check

test.html

@@ -63,19 +63,20 @@ function check(tab) {
     }
 }
 function push(tab) {
-    const tb = tab.split('/').slice(1).join('/')
-    window.history.pushState(null, null, `?tab=${tb}`)
+    window.history.pushState(null, null, `?tab=${tab}`)
 }
 function update(id) {
-    push(id)
+    const tab = id.split('/').slice(1).join('/')
+    push(tab)
 }
 function main() {
-    const tab = (new URL(document.location)).searchParams.get('tab')
+    let tab = (new URL(document.location)).searchParams.get('tab')
     if (tab) {
         check(tab)
     } else {
-        check('1/1')
-        push('tab/1/1')
+        tab = '1/1'
+        check(tab)
+        push(tab)
     }
 }
 </script>