常用JavaScript代码4
16.可以根据网页上的选项来确定页面颜色
<HTML>
<HEAD>
<TITLE>background.html</TITLE>
</HEAD>
<SCRIPT>
<!--
function bgChange(selObj) {
newColor = selObj.options[selObj.selectedIndex].text;
document.bgColor = newColor;
selObj.selectedIndex = -1;
}
//-->
</SCRIPT>
<BODY STYLE="font-family:Arial">
<B>Changing Background Colors</B>
<BR>
<FORM>
<SELECT SIZE="8" onChange="bgChange(this);">
<OPTION>Red
<OPTION>Orange
<OPTION>Yellow
<OPTION>Green
<OPTION>Blue
<OPTION>Indigo
<OPTION>Violet
<OPTION>White
<OPTION>pink
</SELECT>
</FORM>
</BODY>
</HTML>
17.将按钮的特征改变
<style type="text/CSS">
<!--
.style1 { font-size: 12px; background: #CCCCFF; border-width: thin thin thin thin; border-color: #CCCCFF
#CCCCCC #CCCCCC #CCCCFF}
.style2 { font-size: 12px; font-weight: bold; background: #CCFFCC; border-width: thin medium medium thin;
border-color: #CCFF99 #999999 #999999 #CCFF99}
-->
</style>
本例按钮的代码如下：
<input type="submit" name="Submit" value="提 交" onmouseover="this.className='style2'"
onmouseout="this.className='style1'" class="style1">
18.改变按钮的图片.
<style type="text/css">
<!--
.style3 { font-size: 12px; background: url(image/buttonbg1.gif); border: 0px; width: 60px; height: 22px}
.style4 { font-size: 12px; font-weight: bold; background: url(image/buttonbg2.gif); border: 0px 0; width:
60px; height: 22px}
-->
</style>
本例的按钮代码如下：
<input type="submit" name="Submit2" value="提 交" onmouseover="this.className='style4'"
onmouseout="this.className='style3'" class="style3">
19.打印页面
<div align="center"><a class=content href="javascript:doPrint();">打印本稿</a></div>
20.可以直接写html语言
document.write("");
21.改变下拉框的颜色
<select name="classid"
onChange="changelocation(document.myform.classid.options[document.myform.classid.selectedIndex].value)"
size="1" style="color:#008080;font-size: 9pt">
22.转至目标URL
window.location=""
23.传递该object的form
UpdateSN('guoqiang99267',this.form)
function UpdateSN(strValue,strForm)
{
strForm.SignInName.value = strValue;
return false;
}
24.文字标签
<label for="AltName4"><input name="AltName" type="RADIO" tabindex="931" id="AltName4"
>guoqiang99859</label>
25.layer2为组件的ID，可以控制组件是否可见
document.all.item('Layer2').style.display = "block";
document.all.item('Layer2').style.display = "none";//
26.将页面加入favorite中
<script language=javascript>
<!--
function Addme(){
url = ""; //你自己的主页地址
title = "Your Site Name"; //你自己的主页名称
window.external.AddFavorite(url,title);
-->
</script>//
27.过10秒自动关闭页面
< script language="JavaScript" >
function closeit() {
setTimeout("self.close()"，10000)
}
< /script >
28.可以比较字符的大小
char=post.charAt(i);
if(!('0'<=char&&char<='9'))
29.将字符转化为数字
month = parseInt(char)
30.点击value非空的选项时转向指定连接
<select ); font-size: 12px; background-color:
#D0DABB;border-top-width:1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px}
</style>
<input name=content type=text size="47" class="input2" maxlength="50">
33.改变水平线的特征
<hr size="0" noshade color="#C0C0C0">
34.传递参数的方式
<a href="vote.asp?CurPage=8&id=3488">8</a>
35.页内跳转
<a href="#1">1</a>
<a href="#2">2</a>
<a href="#3">3</a>
<a href="#4">4</a>
<a href="#5">5</a>
<a href="#6">6</a>
<a href="#7">7</a>
<a name="1">dfdf</a>
<a name="2">dfdf</a>//
36.两个按键一起按下
if(event.ctrlKey && window.event.keyCode==13)//
