详解为element-ui的Select和Cascader添加弹层底部操作按钮

} else {
ref.visible = false;
}
};
}
}
},

el-select

跟

el-cascader

的调用方式一致，这里以

el-cascader

举例

<el-cascader
  :options="cascaderOptions"
  v-model="cascaderValue"
  @visible-change="v => visibleChange(v, 'cascader', cascaderClick)"
  ref="cascader"
/>

如果调用的地方比较多，也可以像我一样封装成

mixins

const selectBottomAction = {
 methods: {
  /**
   * 为element-ui的Select和Cascader添加弹层底部操作按钮
   * @visible-change="v => selectBottomAction(v, {ref: 'select', label: '商品分类' , icon: 'el-icon-menu', click: goodsTypeManagement})"
   * @param visible
   * @param ref   设定的ref名称
   * @param click  底部操作按钮点击监听
   * @param label  标题
   * @param icon   图标class
   * @param arrow  是否显示箭头
   */
  selectBottomAction(visible, {ref, click, label = '', icon = '', arrow = false}) {
   if (visible) {
    const _ref = this.$refs[ref];
    let popper = _ref.$refs.popper;
    if (popper.$el) popper = popper.$el;
    if (!Array.from(popper.children).some(v => v.className === 'el-cascader-menu__list')) {
     const el = document.createElement('ul');
     el.className = 'el-cascader-menu__list';
     el.style = 'border-top: solid 1px #E4E7ED; padding: 0; color: #606266;';
     el.innerHTML = `<li class="el-cascader-node" style="height:38px;line-height: 38px">
     ${icon ? `<i class="${icon}"></i>` : ''}
     <span class="el-cascader-node__label">${label}</span>
     ${arrow ? '<i class="el-icon-arrow-right el-cascader-node__postfix"/>' : ''}
     </li>`;
     popper.appendChild(el);
     el.onclick = () => {
      click && click();
      if (_ref.toggleDropDownVisible) {
       _ref.toggleDropDownVisible(false);
      } else {
       _ref.visible = false;
      }
     };
    }
   }
  },
 },
};
export default selectBottomAction;

提示：后期可能会随着官方版本升级失效，谨慎使用