5种做法实现table表格中的斜线表头效果

<tr>
<td id="td1"></td>
<td>成绩</td>
</tr>
<tr>
<td>姓名</td>
<td id="td2"></td>
</tr>
</table></TD>
<TD width="81">数学</TD>
<TD width="96">英语</TD>
<TD width="99">C语言</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>张三</TD>
<TD>55</TD>
<TD>66</TD>
<TD>77</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>李四</TD>
<TD>99</TD>
<TD>68</TD>
<TD>71</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>王五</TD>
<TD>33</TD>
<TD>44</TD>
<TD>55</TD>
</TR>
</TABLE>
<script type="text/javascript">
function a(x, y, color) {
document
.write("<img border='0' style='position: absolute; left: "
+ (x)
+ "; top: "
+ (y)
+ ";background-color: "
+ color
+ "' src='px.gif' width=1 height=1>")
}
function getTop(tdobj) {
vParent = tdobj.offsetParent;
t = tdobj.offsetTop;
while (vParent.tagName.toUpperCase() != "BODY") {
t += vParent.offsetTop;
vParentvParent = vParent.offsetParent;
}
return t;
}

function getLeft(tdobj) {
vParent = tdobj.offsetParent;
t = tdobj.offsetLeft;
while (vParent.tagName.toUpperCase() != "BODY") {
t += vParent.offsetLeft;
vParentvParent = vParent.offsetParent;
}
return t;
}
function line(x1, y1, x2, y2, color) {
var tmp
if (x1 >= x2) {
tmp = x1;
x1 = x2;
x2 = tmp;
tmp = y1;
y1 = y2;
y2 = tmp;
}
for ( var i = x1; i <= x2; i++) {
x = i;
y = (y2 - y1) / (x2 - x1) * (x - x1) + y1;
a(x, y, color);
}
}
//line(1,1,100,100,"000000");
line(getLeft(td1), getTop(td1), getLeft(td1) + td1.offsetWidth,
getTop(td1) + td1.offsetHeight, '#000000');
line(getLeft(td2), getTop(td2), getLeft(td2) + td2.offsetWidth,
getTop(td2) + td2.offsetHeight, '#000000');
</script>
</BODY>
</HTML>

好了，五种方法都说完了，希望对大家的学习有所帮助，也希望大家多多支持软件开发网。