diff --git a/index.html b/index.html
index 5d19ed6..ddaba6e 100644
--- a/index.html
+++ b/index.html
@@ -60,11 +60,13 @@
 
                 init() {
                   this.dom = document.querySelector("div[data-root=p1457912674670354432]");
-                  var title = this.dom.querySelector('.title');
+                  if (this.dom) {
+                    var title = this.dom.querySelector('.title');
 
-                  var myDate = new Date();
-                  var tMonth = myDate.getMonth();
-                  title.innerHTML = tMonth === 0 ? '12月份工资表' : tMonth + '月份工资表';
+                    var myDate = new Date();
+                    var tMonth = myDate.getMonth();
+                    title.innerHTML = tMonth === 0 ? '12月份工资表' : tMonth + '月份工资表';
+                  }
                 },
 
                 jumpDetails(that) {