js实现的GridView即表头固定表体有滚动条且可滚动_javascript技巧

// 计算数据，完全可以从数据看取得
ICollection CreateDataSource( )
{
System.Data.DataTable dt = new System.Data.DataTable();
System.Data.DataRow dr;
dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));
dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));
dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));
dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));
dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));

for (int i = 0; i < 50; i++)
{
System.Random rd = new System.Random(Environment.TickCount * i); ;
dr = dt.NewRow();
dr[0] = "班级" + i.ToString();
dr[1] = "测试" + i.ToString();
dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);
dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);
dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);
dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);
dt.Rows.Add(dr);
}
System.Data.DataView dv = new System.Data.DataView(dt);
return dv;
}

protected void Page_Load( object sender, EventArgs e )
{
if (!IsPostBack)
{
GridView1.Attributes.Add("style", "table-layout:fixed");
GridView1.DataSource = CreateDataSource();
GridView1.DataBind();
}
}

function s() {
var t = document.getElementById("<%=GridView1.ClientID%>");
var t2 = t.cloneNode(true)
for (i = t2.rows.length - 1; i > 0; i--)
t2.deleteRow(i)
t.deleteRow(0)
a.appendChild(t2)
}
window.onload = s