diff --git a/pages/Ordervideolearning/Ordervideolearning.vue b/pages/Ordervideolearning/Ordervideolearning.vue
index 7b0023b..165ed86 100644
--- a/pages/Ordervideolearning/Ordervideolearning.vue
+++ b/pages/Ordervideolearning/Ordervideolearning.vue
@@ -132,8 +132,8 @@
 				uni.getSystemInfo({
 					success: function(res) {
 						if (res.platform == 'ios') {
-							if (this.videoitem.watchTime) {
-								this.videoContext.seek(this.videoitem.watchTime)
+							if (that.videoitem.watchTime) {
+								that.videoContext.seek(that.videoitem.watchTime)
 							}
 						} else {}
 					}
diff --git a/pages/Videolearning/Videolearning.vue b/pages/Videolearning/Videolearning.vue
index 340ca54..1415131 100644
--- a/pages/Videolearning/Videolearning.vue
+++ b/pages/Videolearning/Videolearning.vue
@@ -120,8 +120,8 @@
 				uni.getSystemInfo({
 					success: function(res) {
 						if (res.platform == 'ios') {
-							if (this.videoitem.watchTime) {
-								this.videoContext.seek(this.videoitem.watchTime)
+							if (that.videoitem.watchTime) {
+								that.videoContext.seek(that.videoitem.watchTime)
 							}
 						} else {}
 					}