diff --git a/pages/mainPage/mainPage.js b/pages/mainPage/mainPage.js
index 8594bc0..326e260 100644
--- a/pages/mainPage/mainPage.js
+++ b/pages/mainPage/mainPage.js
@@ -80,5 +80,11 @@ Page({
         wx.navigateTo({
             url: '/pages/login/login',
         })
+    },
+    //生成随机数,保留小数点2位
+    random1To10(decimalPlaces = 2) {
+        const random = Math.random() * 9;
+        const result = random + 1;
+        return Number(result.toFixed(decimalPlaces));
     }
 })
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