1.链接到某页

<input type="button" name="Submit" value="确 定" class="btn"

onclick="location.href='filename.html'" />

2.返回(等同后退)

<input name="Submit2" type="button" class="btn"

onclick="location.href='javascript:history.go(-1);'" value="返 回" />

3.打开新网页

<input type="button" name="Submit2" value="确 定" class="btn"

onclick="window.open('filename.html')" />

4.打开无边框的新窗口

<input type="button" name="Submit2" value="确 定" class="btn" onclick="javascript:window.open('filename.html','','width=720,height=500,resizable=yes,scrollbars=yes,status=no')" />

5.打开新网页同时指向另一页

<input type="button" name="Submit2" value="确 定" class="btn" onclick="window.open('filename.html');location.href='http://','','width=720,height=500,resizable=yes,scrollbars=yes,status=no'); window.location='filename.html';" />

7.点击按钮弹出确认alert窗口

方式一：
<input type="button" name="Submit1" value="确定" class="btn"
onClick="alert('是否确认提交？');location.href= 'filename.html';return false;" >
方式二：
<input type="button" name="Submit2" value="确定" class="btn"
onClick="if (confirm('是否确认提交？'))location.href= 'filename.html';return false;" >