根据uniapp调整工程结构

components/AiTextarea.vue

@@ -0,0 +1,80 @@
+<template>
+  <section class="AiTextarea" :class="{border}">
+    <u-input type="textarea" v-bind="$attrs" :value="value" :maxlength="maxlength"
+             @input="handleInput" :disabled="disabled"/>
+    <div class="bottomBar">
+      <div class="leftPane">
+        <slot name="bar"/>
+      </div>
+      <div v-if="!!maxlength">{{ value.length }}/{{ maxlength }}</div>
+    </div>
+  </section>
+</template>
+
+<script>
+
+export default {
+  name: "AiTextarea",
+  model: {
+    prop: "value",
+    event: "change"
+  },
+  props: {
+    value: {default: ""},
+    maxlength: {default: 0},
+    border: Boolean,
+    disabled: Boolean
+  },
+  methods: {
+    handleInput(v) {
+      this.$emit('change', v)
+    }
+  }
+}
+</script>
+
+<style lang="scss" scoped>
+.AiTextarea {
+  width: 100%;
+  position: relative;
+
+  &.border {
+    ::v-deep textarea {
+      border-radius: 4px;
+      border: 1px solid #e2e1e1;
+      padding: 16px 16px 36px;
+      box-sizing: border-box;
+
+    }
+
+    .bottomBar {
+      position: absolute;
+      bottom: 8px;
+      right: 16px;
+    }
+
+    ::v-deep .u-input__right-icon {
+      position: absolute;
+      top: 50%;
+      right: 16px;
+      transform: translateY(-50%);
+    }
+  }
+
+  .bottomBar {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    min-height: 36px;
+    color: #999999;
+
+    .leftPane {
+      display: flex;
+
+      & > * + * {
+        margin-left: 32px;
+      }
+    }
+  }
+}
+</style>