diff --git a/src/components/doc-width-nav.vue b/src/components/doc-width-nav.vue
index 76c1cd498e8a44cf05fbfcf8794c9831c192784e..c0e416eed30c9779ab7219cae936ebd9afb43f7a 100644
--- a/src/components/doc-width-nav.vue
+++ b/src/components/doc-width-nav.vue
@@ -87,22 +87,22 @@ export default {
               pre_h2_index = 0;
               pre_h3_index = 0;
               level = 1;
-              id = `nav_${pre_h1_index}` + "_" + time;
+              id = `nav_${pre_h1_index}_${time}`;
 
               newTitle = title.replace(/<h1/g, `<h1 id="${id}"`);
             } else if (title.match(/<h2(([\s\S])*?)<\/h2>/g)) {
               pre_h2_index++;
               pre_h3_index = 0;
               level = 2;
-              id = `nav_${pre_h1_index}_${pre_h2_index}` + "_" + time;
+              id = `nav_${pre_h1_index}_${pre_h2_index}_${time}`;
 
               newTitle = title.replace(/<h2/g, `<h2 id="${id}"`);
             } else if (title.match(/<h3(([\s\S])*?)<\/h3>/g)) {
               pre_h3_index++;
               level = 3;
-              id = `nav_${pre_h1_index}_${pre_h2_index}_${pre_h3_index}`;
+              id = `nav_${pre_h1_index}_${pre_h2_index}_${pre_h3_index}_${time}`;
 
-              newTitle = title.replace(/<h3/g, `<h3 id="${id}"`) + "_" + time;
+              newTitle = title.replace(/<h3/g, `<h3 id="${id}"`);
             }
 
             content = content.replace(new RegExp(title), newTitle);