Remove `allParams()` check

visualizer/static/script.js

@@ -56,9 +56,6 @@ function indexVisualize() {
     year: selectVal('year'),
     measurement: selectVal('measurement'),
   };
-  if (!allParams(params)) {
-    return;
-  }
   setSources(sourceLink(params.station, params.year));
   visualize(`${SCRIPT_ROOT}/plot`, params);
 }
@@ -71,9 +68,6 @@ function overlayVisualize() {
     year2: selectVal('year-2'),
     measurement: selectVal('measurement'),
   };
-  if (!allParams(params)) {
-    return;
-  }
   setSources(sourceLink(params.station1, params.year1, 1),
              sourceLink(params.station2, params.year2, 2));
   visualize(`${SCRIPT_ROOT}/plot/overlay`, params);
@@ -86,9 +80,6 @@ function boxplotVisualize() {
     year2: selectVal('year-2'),
     measurement: selectVal('measurement'),
   };
-  if (!allParams(params)) {
-    return;
-  }
   setSources(sourceLink(params.station, params.year1));
   // XXX No year 2?
   visualize(`${SCRIPT_ROOT}/plot/boxplot`, params);
@@ -134,18 +125,6 @@ function setSources(...sources) {
   sourceDiv.replaceChildren(...sources);
 }
 
-/**
- * Check whether all properties are truthy.
- */
-function allParams(params) {
-  for (const key in params) {
-    if (!params[key]) {
-      return false;
-    }
-  }
-  return true;
-}
-
 /**
  * Generate a query string from parameters.
  */