javascript 实现划词标记划词搜索功能

时间:2020-05-12 人气:0

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<html> 
<head> 
<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">

</head> 
<body> 
<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","</u>"); 
} 
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'>搜索相关</a>"; 
} 
else 
{ 
obj.style.display="none"; 
} 
} 
function adddiv() 
{ 
var mobj = document.createElement("div"); 
mobj.id="searchgoogle"; 
document.body.appendChild(mobj); 
} 
//--> 
</script> 
<INPUT type="button" onclick="isallow()" value="关闭/打开划词功能"> 
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</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]

在页面中加上这串代码就行了，同时还有搜索功能。

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