Edit in JSFiddle

function googleHome() {
  window.open('https://www.google.co.kr/', 'google', 'width=500,height=500');
}

function googleHome2() {
  window.open('https://www.google.co.kr/');
}

<h1 onclick="googleHome()">구글 홈페이지1</h1>
<h1 onclick="googleHome2()">구글 홈페이지2</h1>