diff --git a/login_functions.js b/login_functions.js
new file mode 100644
index 0000000000000000000000000000000000000000..c419ff8de2d5d8e288b0d33ec39038a984d80459
--- /dev/null
+++ b/login_functions.js
@@ -0,0 +1,6 @@
+//获取随机数
+function getRandNumb(min, max) {
+    var range = max - min
+    var seed = Math.random()
+    return (min + Math.round(seed * range))
+}