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📁 简单的讲解语言,非常实用,使你在短期内就能熟练掌握其变成技巧
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<html>
<head>
<title>洪恩在线 - Javascript实例</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="../homepage.css">
<SCRIPT Language="JavaScript">
var msg="欢迎光临  洪恩在线  电脑乐园";
var interval = 300;
seq = 0;
function Scroll() {
len = msg.length;
window.status = msg.substring(0, seq+1);
seq++;
if ( seq >= len ) { seq = 0 };
window.setTimeout("Scroll();", interval );
} 
</SCRIPT>
</head>

<body bgcolor="#FFFFFF" onload="Scroll()"><script language="Javascript" src="/pub/js/head.js"></script>
<table width="760" height="20" border=0 cellspacing="0" cellpadding="0" align="center" >
  <tr bgcolor="CFDFFF"> 
    <td height=20 class="p1" align="left"><img src="/pc/img/blank.gif" width="12" height="8"><font color="#000000"><font color="#FF9966">当前位置</font>：<a href="/default.htm" class="under">洪恩在线</a> 
      -&gt; <a href="/pc/index.htm" class="under">电脑乐园</a> -&gt; JavaScript实例</font></td>
  </tr>
</table> 
    
<table width="760" border=0 cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td width="207" valign="top"><img src="img/bule.gif" width="207" height="13"></td>
    <td bgcolor="A8A8AB" width="1"><img src="img/blank.gif" width="1" height="1"></td>
    <td align="right" height="22" width=530><img src="img/js.gif" width="186" height="20"></td>
    <td width="22"><img src="img/blank.gif" width="1" height="1"></td>
  </tr>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td width="124"><img src="img/blank.gif" width="1" height="1"></td>
    <td background="img/line.gif" height="27" width=636><img src="img/blank.gif" width="1" height="1"></td>
  </tr>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td class=p3 align="center" width=711><b>　　　　跑 马 灯 效 果</b></td>
    <td class="p2" width="1" bgcolor="A8A8AB"><img src="img/blank.gif" width="1" height="1"></td>
    <td class="p2" width="48">&nbsp;</td>
  </tr>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td align="center" valign="top">&nbsp;</td>
    <td>&nbsp;</td>
    <td bgcolor="5F74BF" width="28" align="center"><img src="img/bule1.gif" width="28" height="49"></td>
    <td width="37" align="center">&nbsp;</td>
  </tr>
  <tr> 
    <td align="center" valign="top"> 
      <table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr align="center"> 
          <td> 
            <table width="110" border="0" cellspacing="0" cellpadding="0">
              <tr bgcolor="5F74BF" align="center"> 
                <td class="p1" align="right"><b><font color="#FFFFFF">效 果 演 示</font></b><font color="#FFFFFF">：</font></td>
                <td class="p1" width="11"><img src="img/bule2.gif" width="11" height="18"></td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </td>
    <td class=p2 align="left" > 
      
      <p>&nbsp;</p>
      <p><font color="#FF6666"><b>请看屏幕底下的状态栏！</b></font></p>
      <p>　</p>
      
