From 07b3bfa1f3f123e094e8646c694ed730686d68e5 Mon Sep 17 00:00:00 2001
From: Ping Lin <limphoebe8@gmail.com>
Date: Sun, 3 Aug 2025 23:32:45 +0100
Subject: [PATCH] Improve input sanitization for split-pdf-by-sections

---
 .../src/main/resources/templates/split-pdf-by-sections.html | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/core/src/main/resources/templates/split-pdf-by-sections.html b/app/core/src/main/resources/templates/split-pdf-by-sections.html
index 548abe217..aac54ee8f 100644
--- a/app/core/src/main/resources/templates/split-pdf-by-sections.html
+++ b/app/core/src/main/resources/templates/split-pdf-by-sections.html
@@ -79,6 +79,12 @@
 
                   // Initial draw
                   updateVisualAid();
+                  
+                  // Removes all whitespace characters (spaces, tabs, newlines) as the user types
+                  document.getElementById('pageToSplit').addEventListener('input', function () {
+                    this.value = this.value.replace(/\s+/g, '');;
+                  });
+                  
                 </script>
                 <br>
                 <button type="submit" id="submitBtn" class="btn btn-primary" th:text="#{split-by-sections.submit}">Submit</button>