feat: 随机背景

_config.yml

@@ -91,7 +91,8 @@ category_per_img:
 footer_img: false
 
 # Website Background
-# Can set it to color or image url
+# Can set it to color, image URL or an array containing colors and/or image URLs
+# If an array is provided, a random background will be selected from the array on each load
 background:
 
 cover:

scripts/helpers/page.js

@@ -89,6 +89,12 @@ hexo.extend.helper.register('findArchivesTitle', function (page, menu, date) {
 hexo.extend.helper.register('getBgPath', function (path) {
   if (!path) return ''
 
+  // Random background
+  if (Array.isArray(path)) {
+    const i = Math.floor(Math.random() * path.length)
+    path = path[i]
+  }
+
   const absoluteUrlPattern = /^(?:[a-z][a-z\d+.-]*:)?\/\//i
   const relativeUrlPattern = /^(\.\/|\.\.\/|\/|[^/]+\/).*$/
   const colorPattern = /^(#|rgb|rgba|hsl|hsla)/i