diff --git a/js/badJavaScript.js b/js/badJavaScript.js
new file mode 100644
index 0000000000000000000000000000000000000000..e3cf30fc2bb53484b75046b35a1d837ea4d1befa
--- /dev/null
+++ b/js/badJavaScript.js
@@ -0,0 +1,20 @@
+//这种代码可读性差，需要用switch case来写
+function plateType(v) {
+    if (v == 11) {
+        return "同花顺概念";
+    } else if (v == 21) {
+        return "同花顺一级";
+    } else if (v == 22) {
+        return "同花顺二级";
+    } else if (v == 23) {
+        return "同花顺三级";
+    } else if (v == 24) {
+        return "申万一级";
+    } else if (v == 25) {
+        return "申万二级";
+    } else if (v == 26) {
+        return "申万三级";
+    } else if (v == 31){
+        return "地区";
+    }
+}
\ No newline at end of file