How do you feel about setting your request values right there inline?

STATIC
              hx-trigger="click"
              hx-vals='{"location": "01245"}'>
   Click for weather in one static location

DYNAMIC
              hx-trigger="click"
              hx-vals='js:{location: document.getElementById("zipcode").value}'>
   Click for weather in one static location

OR
              hx-trigger="click"
              hx-vals='js:{location: someJavascriptCalculationFunction()}'>
   Click for weather in one static location