first

node_modules/vant/es/mixins/bind-event.js

@@ -0,0 +1,29 @@
+/**
+ * Bind event when mounted or activated
+ */
+import { on, off } from '../utils/dom/event';
+var uid = 0;
+export function BindEventMixin(handler) {
+  var key = "binded_" + uid++;
+
+  function bind() {
+    if (!this[key]) {
+      handler.call(this, on, true);
+      this[key] = true;
+    }
+  }
+
+  function unbind() {
+    if (this[key]) {
+      handler.call(this, off, false);
+      this[key] = false;
+    }
+  }
+
+  return {
+    mounted: bind,
+    activated: bind,
+    deactivated: unbind,
+    beforeDestroy: unbind
+  };
+}