javascript 实现划词标记划词搜索功能_javascript技巧

<title>javascript实现划词标记划词搜索功能 </title> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <script language="javascript"> <!-- document.body.onload=adddiv; document.onmousedown=recordobj; document.ondblclick=dbclick; document.onmouseup=showselect; var starobj,isdb=false,allow=true; function isallow() { if(allow){ allow=false; alert('is closed'); } else{ allow=true; alert('is opend'); } } function dbclick() { isdb=true; } function recordobj() { starobj=event.srcElement; } function showselect() { var str=""; if(event.srcElement.tagName!="A"&&event.srcElement.tagName!="INPUT"&&event.srcElement==starobj&&!isdb&&allow) { var oText=document.selection.createRange(); if(oText.text.length>0) { str=oText.text; oText.text="BuB"+oText.text+"EuE"; } oText.select(); event.srcElement.innerHTML=event.srcElement.innerHTML.replace("BuB","<u style='FONT-WEIGHT: bold;COLOR: #ff3366'>").replace("EuE",""); } searchgoogle(str) isdb=false; } function searchgoogle(str) { var obj=document.getElementById("searchgoogle"); if(str.length>0) { obj.style.display="block"; obj.style.position="absolute"; obj.style.zindex=999; obj.style.posTop=document.body.scrollTop+event.y-25; obj.style.posLeft=document.body.scrollLeft+event.x+5; obj.style.widht=80; obj.innerHTML="<a target=_blank href=http://www.google.com/search?ie=gbk&oe=gbk&q="+str+" style='BORDER-RIGHT: royalblue thin solid; BORDER-TOP: royalblue thin solid; FONT-WEIGHT: bold; BORDER-LEFT: royalblue thin solid; CLIP: rect(auto auto auto auto); COLOR: #ffffff; BORDER-BOTTOM: royalblue thin solid; BACKGROUND-COLOR: inactivecaption; TEXT-DECORATION: none'></script>