JS 頁面內容搜索，類似于 Ctrl+F功能的實現代碼
2024-09-06 12:41:47
供稿：網友
<html>
<META HTTP-EQUIV="Content-Type" content="text/html; charset=gb_2312-80">
<TITLE>WinWebMail</TITLE>
<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("未找到指定內容.");
}
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);
}
