Fix set value by default

static/script.js

@@ -122,7 +122,7 @@ expKeywordSearchBtn.addEventListener("click", async ()=>{
     let release = releaseFilter2.value.trim();
     let wg = workingGroupFilter2.value.trim();
     let specType = specTypeFilter2.value.trim();
-    let threshold = thresholdInput.value.trim();
+    let threshold = thresholdInput.value.trim() != '' ? thresholdInput.value.trim() : 60
 
     if (!keywords){
         showError("Please enter at least one keyword");