StackOverflow2013

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PO
primarykey
Id
16007425
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2013-04-15T03:53:56.487
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2013-04-15T04:01:07.673
LastEditDate
2013-04-15T04:01:07.673
LastEditorUserId
570812
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570812
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16007050
PostTypeId
2
Score
0
ViewCount
0
LastEditorDisplayName
text
Body
After some try-and-fail, I made a working demo that may be more complicated than you might have think: <a href="http://jsfiddle.net/4VKNk/" rel="nofollow">http://jsfiddle.net/4VKNk/</a> <pre><code>var cache=[]; var reg=/idm/gi; var id=function(ID){return document.getElementById(ID);} function walkElement(ele){ if(ele.childNodes.length>0){ for(var i=0;i<ele.childNodes.length;i++){ walkElement(ele.childNodes[i]); } }else if(ele.nodeType==3){//text node if(reg.test(ele.nodeValue)){ cache.push(ele); } } } id("test").onclick=function(){ cache=[]; walkElement(id("SR")); while(cache.length>0){ var ele=cache.shift(); var val=ele.nodeValue; var pnt=ele.parentNode; var nextSibling=ele.nextSibling; var i=0; var r,tmp; pnt.removeChild(ele); while(r=reg.exec(val)){ tmp=document.createTextNode(val.substring(i,r.index)); if(nextSibling){ pnt.insertBefore(tmp,nextSibling); tmp=document.createElement("strong"); tmp.appendChild(document.createTextNode("idm")); pnt.insertBefore(tmp,nextSibling); }else{ pnt.appendChild(tmp); tmp=document.createElement("strong"); tmp.appendChild(document.createTextNode("idm")); pnt.appendChild(tmp); } i=reg.lastIndex; } if(i<val.length-1){ tmp=document.createTextNode(val.substring(i,val.length)); if(nextSibling){ pnt.insertBefore(tmp,nextSibling); }else{ pnt.appendChild(tmp); } } } }; </code></pre> I took the approach of DOM manipulation. Explanation: <ol> <li>Walk through the whole DOM tree under target element, and cache all TEXT_NODE (<code>nodeType==3</code>);</li> <li>Use <code>RegExp.exec()</code> method to get the index of each match;</li> <li>While you find a match, add back the text that come before it, and then add a highlight element (<code></code>) that contains the match; continue this step;</li> <li>If we still have text left, add it back.</li> </ol> The reason I need to cache the TEXT_NODEs first, is that if we directly modify it in <code>walkElement</code>, it will change <code>childNodes.length</code> of its parent, and break the process.
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1. This table or related slice is empty.
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1. POMake a text Highlight using javascript
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1. PTAnswer
UserLastEditorUserId
1. USPasserby
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1. USPasserby
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