diff --git a/pages/user/assistance/friend_assistance.js b/pages/user/assistance/friend_assistance.js
index 8701da5..438925c 100644
--- a/pages/user/assistance/friend_assistance.js
+++ b/pages/user/assistance/friend_assistance.js
@@ -54,6 +54,7 @@ Page({
 	 * 生命周期函数--监听页面显示
 	 */
 	onShow: function() {
+		var th=this;
 		if (this.data.tasking != null && this.data.tasking != 'undefined' && this.data.tasking != "" && this.data.tasking !=
 			0) {