What is the best way to extract multiple records from an Array?

Below is a simple filter function that filters Rec_pagedItems in an array called allItems.

someval(value){
    if(value.length>=5){
        this._pagedItems= this.allItems.find(e=>e.uniqueid == value || e.name == value );

        if(this._pagedItems == undefined){
            this.pagedItems=null;
        }
        else{
            this.pagedItems=[];
            this.pagedItems.push(this._pagedItems);
        }
    }
}

When the code is modified to remove ||, like

this._pagedItems= this.allItems.find(e=>e.uniqueid == value );
, it works differently.

Answer №1

You are utilizing the incorrect Array method. Using .find() will only return the first item, but you should be using .filter() instead to get an array of all matching entries.

 someValue(value){
  if(value.length>=5){
        this._pagedItems = this.allItems.filter(item => item.uniqueId == value || item.name == value );

        if(this._pagedItems === undefined){
            this.pagedItems = null;
        } else{
            this.pagedItems = [];
            this.pagedItems.push(this._pagedItems);
        }
    }
}

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