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📁 JavaScript实例
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<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="../homepage.css">
<style>
.spanstyle {
	position:absolute;
	visibility:visible;
	top:-50px;
	font-size:10pt;
	font-family:Verdana;
      font-weight:bold;
	color:black;
}
</style>
<script language=javascript>
var x,y
var step=20
var flag=0

var message="洪恩在线 求知无限 "
message=message.split("")

var xpos=new Array()
for (i=0;i<=message.length-1;i++) {
	xpos[i]=-50
}

var ypos=new Array()
for (i=0;i<=message.length-1;i++) {
	ypos[i]=-50
}

function handlerMM(e){
	x = (document.layers) ? e.pageX : document.body.scrollLeft+event.clientX
	y = (document.layers) ? e.pageY : document.body.scrollTop+event.clientY
	flag=1
}

function makesnake() {
	if (flag==1 && document.all) {
 	   	for (i=message.length-1; i>=1; i--) {
   			xpos[i]=xpos[i-1]+step
			ypos[i]=ypos[i-1]
	    	}
		xpos[0]=x+step
		ypos[0]=y
	
		for (i=0; i<message.length-1; i++) {
    			var thisspan = eval("span"+(i)+".style")
    			thisspan.posLeft=xpos[i]
			thisspan.posTop=ypos[i]
    		}
	}
	else if (flag==1 && document.layers) {
    		for (i=message.length-1; i>=1; i--) {
   				xpos[i]=xpos[i-1]+step
				ypos[i]=ypos[i-1]
    		}
		xpos[0]=x+step
		ypos[0]=y
	
		for (i=0; i<message.length-1; i++) {
    			var thisspan = eval("document.span"+i)
    			thisspan.left=xpos[i]
			thisspan.top=ypos[i]
    		}
	}
	var timer=setTimeout("makesnake()",30)
}

</script>
</head>

<body bgcolor="#FFFFFF" leftmargin="0" marginwidth="0"
onLoad="makesnake()" style="width:100%;overflow-x:hidden;overflow-y: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</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>    文 字 跟 随 鼠 标</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><b><font color="#FF6666"> <strong><font face="Verdana">
        <script language=javascript>
<!-- Beginning of JavaScript -

for (i=0;i<=message.length-1;i++) {
    document.write("<span id='span"+i+"' class='spanstyle'>")
	document.write(message[i])
    document.write("</span>")
}

if (document.layers){
	document.captureEvents(Event.MOUSEMOVE);
}
document.onmousemove = handlerMM;

// - End of JavaScript - -->
</script>
        </font></strong>看看你的鼠标有没有变化?</font></b><font color="#FF6666"><b></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="30">&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="textarea2" onFocus="this.select()" onMouseOver="this.focus()" cols="50" rows="15" wrap="VIRTUAL" style="BACKGROUND-COLOR: #D5E9FD;" >&lt;style&gt;
.spanstyle {
	position:absolute;
	visibility:visible;
	top:-50px;
	font-size:10pt;
	font-family:Verdana;
      font-weight:bold;
	color:black;
}
&lt;/style&gt;
&lt;script&gt;

var x,y
var step=20
var flag=0

// Your snappy message. Important: the space at the end of the sentence!!!
var message=&quot;洪恩在线 求知无限 &quot;
message=message.split(&quot;&quot;)

var xpos=new Array()
for (i=0;i&lt;=message.length-1;i++) {
	xpos[i]=-50
}

var ypos=new Array()
for (i=0;i&lt;=message.length-1;i++) {
	ypos[i]=-50
}

function handlerMM(e){
	x = (document.layers) ? e.pageX : document.body.scrollLeft+event.clientX
	y = (document.layers) ? e.pageY : document.body.scrollTop+event.clientY
	flag=1
}

function makesnake() {
	if (flag==1 &amp;&amp; document.all) {
 	   	for (i=message.length-1; i&gt;=1; i--) {
   			xpos[i]=xpos[i-1]+step
			ypos[i]=ypos[i-1]
	    	}
		xpos[0]=x+step
		ypos[0]=y
	
		for (i=0; i&lt;message.length-1; i++) {
    			var thisspan = eval(&quot;span&quot;+(i)+&quot;.style&quot;)
    			thisspan.posLeft=xpos[i]
			thisspan.posTop=ypos[i]
    		}
	}
	else if (flag==1 &amp;&amp; document.layers) {
    		for (i=message.length-1; i&gt;=1; i--) {
   				xpos[i]=xpos[i-1]+step
				ypos[i]=ypos[i-1]
    		}
		xpos[0]=x+step
		ypos[0]=y
	
		for (i=0; i&lt;message.length-1; i++) {
    			var thisspan = eval(&quot;document.span&quot;+i)
    			thisspan.left=xpos[i]
			thisspan.top=ypos[i]
    		}
	}
	var timer=setTimeout(&quot;makesnake()&quot;,30)
}

&lt;/script&gt;</textarea>
        </p>
        <p><span class="p1"><font color="#6633FF">这段程序放在&lt;body&gt;与&lt;/body&gt;之间</font></span></p>
        <p> 
          <textarea name="textarea" onFocus="this.select()" onMouseOver="this.focus()" cols="50" rows="6" wrap="VIRTUAL" style="BACKGROUND-COLOR: #D5E9FD;" >&lt;script language=javascript&gt;
&lt;!-- Beginning of JavaScript -
for (i=0;i&lt;=message.length-1;i++) {
    document.write(&quot;&lt;span id='span&quot;+i+&quot;' class='spanstyle'&gt;&quot;)
	document.write(message[i])
    document.write(&quot;&lt;/span&gt;&quot;)
}
if (document.layers){
	document.captureEvents(Event.MOUSEMOVE);
}
document.onmousemove = handlerMM;
// - End of JavaScript - --&gt;
&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="textarea3" onFocus="this.select()" onMouseOver="this.focus()" cols="50" rows="4" wrap="VIRTUAL" style="BACKGROUND-COLOR: #D5E9FD;" >onLoad=&quot;makesnake()&quot; style=&quot;width:100%;overflow-x:hidden;overflow-y:scroll&quot;</textarea>
        </p>
        </form>
      <b><br>
      </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"> 
      <table width="238" border="0" cellspacing="0" cellpadding="0">
        <tr align="center"> 
          <td>&nbsp; </td>
        </tr>
      </table>
    </td>
    <td width="457" class="p2" valign="top">&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>
</table>
<table width="760" border="0" cellspacing="0" cellpadding="0" align="center">
  <tr> 
    <td class="p2" align="right" width="693"> <br>
      <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>

</body>
</html>

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