html obtain custom property value

</a> <a class="tw-btn-danger" onclick="del(this)" abc="${items.xxtx_id}"
	title="确定要删除吗?" warn="请选择一个对象"> <i
		class="tw-icon-minus-circle"></i> 删除
</a>

function update(num){
		var id = num.getAttribute("abc");

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Origin blog.csdn.net/nuoyuezuo/article/details/90606574