From 4312abf7430734f2a617af4353401a613d4439a3 Mon Sep 17 00:00:00 2001
From: EGOIST <0x142857@gmail.com>
Date: Fri, 16 Dec 2016 18:18:14 +0800
Subject: [PATCH] check if element exists

---
 src/jump.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/jump.js b/src/jump.js
index 9e59114..15ee281 100644
--- a/src/jump.js
+++ b/src/jump.js
@@ -108,6 +108,8 @@ const jumper = () => {
       // bounding rect is relative to the viewport
       case 'object':
         element = target
+        // return if element does not exist
+        if (!element) return
         stop    = top(element)
       break
 
@@ -115,6 +117,8 @@ const jumper = () => {
       // bounding rect is relative to the viewport
       case 'string':
         element = document.querySelector(target)
+        // return if element does not exist
+        if (!element) return
         stop    = top(element)
       break
     }