    </td>
    <td bgcolor="5F74BF" width="28" align="center">&nbsp;</td>
    <td width="37" align="center">&nbsp;</td>
  </tr>
  <tr> 
    <td align="center" valign="top"> 
      <table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr> 
          <td height="15">&nbsp;</td>
        </tr>
        <tr align="center"> 
          <td> 
            <table width="110" border="0" cellspacing="0" cellpadding="0">
              <tr bgcolor="5F74BF" align="center"> 
                <td class="p1" align="right"><b><font color="#FFFFFF">源代码如下</font></b><font color="#FFFFFF">：</font></td>
                <td class="p1" width="11"><img src="img/bule2.gif" width="11" height="18"></td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </td>
    <td width="457" class="p2" valign="top"><b><br>
      <br>
      </b><span class="p1"><font color="#6633FF"> </font></span><b><br>
      </b>
      <form>
        <p><span class="p1"><font color="#6633FF">这段程序放在&lt;head&gt;与&lt;/head&gt;之间</font></span></p>
        <p> 
          <textarea name="textarea" onFocus="this.select()" onMouseOver="this.focus()" cols="50" rows="10" wrap="VIRTUAL" style="BACKGROUND-COLOR: #D5E9FD;" >&lt;SCRIPT Language=&quot;JavaScript&quot;&gt;
var msg=&quot;欢迎光临  洪恩在线  电脑乐园&quot;;
var interval = 300;
seq = 0;
function Scroll() {
len = msg.length;
window.status = msg.substring(0, seq+1);
seq++;
if ( seq &gt;= len ) { seq = 0 };
window.setTimeout(&quot;Scroll();&quot;, interval );
} 
&lt;/SCRIPT&gt;</textarea>
        </p>
        <p><span class="p1"><font color="#6633FF">这段程序放在&lt;body ****&gt;正文中</font></span></p>
        <p>
          <textarea name="textarea2" onFocus="this.select()" onMouseOver="this.focus()" cols="50" rows="2" wrap="VIRTUAL" style="BACKGROUND-COLOR: #D5E9FD;" >onload=&quot;Scroll()&quot;</textarea>
        </p>
      </form>
      <b> </b></td>
    <td bgcolor="5F74BF" width="28" align="center">&nbsp;</td>
    <td width="37" align="center">&nbsp;</td>
  </tr>
  <tr>
    <td align="center" valign="bottom" height="36"> 
      <table width="238" border="0" cellspacing="0" cellpadding="0">
        <tr align="center"> 
          <td> 
            <table width="110" border="0" cellspacing="0" cellpadding="0">
              <tr bgcolor="5F74BF" align="center"> 
                <td class="p1" align="right"><b><font color="#FFFFFF">源程序讲解：</font></b></td>
                <td class="p1" width="11"><img src="img/bule2.gif" width="11" height="18"></td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
    </td>
    <td width="457" class="p2" valign="top" height="36">&nbsp;</td>
    <td bgcolor="5F74BF" width="28" align="center" height="36"><img src="img/bule1.gif" width="28" height="49"></td>
    <td width="37" align="center" height="36">&nbsp;</td>
  </tr>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td class="p2" align="right" width="693"> <br>
      <table width="650" border="0" cellspacing="0" cellpadding="0">
        <tr> 
          <td> 
            <table width="100%" border="1" cellspacing="1" cellpadding="1" bordercolorlight="#666666" bordercolordark="#666666" class=p2>
              <tr> 
                <td width="330">var msg="欢迎光临 洪恩在线 电脑乐园" <br>
                </td>
                <td width="430">声明一个变量。</td>
              </tr>
              <tr bgcolor="CFDFFF"> 
                <td width="330">var interval = 300;<br>
                </td>
                <td width="430">声明一个变量，设置一个时间间隔为300毫秒。</td>
              </tr>
              <tr> 
                <td width="330">seq = 0;<br>
                </td>
                <td width="430">赋给seq初值为0。</td>
              </tr>
              <tr bgcolor="CFDFFF"> 
                <td width="330">function Scroll()<br>
                </td>
                <td width="430">定义一个函数。</td>
              </tr>
              <tr> 
                <td width="330">{ len = msg.length;<br>
                  window.status = msg.substring(0, seq+1); seq++; <br>
                </td>
                <td width="430">len的值为字符串msg的长度，在状态栏上显示msg的第一到第seq+个字符，seq每次递加。</td>
              </tr>
              <tr bgcolor="CFDFFF"> 
                <td width="330">if ( seq >= len )<br>
                  { seq = 0 };<br>
                </td>
                <td width="430">当seq的长度大于等于msg的字符长度时，seq=0。</td>
              </tr>
              <tr> 
                <td width="330">window.setTimeout("Scroll();", interval ); } </td>
                <td width="430">每300毫秒调用一次Scroll函数，即每300毫秒出一个字。</td>
              </tr>
            </table>
          </td>
        </tr>
      </table>
      <br>
      <br>
    </td>
    <td class="p2" width="18">&nbsp;</td>
    <td class="p2" width="1" bgcolor="A8A8AB"><img src="img/blank.gif" width="1" height="1"></td>
    <td class="p2" width="48">&nbsp;</td>
  </tr>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr bgcolor="5F74BF"> 
    <td>&nbsp;</td>
  </tr>
</table>
<p>&nbsp;</p>
</body>
</html>

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