From e6c945bac730dca9f554f51ec6460e287e9aa879 Mon Sep 17 00:00:00 2001
From: Lan Hui <1348141770@qq.com>
Date: Fri, 30 Aug 2024 08:32:09 +0800
Subject: [PATCH] fillword.js & highlight.js: fix JavaScript errors on the
 front page

---
 app/static/js/fillword.js  | 15 ++++++++++-----
 app/static/js/highlight.js | 12 +++++++-----
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/app/static/js/fillword.js b/app/static/js/fillword.js
index 111027a..3e88107 100644
--- a/app/static/js/fillword.js
+++ b/app/static/js/fillword.js
@@ -21,14 +21,19 @@ function fillInWord() {
     localStorage.setItem('selectedWords', element.value);
 }
 
-document.getElementById("text-content").addEventListener("click", fillInWord, false);
+if (document.getElementById("text-content")) {
+    document.getElementById("text-content").addEventListener("click", fillInWord, false);
+}
 
 const sliderValue = document.getElementById("rangeValue");
 const inputSlider = document.getElementById("rangeComponent");
-inputSlider.oninput = () => {
-    let value = inputSlider.value;
-    sliderValue.textContent = value + '×';
-};
+
+if (inputSlider) {
+    inputSlider.oninput = () => {
+	let value = inputSlider.value;
+	sliderValue.textContent = value + '×';
+    };
+}
 
 function onReadClick() {
     isRead = !isRead;
diff --git a/app/static/js/highlight.js b/app/static/js/highlight.js
index 7c3a112..7a1df5d 100644
--- a/app/static/js/highlight.js
+++ b/app/static/js/highlight.js
@@ -9,11 +9,13 @@ function cancelBtnHandler() {
 }
 
 function showBtnHandler() {
-    document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
-    document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
-    document.getElementById("text-content").addEventListener("click", fillInWord, false);
-    document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
-    highLight();
+    if (document.getElementById("text-content")) {
+	document.getElementById("text-content").removeEventListener("click", fillInWord2, false);
+	document.getElementById("text-content").removeEventListener("touchstart", fillInWord2, false);
+	document.getElementById("text-content").addEventListener("click", fillInWord, false);
+	document.getElementById("text-content").addEventListener("touchstart", fillInWord, false);
+	highLight();
+    }
 }
 function replaceWords(str, word) {
   let count = 0;