商品详情页面实现点击收藏，取消收藏

html代码：

<!-- 收藏商品 -->
		{if condition="$is_member_fav_goods == 0"}
		<a href="/go.html?url=javascript:;" class="new-btn buy-cart fav" onclick="collectionGoods({$goods_detail.goods_id},'goods','{$goods_detail.goods_name}',this);" data-log-id="{$is_member_fav_goods}">
			<i class="fa fa-heart-o" aria-hidden="true"></i>
			<span class="desc">收藏</span>
		</a>
		{else/}
		<a href="/go.html?url=javascript:;" class="new-btn buy-cart fav" onclick="collectionGoods({$goods_detail.goods_id},'goods','{$goods_detail.goods_name}',this);" data-log-id="{$is_member_fav_goods}">
			<i class="fa fa-heart" aria-hidden="true"></i>
			<span class="desc">收藏</span>
		</a>
		{/if}<!-- 收藏商品 -->
		{if condition="$is