查找页面中的字符-JS特效-爱易网页

查找页面中的字符

日期：2014-05-18　浏览次数：20252 次

欢迎光临爱易网网页脚本特效中心，点击运行按钮演示特效：

以下是程序代码

<html>

<head>
<title>爱易网网页特效演示，查找页面中的字符</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

</head>

<table bgcolor="#000000" cellspacing="1" width="500" align="center">
<tbody>
  <tr>
    <td bgcolor="#4775c3" align="center"><strong style="font-weight: 400">
    <font color="#FFFFFF" face="宋体" style="font-size: 9pt">查找页面中的字符</font></strong></td>
  </tr>
</tbody>
</table>

</td>
    <td align="left" valign="top" width="304"><font face="宋体" size="4"
    color="#FF0000">   </font></td>
  </tr>
  <tr>
    <td align="left" width="340" valign="top"><font face="宋体" color="#FF0000">    
      <span style="font-size: 9pt">在页面中实现搜索功能，类似Word等文本编辑软件里的搜索功能，只要是页面中的字符（别管是显在的还是隐蔽在文本框内部的），用这个都能找出来，从此，你的网页中又多了一个强大的不同寻常的工具。</span></font></td>
    <td align="left" width="109" valign="top"><font face="宋体" color="#FF0000">   </font></td>
    <td align="left" valign="top" width="304">   
    <span style="font-size: 9pt">你可以输入“脚本”一词查查看(共有三处)

var NS4 = (document.layers);    // Which browser?
var IE4 = (document.all);

var win = window;    // window to search.
var n   = 0;

function findInPage(str) {

var txt, i, found;

if (str == "")
    return false;

// Find next occurance of the given string on the page, wrap around to the
  // start of the page if necessary.

if (NS4) {

// Look for match starting at the current point. If not found, rewind
    // back to the first match.

if (!win.find(str))
      while(win.find(str, false, true))
        n++;
    else
      n++;

// If not found in either direction, give message.

if (n == 0)
      alert("Not found.");
  }

if (IE4) {
    txt = win.document.body.createTextRange();

// Find the nth match from the top of the page.

for (i = 0; i <= n && (found = txt.findText(str)) != false; i++) {
      txt.moveStart("character", 1);
      txt.moveEnd("textedit");
    }

// If found, mark it and scroll it into view.

if (found) {
      txt.moveStart("character", -1);
      txt.findText(str);
      txt.select();
      txt.scrollIntoView();
      n++;
    }

// Otherwise, start over at the top of the page and find first match.

else {
      if (n > 0) {
        n = 0;
        findInPage(str);
      }

// Not found anywhere, give message.

else
        alert("Not found.");
    }
  }

return false;
}

</script> </span> <form name="search"
    onSubmit="return findInPage(this.string.value);">
      <p align="center">
      <font size="3"><input name="string" type="text" size="15" onChange="n = 0;"></font> <input 
      type="submit" value="Find"> 
 
    </form> 
    </td> 
  </tr> 
</table> 
<div align="center">
<table width="500">
<tbody>

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