feat: add toc.init_open configuration item in theme _config.yml

_config.yml

@@ -110,6 +110,9 @@ toc:
   # If true, all level of TOC in a post will be displayed, rather than the activated part of it.
   expand_all: false
 
+  # If true, open TOC every time when you enter the article page
+  init_open: false
+
 
 # ---------------------------------------------------------------------------------------
 # Post copyright info

source/js/toc.js

@@ -67,6 +67,8 @@ function initTOC() {
       },
 
       showPageAsideWhenHasTOC() {
+
+        const openHandle = () => {
           const styleStatus = KEEP.getStyleStatus();
           const key = 'isOpenPageAside';
           if (styleStatus && styleStatus.hasOwnProperty(key)) {
@@ -75,6 +77,17 @@ function initTOC() {
             KEEP.utils.leftSideToggle.pageAsideHandleOfTOC(true);
           }
         }
+
+        const initOpenKey = 'init_open';
+
+        if (KEEP.theme_config.toc.hasOwnProperty(initOpenKey)) {
+          KEEP.theme_config.toc[initOpenKey] ? openHandle() : KEEP.utils.leftSideToggle.pageAsideHandleOfTOC(false);
+
+        } else {
+          openHandle();
+        }
+
+      }
     }
 
     KEEP.utils.showPageAsideWhenHasTOC();