merge array in array typescript code example

Example 1: angular append array to another

this.results = [ ...this.results, ...data.results];

Example 2: typescript list concat

var alpha = ["a", "b", "c"]; 
var numeric = [1, 2, 3];

var alphaNumeric = alpha.concat(numeric); 
console.log("alphaNumeric : " + alphaNumeric );