JAVASCRIPT

react join array of components

<>
{objects.map(obj =>
  <Component prop1={obj.prop1} prop2={obj.prop1} />
).reduce((prev, curr) => <>{prev}<p>any delimeter</p>{curr}</>)
}
</>

reactjs join two array

a1 = ['1','2','3']
a2 = ['4','5','6']

a1.concat(a2)