How do I write a <br/> tag in JavaScript?

var mybr = document.createElement('br');
someElement.appendChild(mybr);

Further reading:

• https://webplatform.github.io/docs/tutorials/traversing_the_dom/
• https://webplatform.github.io/docs/tutorials/creating_and_modifying_html/

document.write('<br/>');

this should do the trick.