JSFiddle - React, Tailwind, and code Playground

by mohammadAdil

JavaScript

array1 = [1, 2, 3];  
array2 = [4, 5, 6, 7, 8,9];  

array3 = [];

for(var i = 0 ; i < array2.length ; i++){
  if(i <= array1.length){
     array3.push(array1[i]);
  }
  array3.push(array2[i]);

}

$('body').append(array3);