How to assign a array in angular?

Question

 get_bid() {
    let higest_bid_array:any[];
    for(let i=0; i < this.crypto.length;i++) { 
      higest_bid_array =  this.crypto[i].highestBid;
    }
    return higest_bid_array;
  }

I've declared the variable as an array.

higest_bid_array:any[];

Here crypto is an array with values for example: crypto[i].highestBid has the value [1234, 5647, 8500];

How do i assign the values of crypto to higest_bid_array;

higest_bid_array should return [1234, 5647, 8500], it now returns only 8500 i,e. the last value of that array.

where am i going wrong ? thanks.

Possible duplicate of Typescript - multidimensional array initialization — Durga
– Durga, Commented Mar 19, 2018 at 8:38
higest_bid_array.push(this.crypto[i].highestBid) in for loop ? — mxr7350
– mxr7350, Commented Mar 19, 2018 at 8:46
Can you please say, what exactly is going wrong? Is an error thrown? Is the assigned data wrong? — Markai
– Markai, Commented Mar 19, 2018 at 8:52

Philipp Meissner · Accepted Answer · 2018-03-19 09:04:16Z

1

You overwrite the array every time within your loop. You probably want to push values to the array within the for-loop.

get_bid() {
    let higest_bid_array:any[];
    for(let i=0; i < this.crypto.length;i++) { 
      higest_bid_array.push(this.crypto[i].highestBid);
    }
    return higest_bid_array;
  }

Read on here if you want to know more about the Array push method.

answered Mar 19, 2018 at 9:04

Philipp Meissner

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