网络整理的选择文字转发到微博的JS，以备后用。
直接引入，把需要实现选择转发的标签块改掉就可以实现效果。
1 var sinaImg = '<img style="display: none; cursor: pointer; position: absolute; 26px; height:26px;" id="imgSinaShare" title="将选中内容分享到新浪微博" src="http://simg.sinajs.cn/blog7style/images/common/share.gif"/>'; 2 var qqImg = '<img style="display: none; cursor: pointer; position: absolute; 25px; height:25px;" id="imgQqShare" title="将选中内容分享到腾讯微博" src="http://open.t.qq.com/images/resource/weiboicon32.png">'; 3 document.write(sinaImg); 4 document.write(qqImg); 5 var sinaImgShare = document.getElementById("imgSinaShare"); 6 var qqImgShare = document.getElementById("imgQqShare"); 7 var artMain = document.getElementById("share"); //需要实现选择转发到微博的标签块 8 var $miniBlogShare = function(sinaShare, qqShare, eleContainer) { 9 var eleTitle = document.getElementsByTagName("title")[0]; 10 eleContainer = eleContainer || document; 11 var funGetSelectTxt = function() { 12 var txt = ""; 13 if (document.selection) { 14 txt = document.selection.createRange().text; 15 } else { 16 txt = document.getSelection(); 17 } 18 return txt.toString(); 19 }; 20 eleContainer.onmouseup = function(e) { 21 e = e || window.event; 22 var txt = funGetSelectTxt(), 23 sh = window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop || 0; 24 var left = (e.clientX - 40 < 0) ? e.clientX + 20: e.clientX - 40, 25 top = (e.clientY - 40 < 0) ? e.clientY + sh + 20: e.clientY + sh - 40; 26 if (txt) { 27 sinaShare.style.display = "inline"; 28 sinaShare.style.left = left + "px"; 29 sinaShare.style.top = top + "px"; 30 qqShare.style.display = "inline"; 31 qqShare.style.left = left + 30 + "px"; 32 qqShare.style.top = top + "px"; 33 } else { 34 sinaShare.style.display = "none"; 35 qqShare.style.display = "none"; 36 } 37 }; 38 sinaShare.onclick = function() { 39 var txt = funGetSelectTxt(), 40 title = (eleTitle && eleTitle.innerHTML) ? eleTitle.innerHTML: "未命名页面"; 41 if (txt) { 42 window.open('http://v.t.sina.com.cn/share/share.php?ralateuid=2719305811&title=' + txt + '→来自页面"' + title + '"的文字片段&url=' + window.location.href); 43 } 44 }; 45 qqShare.onclick = function() { 46 var txt = funGetSelectTxt(), 47 title = (eleTitle && eleTitle.innerHTML) ? eleTitle.innerHTML: "未命名页面"; 48 if (txt) { 49 window.open('http://v.t.qq.com/share/share.php?title=' + encodeURIComponent(txt + '→来自页面"' + title + '"的文字片段&url=' + window.location.href)); 50 } 51 }; 52 } (sinaImgShare, qqImgShare, artMain);