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plugins/browser.js

@@ -3,7 +3,10 @@ import vditor from 'vditor'
 import 'vditor/dist/index.css'
 
 const $tags = document.getElementById('tags')
-const floatTop = $tags.offsetTop + $tags.scrollHeight + 30
+let floatTop = null
+if ($tags) {
+  floatTop = $tags.offsetTop + $tags.scrollHeight + 30
+}
 
 function addEvent (obj, type, fn) {
   if (obj.attachEvent) {
@@ -24,30 +27,32 @@ window.onload = function () {
 
   // 底部返回顶部按钮
   const top = document.getElementById('gotop')
-  // 滚动一屏幕时显示回到顶部
-  addEvent(window, 'scroll', function () {
-    const currentPosition = document.documentElement.scrollTop || document.body.scrollTop
-    currentPosition > window.screen.availHeight ? top.style.display = 'block' : top.style.display = 'none'
+  if (top) {
+    // 滚动一屏幕时显示回到顶部
+    addEvent(window, 'scroll', function () {
+      const currentPosition = document.documentElement.scrollTop || document.body.scrollTop
+      currentPosition > window.screen.availHeight ? top.style.display = 'block' : top.style.display = 'none'
 
-    // 左部导航自动浮动
-    if (currentPosition > floatTop) {
-      document.getElementById('navication').style.position = 'fixed'
-    } else {
-      document.getElementById('navication').style.position = 'static'
-    }
-  })
-
-  top.onclick = function () {
-    var timer = setInterval(function () { // eslint-disable-line
-      let currentPosition = document.documentElement.scrollTop || document.body.scrollTop
-      currentPosition -= 100
-      if (currentPosition > 0) {
-        window.scrollTo(0, currentPosition)
+      // 左部导航自动浮动
+      if (currentPosition > floatTop) {
+        document.getElementById('navication').style.position = 'fixed'
       } else {
-        window.scrollTo(0, 0)
-        clearInterval(timer)
+        document.getElementById('navication').style.position = 'static'
       }
-    }, 10)
+    })
+
+    top.onclick = function () {
+      var timer = setInterval(function () { // eslint-disable-line
+        let currentPosition = document.documentElement.scrollTop || document.body.scrollTop
+        currentPosition -= 100
+        if (currentPosition > 0) {
+          window.scrollTo(0, currentPosition)
+        } else {
+          window.scrollTo(0, 0)
+          clearInterval(timer)
+        }
+      }, 10)
+    }
   }
 
   let _hmt = _hmt || [] // eslint-disable-line