新浪微博：
http://service.weibo.com/share/share.PHP?url= count=表示是否显示当前页面被分享数量(1显示)(可选，允许为空) &url=将页面地址转成短域名，并显示在内容文字后面。(可选，允许为空) &appkey=用于发布微博的来源显示，为空则分享的内容来源会显示来自互联网。(可选，允许为空) &title=分享时所示的文字内容，为空则自动抓取分享页面的title值(可选，允许为空) &pic=自定义图片地址，作为微博配图(可选，允许为空) &ralateUid=转发时会@相关的微博账号(可选，允许为空) &language=语言设置(zh_cn|zh_tw)(可选)
我自己写了一个，实现代码如下：
html部分如下：
<span id='aa'> <img src="http://t.sina.com.cn/favicon.ico" alt="新浪微博分享" border="0">分享到新浪微博 </span>
js部分如下：
var title = "AAAA";
var url = 'http://www.taobao.com';
var pic = 'http://t.sina.com.cn/favicon.ico';
var href ='http://v.t.sina.com.cn/share/share.php?title="+title+"&url='+url+'&pic='+pic;
$('#aa').click(function(){
window.open(href,'_blank')
})
Facebook分享按钮代码：
<script>function fbs_click() {u=location.href;t=document.title;window.open(‘http://www.facebook.com/sharer.php?u=’+encodeURIComponent(u)+’&t=’+encodeURIComponent(t),’sharer’,'toolbar=0,status=0,width=626,height=436′);return false;}</script><a href=”http://www.facebook.com/share.php?u=<url>” onclick=”return fbs_click()” target=”_blank”><img src=”ADD_IMAGE_URL_HERE” alt=”Share on Facebook” /></a>
Twitter分享按钮代码：
<a href=”http://twitter.com/home?status=Currentlyreading <?php the_permalink(); ?>” title=”Click to share this post on Twitter”"><img src=”ADD_IMAGE_URL_HERE” alt=”Share on Twitter”></a>
1,分享到人人网：
<a class="fav_renren" rel="nofollow" href="JavaScript:window.open('http://share.renren.com/share /buttonshare.do?link='+encodeURIComponent(document.location.href)+'& amp;title="+encodeURIComponent(document.title));void(0)">人人网</a>
2,添加到百度收藏：
<a class="fav_baidu" rel="nofollow" href="javascript:window.open('http://cang.baidu.com/do/add?it='+encodeURIComponent(document.title.substring(0,76))+'&iu='+encodeURIComponent(location.href)+'&fr=ien#nw=1','scrollbars=no,width=600,height=450,left=75,top=20,status=no,resizable=yes'); void 0">百度搜藏</a>
3,分享到开心网：
<a class="fav_kaixin" rel="nofollow" href="javascript:window.open('http://www.kaixin001.com/repaste /share.php?rtitle="+encodeURIComponent(document.title)+"& rurl='+encodeURIComponent(document.location.href)+'&rcontent='); void(0)">开心网</a>
4,推荐到豆瓣网：
<a class="fav_douban" rel="nofollow" href="javascript:void(function(){var%20d=document,e=encodeURIComponent,s1=window.getSelection,s2=d.getSelection,s3=d.selection,s=s1?s1():s2?s2():s3?s3.createRange().text:'',r='http://www.douban.com/recommend/?url='+e(d.location.href)+'&title="+e(d.title)+"&sel='+e(s)+'&v=1',x=function(){if(!window.open(r,'douban','toolbar=0,resizable=1,scrollbars=yes,status=1,width=450,height=330'))location.href=r+'&r=1'};if(/Firefox/.test(navigator.userAgent)){setTimeout(x,0)}else{x()}})()"></a>
或者用这个：
<a class="fav_douban" rel="nofollow" href="javascript:window.open('http://www.douban.com/recommend /?url='+encodeURIComponent(document.location.href)+'& title="+encodeURIComponent(document.title));void(0)">豆瓣</a>
5,添加QQ书签：
<a class="fav_qq" rel="nofollow" href="javascript:window.open('http://shuqian.qq.com/post?from=3& title="+encodeURIComponent(document.title)+"& uri='+encodeURIComponent(document.location.href)+'&jumpback=2& amp;amp;noui=1','favit','width=930,height=470,left=50,top=50,toolbar=no,menubar=no,location=no,scrollbars=yes,status=yes,resizable=yes'); void(0)">QQ书签</a>
6,添加到GOOGLE书签：
<a class="fav_google" rel="nofollow" href="javascript:window.open('http://www.google.com/bookmarks/mark?op=add&bkmk='+encodeURIComponent(document.location.href)+'&title="+encodeURIComponent(document.title));void(0)">Google</a>
7,分享到Twitter：
<a class="fav_twitter" rel="nofollow" href="javascript:window.open('http://twitter.com/home?status='+encodeURIComponent(document.location.href)+' '+encodeURIComponent(document.title));void(0)">Twitter</a>
8,分享到Facebook：
<a class="fav_facebook" rel="nofollow" href="javascript:window.open('http://www.facebook.com/sharer.php?u='+encodeURIComponent(document.location.href)+'&t='+encodeURIComponent(document.title));void(0)">Facebook</a>
9,Delicious书签：
<a class="fav_delicious" rel="nofollow" href="javascript:window.open('http://del.icio.us/post?url='+encodeURIComponent(document.location.href)+'&title="+encodeURIComponent(document.title)+"&notes=');void(0)">Delicious</a>
10.分享到yahoo
<a class="fav_delicious" rel="nofollow" href="javascript:window.open('http://myweb2.search.yahoo.com/myresults/bookmarklet?u='+encodeURIComponent(document.location.href)+'&t='+encodeURIComponent(document.title)+'&notes=');void(0)">Yahoo</a>
11.分享到微信朋友圈
一般我们是将这个网页生成二维码，让用户扫码在手机上打开网页。再利用微信右上角本身有的分享到朋友圈以及分享给朋友，聊天组等功能，所以一般我们掌握当前网页自动生成二维码的代码就可以了
<script type="text/javascript"> thisURL = document.URL; strwrite = "<img src='https://chart.googleapis.com/chart?cht=qr&chs=150x150&choe=UTF-8&chld=L|4&chl=" +thisURL+"' width='150' height='150' alt="网址URL 二维码生成" />"; document.write( strwrite ); </script>这里chs=150x150是指生成的二维码内容尺寸；width='150' height='150'指的是二维码图片大小，值越大 空白边框就越大；