点击分享至微信、空间、QQ和微信的javascript代码。

HTML代码部分：

<ul>
	<li class="wb">
		<a href="javascript:void(0);" onclick="shareUrl('weibo');">微博</a>
	</li>
	<li class="qz">
		<a href="javascript:void(0);" onclick="shareUrl('qzone');">QQ空间</a>
	</li>
	<li class="wx">
		<a href="javascript:void(0);">微信</a>
		<div class="qrcode">
			<div id="qrcode"></div>
			<div class="text">
				<p>用微信扫码二维码</p>
				<p>分享至好友和朋友圈</p>
			</div>
		</div>
	</li>
	<li class="qq">
		<a href="javascript:void(0);" onclick="shareUrl('qq');">QQ</a>
	</li>
</ul>

javascript代码部分：

function shareUrl(social){
	var _title = encodeURIComponent(document.title);
	var _url = document.location;
	var _pic = document.getElementsByTagName('img')[0].src;
	if(social == 'qzone'){				
		var _shareUrl = 'https://sns.qzone.qq.com/cgi-bin/qzshare/cgi_qzshare_onekey?url=' + _url + '&title=' + _title + '&pics=' + _pic + '&summary=&desc=';			
	}else if(social == 'weibo'){
		var _shareUrl = 'https://service.weibo.com/share/share.php?url=' + _url + '&title=' + _title + '&pic=' + _pic;
	}else if(social == 'qq'){
		var _shareUrl = 'https://connect.qq.com/widget/shareqq/index.html?url=' + _url +'&title=' + _title + '&pics=' + _pic + '&summary=&desc=';
	}
	window.open(_shareUrl,'_blank');
}

其中当前页面二维码图片可以借助jquery插件jquery.qrcode生成，插件自行搜索下载，调用代码如下：

<script type="text/javascript" src="js/jquery.qrcode.min.js"></script>
<script type="text/javascript">
$(function(){
	$('#qrcode').qrcode('http://www.neirong.org');
});
</script>