Regular Expression Inline highlighter on the web

regex-highlight

javascript:(/**Source: http://superuser.com/a/419272/256674**/function(){var count=0, text, regexp;text=prompt("Search regexp:", "");if(text==null || text.length==0)return;try{regexp=new RegExp("(" + text +")", "i");}catch(er){alert("Unable to create regular expression using text '"+text+"'.\n\n"+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("SPAN");spannode.style.backgroundColor="yellow";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()!="SCRIPT" && node.tagName.toUpperCase!="STYLE"){for (var child=0; child < node.childNodes.length; ++child){child=child+searchWithinNode(node.childNodes[child], re);}}return skip;}window.status="Searching for "+regexp+"...";searchWithinNode(document.body, regexp);window.status="Found "+count+" match"+(count==1?"":"es")+" for "+regexp+".";})();