element ui 获取表格列数

要获取Element UI表格的列数，可以使用`<el-table>`组件的`$refs`属性来获取表格实例，然后通过实例的`columns`属性来获取列数。

以下是一个示例代码：

<template>
  <el-table ref="myTable" :data="tableData">
    <el-table-column prop="name" label="姓名"></el-table-column>
    <el-table-column prop="age" label="年龄"></el-table-column>
    <el-table-column prop="gender" label="性别"></el-table-column>
  </el-table>
</template>

<script>
export default {
  data() {
    return {
      tableData: [
        { name: '张三', age: 18, gender: '男' },
        { name: '李四', age: 20, gender: '女' },
        { name: '王五', age: 22, gender: '男' },
      ]
    };
  },
  mounted() {
    const columnCount = this.$refs.myTable.columns.length;
    console.log('列数：', columnCount);
  }
};
</script>

在上面的代码中，我们使用了`<el-table>`组件，并设置了三个列。在`mounted`生命周期钩子函数中，我们通过`this.$refs.myTable.columns.length`获取了表格的列数，并打印输出了列数。使用这种方法，您可以获取Element UI表格的列数。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [element ui table 表格合并](https://blog.csdn.net/Chq_Niggo1995/article/details/126946066)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [element ui 表格的序号](https://blog.csdn.net/weixin_49986131/article/details/122574357)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [vuejs+element UI点击编辑表格某一行时获取内容填入表单的示例](https://download.csdn.net/download/weixin_38746515/12950353)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
[ .reference_list ]