vue element 修改form label

 <el-form-item   prop="productCode">
                       <span slot="label">增值税发票备注：<br>
<el-checkbox v-model="checked" disabled="true">富国开票备注</el-checkbox>
</span>
                                 <el-input type="textarea" ></el-input>

	</el-form-item>



	





	加了slot功能 span

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