feat:新增 form 组件

resources/admin/components/catchForm/directive/selectLoadMore.js

@@ -0,0 +1,23 @@
+import { nextTick } from 'vue'
+
+const loadMore = (app) => {
+  app.directive('selectLoadMore', {
+    mounted: function (el, binding) {
+      nextTick(() => {
+        const dropdown = document.querySelector(`.${binding.arg} .el-select-dropdown__wrap`) // 获取下拉框元素
+
+        if (dropdown) {
+          dropdown.addEventListener('scroll', function () {
+            // 监听元素触底
+            const condition = this.scrollHeight - this.scrollTop - 5 <= this.clientHeight
+            if (condition) {
+              binding.value()
+            }
+          })
+        }
+      })
+    }
+  })
+}
+
+export default loadMore