diff --git a/src/main.js b/src/main.js
index a9b36909..5591690f 100644
--- a/src/main.js
+++ b/src/main.js
@@ -73,3 +73,66 @@ export function ExecDatabase(num) {
   })
 }
 // end--->
+
+// 哈希表
+export function HashTable() {
+  let size = 0
+  // eslint-disable-next-line no-new-object
+  let entry = new Object()
+  this.add = function(key, value) {
+    if (!this.containsKey(key)) {
+      size++
+    }
+    entry[key] = value
+  }
+  this.getValue = function(key) {
+    return this.containsKey(key) ? entry[key] : null
+  }
+  this.remove = function(key) {
+    if (this.containsKey(key) && (delete entry[key])) {
+      size--
+    }
+  }
+  this.containsKey = function(key) {
+    return (key in entry)
+  }
+  this.containsValue = function(value) {
+    for (const prop in entry) {
+      if (entry[prop] === value) {
+        return true
+      }
+    }
+    return false
+  }
+  this.getValues = function() {
+    // eslint-disable-next-line no-array-constructor
+    const values = new Array()
+    for (const prop in entry) {
+      values.push(entry[prop])
+    }
+    return values
+  }
+  // this.getKey = function(value) {
+  //   for (const prop in entry) {
+  //     if (entry[key]) {
+  //       return prop
+  //     }
+  //   }
+  // }
+  this.getKeys = function() {
+    // eslint-disable-next-line no-array-constructor
+    const keys = new Array()
+    for (const prop in entry) {
+      keys.push(prop)
+    }
+    return keys
+  }
+  this.getSize = function() {
+    return size
+  }
+  this.clear = function() {
+    size = 0
+    // eslint-disable-next-line no-new-object
+    entry = new Object()
+  }
+}