本文介绍如何使用JavaScript和VML技术在HTML表格中绘制斜线，通过具体示例展示了两种方法实现的过程。
1、js获得内嵌式css
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>课程表的斜线</title>
</head>
<script Language="javascript">
function a(x,y,color)
{document.write("<img border='0' style='position: absolute; left: "+(x+20)+"; top: "+(y+20)+";background-color: "+color+"' src='px.gif' width=1 height=1>")}
</script><body leftmargin=20 topmargin=20>
<TABLE border=0 bgcolor="#000000" cellspacing="1" width=400>
<TR bgcolor="FFFFFF">
<TD id="td1"> </TD>
<TD>张三</TD>
<TD>李四</TD>
<TD>王五</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>数学</TD>
<TD>55</TD>
<TD>66</TD>
<TD>77</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>英语</TD>
<TD>99</TD>
<TD>68</TD>
<TD>71</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>语文</TD>
<TD>33</TD>
<TD>44</TD>
<TD>55</TD>
</TR>
</TABLE>
<script>
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(td1.offsetLeft,td1.offsetTop,td1.offsetLeft+td1.offsetWidth,td1.offsetTop+td1.offsetHeight,'#000000')
</script>
</BODY>
</html>
2、vml或div+css
<html xmlns:v="urn:schemas-microsoft-com:vml">
<STYLE>
v/:* { BEHAVIOR: url(#default#VML) }
</STYLE>
<body>
<TABLE border="0 " bgcolor="#000000" cellspacing="1" width="400">
<TR bgcolor="FFFFFF">
<TD id="td1"><v:line from="0,0" to="100,20"></v:line>
</TD>
<TD>张三</TD>
<TD>李四</TD>
<TD>王五</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>数学</TD>
<TD>55</TD>
<TD>66</TD>
<TD>77</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>英语</TD>
<TD>99</TD>
<TD>68</TD>
<TD>71</TD>
</TR>
<TR bgcolor="FFFFFF">
<TD>语文</TD>
<TD>33</TD>
<TD>44</TD>
<TD>55</TD>
</TR>
</TABLE>
</body>
</html>
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