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js之弹出式窗口代码生成器_javascript技巧

<div style="text-align:center; height:30px;"><h3>弹出式窗口代码生成器</h3></div> 
要完成此效果把如下代码加入到<body>区域中

<table border=0 cellpadding=0 cellspacing=0 width="63%" align="center"> 
  <tbody>  
  <tr>  
    <td width="0">  
      <table border=0 cellpadding=0 cellspacing=0 width="76%"> 
        <tbody>  
        <tr>  
          <td width="464">  
            <div align="center"><b><font color=#7b9431 face=Arial 
                  size=3>  
              <script language="JavaScript"> 
<!--   
function uncode() { 
smut="<"; 
replacewords="< "; 
txt=document.mail.source2.value; 
tstx=""; 
space=replacewords.indexOf(" "); 
wrd=replacewords.substring(0,space); 
wrdl=wrd.length 
replacewords=replacewords.substring(space+1,replacewords.length); 
while (txt.indexOf(wrd)>-1){ 
space=txt.indexOf(wrd); 
txt=txt.substring(0,space)+smut+txt.substring((space+wrdl),txt.length);} 
smut=">"; 
replacewords="> "; 
space=replacewords.indexOf(" "); 
wrd=replacewords.substring(0,space); 
wrdl=wrd.length 
replacewords=replacewords.substring(space+1,replacewords.length); 
while (txt.indexOf(wrd)>-1){ 
space=txt.indexOf(wrd); 
txt=txt.substring(0,space)+smut+txt.substring((space+wrdl),txt.length);} 
document.mail.source2.value=txt; 
}

function generate(form){ 
page = document.inputForm.page.value; 
toolbars = document.inputForm.toolbars.checked; 
scrollprops = document.inputForm.scrollit.checked; 
locations = document.inputForm.locations.checked; 
statusbars = document.inputForm.statusbars.checked; 
menubars = document.inputForm.menubars.checked; 
resizeable = document.inputForm.resizeable.checked; 
width = document.inputForm.width.value; 
if (!width) width = screen.width; 
height = document.inputForm.height.value; 
if (!height) height = screen.height; 
howto = document.inputForm.howtoopen.options[document.inputForm.howtoopen.selectedIndex].value; 
center = document.inputForm.center.checked; 
start = "<"; 
if(howto == 'body') { 
otherOutput = start + "!-- 步骤二: 将Onload事件处理器粘贴在<body>标签内-->\n" + start + "BODY onLoad=\"javascript:popUp()\">"; 
} 
if(howto == 'link') { 
otherOutput = start + "!-- 步骤二: 用以下的链接打开一个新窗口 -->\n" + start + "A HREF=\"javascript:popUp()\">Open the Popup Window" + start + "/A>"; 
} 
if(howto == 'button') { 
otherOutput = start + "!-- 步骤二: 用以下的按钮代码打开一个新窗口-->\n" + start + "form>\n" + start + "input type=button value=\"Open the Popup Window\" onClick=\"javascript:popUp()\">\n" + start + "/form>"; 
} 
scriptOutput = start + '!-- 请照以下步骤进行:\r\n\r\n' 
+ '\r\n\r\n' 
+ '<HEAD>\r\n\r\n' + start + 'SCRIPT LANGUAGE="JavaScript">\r\n' 
+ 'function pop' + 'Up() {\n'; 
scriptOutput += "props=window.open('" + page + "', 'poppage', '" + 
((toolbars) ? "toolbars=1, " : "toolbars=0, ") + 
((scrollprops) ? "scrollbars=1, " : "scrollbars=0, ") + 
((locations) ? "location=1, " : "location=0, ") + 
((statusbars) ? "statusbars=1, " : "statusbars=0, ") + 
((menubars) ? "menubars=1, " : "menubars=0, ") + 
((resizeable) ? "resizable=1" : "resizable=0") + 
((width) ? ", width=" + width : "") + 
((height) ? ", height=" + height : "") + 
((center) ? ", left = " + ((screen.width - width) / 2) : "") + 
((center) ? ", top = " + ((screen.height - height) / 2) : "") + 
"');\n}\n// End -->\n" + start + "/sc" + "ript>\n"; 
output = scriptOutput + "\n\n" + otherOutput + '\n\n' + start +'!--代码结束--'+'>'; 
document.mail.source.value = output; 
document.mail.source2.value = output; 
uncode(); 
} 
--> 
</ script> 
<font size="4">
 
</font></font></b> 
<font size=3><b>弹出式窗口代码产生器</b></font> </div> 
<p> <b><font size="2"></font></b></p> 
 
             
          </td> 
        </tr> 
        </tbody>  
      </table> 
    </td> 
  </tr> 
  </tbody>  
</table>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]