分享几段实用js

高亮当前网页所有链接，站内为红色，站外为蓝色，锚链接为橙色。SEOer实用

javascript:(function(){var i,x; for (i=0;x=document.links[i];++i)x.style.color=['blue','red','orange'][sim(x,location)]; function sim(a,b) { if (a.hostname!=b.hostname) return 0; if (fixPath(a.pathname)!=fixPath(b.pathname) || a.search!=b.search) return 1; return 2; } function fixPath(p){ p = (p.charAt(0)=='/' ? '' : '/') + p;/*many browsers*/ p=p.split('?')[0];/*opera*/ return p; } })()

高亮关键词

javascript:%20(%20function%20()%7B%20var%20count=0,%20text,%20dv;text=prompt%20(%20%22%E8%AF%B7%E8%BE%93%E5%85%A5%E9%AB%98%E4%BA%AE%E5%85%B3%E9%94%AE%E8%AF%8D:%22,%20%22%22%20)%20;if%20(%20text==null%20%20%7C%7C%20%20text.length==0%20)%20return;dv=document.defaultView;function%20searchWithinNode%20(%20node,%20te,%20len%20)%7B%20var%20pos,%20skip,%20spannode,%20middlebit,%20endbit,%20middleclone;skip=0;if%20(%20%20node.nodeType==3%20%20)%7B%20pos=node.data.toUpperCase%20()%20.indexOf%20(%20te%20)%20;if%20(%20pos%3E=0%20)%7B%20spannode=document.createElement%20(%20%22SPAN%22%20)%20;spannode.style.backgroundColor=%22yellow%22;middlebit=node.splitText%20(%20pos%20)%20;endbit=middlebit.splitText%20(%20len%20)%20;middleclone=middlebit.cloneNode%20(%20true%20)%20;spannode.appendChild%20(%20middleclone%20)%20;middlebit.parentNode.replaceChild%20(%20spannode,middlebit%20)%20;++count;skip=1;%20%7D%7D%20else%20if%20(%20%20node.nodeType==1&&%20node.childNodes%20&&%20node.tagName.toUpperCase%20()%20!=%22SCRIPT%22%20&&%20node.tagName.toUpperCase!=%22STYLE%22%20)%7B%20for%20%20(%20var%20child=0;%20child%20%3C%20%20node.childNodes.length;%20++child%20)%7B%20child=child+searchWithinNode%20(%20node.childNodes%5Bchild%5D,%20te,%20len%20)%20;%20%7D%7D%20return%20skip;%20%7D%20window.status=%22Searching%20for%20'%22+text+%22'...%22;searchWithinNode%20(%20document.body,%20text.toUpperCase%20()%20,%20text.length%20)%20;window.status=%22Found%20%22+count+%22%20occurrence%22+%20(%20count==1?%22%22:%22s%22%20)%20+%22%20of%20'%22+text+%22'.%22;%20%7D)()%20;

高亮关键词(支持正则)

javascript:(function(){var count=0, text, regexp;text=prompt(%22Search regexp:%22, %22%22);if(text==null || text.length==0)return;try{regexp=new RegExp(%22(%22 + text +%22)%22, %22i%22);}catch(er){alert(%22Unable to create regular expression using text '%22+text+%22'.\n\n%22+er);return;}function searchWithinNode(node, re){var pos, skip, spannode, middlebit, endbit, middleclone;skip=0;if( node.nodeType==3 ){pos=node.data.search(re);if(pos>=0){spannode=document.createElement(%22SPAN%22);spannode.style.backgroundColor=%22yellow%22;middlebit=node.splitText(pos);endbit=middlebit.splitText(RegExp.$1.length);middleclone=middlebit.cloneNode(true);spannode.appendChild(middleclone);middlebit.parentNode.replaceChild(spannode,middlebit);++count;skip=1;}}else if( node.nodeType==1 && node.childNodes && node.tagName.toUpperCase()!=%22SCRIPT%22 && node.tagName.toUpperCase!=%22STYLE%22){for (var child=0; child < node.childNodes.length; ++child){child=child+searchWithinNode(node.childNodes[child], re);}}return skip;}window.status=%22Searching for %22+regexp+%22...%22;searchWithinNode(document.body, regexp);window.status=%22Found %22+count+%22 match%22+(count==1?%22%22:%22es%22)+%22 for %22+regexp+%22.%22;})();

黑底白字阅读: 修改字体颜色为黑色，同时将背景设置为白色。当然颜色代码可以自己改，，再配合via脚本管理，可以设置作用域。

javascript:(function(){var b=document.getElementsByTagName('*');for(var    i=0;i<b.length;i++){b[i].style.backgroundImage='none';b   [i].style.backgroundColor='#FFFFFF';b[i].style.color='#000000'}})()

使用方法: 添加到书签即可，记得把 "新标签页打开收藏夹" 选项去掉
坏孩子，其实你很好，但是还不够好