1window.open("https://www.yourURL.com", "_blank");

1function NewTab() { 
2            window.open( 
3              "https://www.yourURL.com", "_blank");
4}

1var win = window.open('http://stackoverflow.com/', '_blank');
2if (win) {
3    //Browser has allowed it to be opened
4    win.focus();
5} else {
6    //Browser has blocked it
7    alert('Please allow popups for this website');
8}