1.在el-dropdown-item添加click方法

<el-dropdown-item @click.native="handleCancel(scope.row)">取消
</el-dropdown-item>

2.禁止点击

<el-dropdown-item @click.native="handleCancel(scope.row)" :disabled="scope.row.status !== '1'">取消
</el-dropdown-item>

	handleCancel(row) {
			if (row.status !== '1') {
				return;
			} else {
				......
		},