JS页内查找关键词的高亮显示
2009-05-30 00:00:00 来源：WEB开发网 <html>
<META HTTP-EQUIV="Content-Type" content="text/html; charset=gb_2312-80">
<TITLE>WinWebMail</TITLE>
<LINK href="images\hwem.css" rel=stylesheet>
<script language="JavaScript">
<!--
function doZoom(size){
document.getElementById('zoom').style.fontSize=size+'px'
}
var DOM = (document.getElementById) ? 1 : 0;
var NS4 = (document.layers) ? 1 : 0;
var IE4 = 0;
if (document.all)
{
IE4 = 1;
DOM = 0;
}
var win = window;
var n = 0;
function findIt() {
if (document.getElementById("searchstr").value != "")
findInPage(document.getElementById("searchstr").value);
}
function findInPage(str) {
var txt, i, found;
if (str == "")
return false;
if (DOM)
{
win.find(str, false, true);
return true;
}
if (NS4) {
if (!win.find(str))
while(win.find(str, false, true))
n++;
else
n++;
if (n == 0)
alert("未找到指定内容.");
}
if (IE4) {
txt = win.document.body.createTextRange();
for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
txt.moveStart("character", 1);
txt.moveEnd("textedit");
}
if (found) {
txt.moveStart("character", -1);
txt.findText(str);
txt.select();
txt.scrollIntoView();
n++;
}
else {
if (n > 0) {
n = 0;
findInPage(str);
}
else
alert("未找到指定内容.");
}
}
return false;
}
// -->
</script>
<BODY>
<br>
<div align="center">
<table width="90%" border="0" align="center" cellspacing="0" bgcolor="#EFF7FF" style='border:1px #8CA5B5 solid;' id="zoom">
<tr bgcolor="#DBEAF5">
<td height="50" style='border-bottom:1px #8CA5B5 solid;'>
<div align="center"><font class="s" color="#104A7B"><b>帮 助</b><a href="http://qmimi.100shang.com/">邱敏敏's blog QQ:7019908</a></div>
<div align="center">
<table width="98%"><tr><td align="left">
<input type="text" id="searchstr" name="searchstr" class="textbox" size="10">
<input type="button" value="页内查找" onclick="javascript:findIt();" class="sbttn">
</td><td align="right">
查看:[<a href="javascript:doZoom(16)">大字</a> <a href="javascript:doZoom(14)">中字</a> <a href="javascript:doZoom(12)">小字</a>]</font>
</td></tr></table>
</div>
</td>
</tr>
<tr>
<td> <br>
<font color="#FF3333">登录系统时的增强安全性</font><br>
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