📄 back17.htm

📁 javascript各种效果的实例及源代码
💻 HTM
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<html>
<head>
<title>按钮驱动背景</title>
<style type="text/css">
<!--
body {  font-family: "宋体"; font-size: 9pt; margin-top: 0px; margin-left: 0px; margin-right: 0px}
A { COLOR: black; FONT-SIZE: 9pt; FONT-WEIGHT: 400; TEXT-DECORATION: none }
 A:hover { COLOR: red; FONT-SIZE: 9pt; FONT-WEIGHT: 400; TEXT-DECORATION: underline }
a:active     { font: 9pt "宋体"; cursor: hand; color: #FF0033 }

-->
</style>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="Javascript"> 
 <!-- 
 function backcolor(form){
 
         temp = ""
 
         for (var i = 0; i < 16; i++) {
 
                 temp = form.color[i].value
 
                 if (form.color[i].checked){ document.bgColor = temp } 
                 }
          }
  
 function randombackground(){ 
 
         document.bgColor = getColor() 
         } 
 function getColor(){
         currentdate = new Date()
         backgroundcolor = currentdate.getSeconds() 
         if (backgroundcolor > 44)
                 backgroundcolor = backgroundcolor - 45
         else if (backgroundcolor > 29)
                 backgroundcolor = backgroundcolor - 30
         else if (backgroundcolor > 15)
                 backgroundcolor = backgroundcolor - 16
         if (backgroundcolor == 0 )
                 return "olive";
         else if (backgroundcolor == 1 )
                 return "teal";
         else if (backgroundcolor == 2 )
                 return "red";
         else if (backgroundcolor == 3 )
                 return "blue";
         else if (backgroundcolor == 4 )
                 return "maroon";
         else if (backgroundcolor == 5 )
                 return "navy";
         else if (backgroundcolor == 6 )
                 return "lime";
         else if (backgroundcolor == 7 )
                 return "fuschia";
         else if (backgroundcolor == 8 )
                 return "green";
         else if (backgroundcolor == 9 )
                 return "purple";
         else if (backgroundcolor == 10 )
                 return "gray";
         else if (backgroundcolor == 11 )
                 return "yellow";
         else if (backgroundcolor == 12 ) 
                 return "aqua"; 
         else if (backgroundcolor == 13 ) 
                 return "black"; 
         else if (backgroundcolor == 14 ) 
                 return "white"; 
         else if (backgroundcolor == 15 ) 
                 return "silver"; 
         }
 
 // --> 
 </script>
</head>
<body bgcolor="#fef4d9"> 
<br>
<br>
<center><font color=red face="隶书" size=6>按钮驱动背景</font></center>
<br>
<br><center>
<table border=5 bordercolor=blue borderlight=green>
<tr><td align=center><font size=5 color=red face="Arial, Helvetica, sans-serif"><strong>请点击按钮!</strong></font></td></tr><tr><td align=center> <FORM>
 <input type="button" value="色彩变化" onClick="randombackground()">
 </form></td></tr>
</table></center>
<br>
<br>
<center>
<textarea name=source rows=12 cols=45 class=yk9>
脚本说明:
第一步:把如下代码加入<head>区域中
<script language="Javascript"> 
 <!-- 
 function backcolor(form){
 
         temp = ""
 
         for (var i = 0; i < 16; i++) {
 
                 temp = form.color[i].value
 
                 if (form.color[i].checked){ document.bgColor = temp } 
                 }
          }
  
 function randombackground(){ 
 
         document.bgColor = getColor() 
         } 
 function getColor(){
         currentdate = new Date()
         backgroundcolor = currentdate.getSeconds() 
         if (backgroundcolor > 44)
                 backgroundcolor = backgroundcolor - 45
         else if (backgroundcolor > 29)
                 backgroundcolor = backgroundcolor - 30
         else if (backgroundcolor > 15)
                 backgroundcolor = backgroundcolor - 16
         if (backgroundcolor == 0 )
                 return "olive";
         else if (backgroundcolor == 1 )
                 return "teal";
         else if (backgroundcolor == 2 )
                 return "red";
         else if (backgroundcolor == 3 )
                 return "blue";
         else if (backgroundcolor == 4 )
                 return "maroon";
         else if (backgroundcolor == 5 )
                 return "navy";
         else if (backgroundcolor == 6 )
                 return "lime";
         else if (backgroundcolor == 7 )
                 return "fuschia";
         else if (backgroundcolor == 8 )
                 return "green";
         else if (backgroundcolor == 9 )
                 return "purple";
         else if (backgroundcolor == 10 )
                 return "gray";
         else if (backgroundcolor == 11 )
                 return "yellow";
         else if (backgroundcolor == 12 ) 
                 return "aqua"; 
         else if (backgroundcolor == 13 ) 
                 return "black"; 
         else if (backgroundcolor == 14 ) 
                 return "white"; 
         else if (backgroundcolor == 15 ) 
                 return "silver"; 
         }
 
 // --> 
 </script>


第二步:把如下代码加入<body>区域中
 <FORM>
 <input type="button" value="Random" onClick="randombackground()">
 </form>
</textarea>
<SCRIPT LANGUAGE="JavaScript">

<!-- hide

function goHist(a) 

{

   history.go(a);

}

//-->

</script>

<FORM METHOD="post">
<INPUT TYPE="button" VALUE="返回" onClick="goHist(-1)" style="background-color: #8000FF; color: rgb(255,255,255)">
</form>
</center>
<br>
<br>
</body>
</html>
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