Add href link using Javascript

Question

I have in my code this

<span class="link-hello">HELLO</span>

How can I using Javascript add a href link to word HELLO?

Answer 1

use <a><a/> tag instead of <span></span> tag

<a href="your_link" class="link-hello">Hello</a>

Answer 2

Its not possible because this code is inside CMS systém in field which does not support a href tag... it support only span tag with class... thats why I am asking for help how can I achieve using JS to add a href