach at the time of subscribing to data that I bring from my web service,


let url = URL_SERVICIOS + 'productos';
this.http.get( url )
          .map( resp=> resp.json() )
          .subscribe( data =>{


           this.por_categoria = data;
          // console.log(this.por_categoria);


You need to specify the response data type of data is an array, like:
.subscribe((data: any[]) => { ...
Then use foreach:
data.foreach((item) => { ...

Your data has to be an array to prevent errors though

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