javascript:document.location.href does not work

Question

I am trying to use js functions to improvise navigation in my website, although I am not able to parse the function in using document.function.href. I have simplified my code here for clarity. Please help me.

<button href="javascript:document.location.href=destinationFunc("target.html");">PRESS</button>

Answer 1

<button onclick="var lnk='target.html'; document.location.href=destinationFunc(lnk);">PRESS</button>