全局数字验证

src/components/AmountInputBox/index.js

@@ -0,0 +1,11 @@
+import AmountInputBox from './AmountInputBox.js'
+const directives = [AmountInputBox]
+export default {
+  install: Vue => {
+    if (directives.length && directives.length > 0) {
+      directives.map(item => {
+        Vue.directive(item.key, item.func)
+      })
+    }
+  }
+}