哪位好心人能告诉我页面上的钟表功能是怎么实现的？

我目前的想法是：获取当前的时间放到页面上，可是需要刷新才能使时间更新。
请问各位有什么办法不用刷新时间的秒数会自动增加的？

解决方案 »

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那两个不会啊！暂时只会java基础。用纯java代码能写出来吗？谢谢二位
不用刷新页面用线程的sleep()来达到刷新效果比如在循环里每sleep(1000)重新获取当前时间
<script>
function tick() {
var hours, minutes, seconds, xfile;
var intHours, intMinutes, intSeconds;
var today;
today = new Date();
intHours = today.getHours();
intMinutes = today.getMinutes();
intSeconds = today.getSeconds();
if (intHours == 0) {
hours = "12:";
xfile = "午夜";
} else if (intHours < 12) {
hours = intHours+":";
xfile = "上午";
} else if (intHours == 12) {
hours = "12:";
xfile = "正午";
} else {
intHours = intHours - 12
hours = intHours + ":";
xfile = "下午";
}
if (intMinutes < 10) {
minutes = "0"+intMinutes+":";
} else {
minutes = intMinutes+":";
}
if (intSeconds < 10) {
seconds = "0"+intSeconds+" ";
} else {
seconds = intSeconds+" ";
}
timeString = xfile+hours+minutes+seconds;
document.getElementById("t").innerHTML=timeString
window.setTimeout("tick();", 1000);
}
window.onload=tick
</script>
<div id="t"></div>
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.6000.16414" name=GENERATOR></HEAD>
<BODY>
<DIV
style="LEFT: 155px; WIDTH: 400px; ZOOM: 1; POSITION: absolute; TOP: 133px; HEIGHT: 300px">
<DIV id=bg
style="LEFT: -22px; WIDTH: 150px; ZOOM: 1.5; POSITION: absolute; TOP: -57px; HEIGHT: 150px"><IMG
style="Z-INDEX: 22; WIDTH: 129px; HEIGHT: 129px" src="/upload/novelty.gif">
</DIV>
<DIV id=h
style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; WIDTH: 129px; PADDING-TOP: 5px; POSITION: absolute; HEIGHT: 129px"><IMG
style="Z-INDEX: 22; WIDTH: 129px; HEIGHT: 129px" src="/upload/novelty_h.gif">
</DIV>
<DIV id=m
style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; WIDTH: 129px; PADDING-TOP: 5px; POSITION: absolute; HEIGHT: 129px"><IMG
style="Z-INDEX: 22; WIDTH: 129px; HEIGHT: 129px" src="/upload/novelty_m.gif">
</DIV>
<DIV id=s
style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; WIDTH: 129px; PADDING-TOP: 5px; POSITION: absolute; HEIGHT: 129px"><IMG
style="Z-INDEX: 22; WIDTH: 129px; HEIGHT: 129px" src="/upload/novelty_s.gif">
</DIV>
<DIV id=dot
style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; WIDTH: 129px; PADDING-TOP: 5px; POSITION: absolute; HEIGHT: 129px"><IMG
style="Z-INDEX: 22; WIDTH: 129px; HEIGHT: 129px" src="/upload/novelty_dot.gif">
</DIV>
<DIV>
<SCRIPT>
//oObj input requires that a matrix filter be applied.
//deg input defines the requested angle of rotation.
var deg2radians = Math.PI * 2 / 360;
function MatrixFilter(obj)
{
    if(!obj.filters)return;
    //alert(obj.filters.item(0));
    var Matrix;
    for(p in obj.filters)
    {
        if(p=="DXImageTransform.Microsoft.Matrix")Matrix=obj.filters["DXImageTransform.Microsoft.Matrix"];
    }
    if(!Matrix)
    {
        obj.style.filter+="progid:DXImageTransform.Microsoft.Matrix()";
    }
    Matrix=obj.filters["DXImageTransform.Microsoft.Matrix"];
    this.equal=function(Matrix2D_x)
    {
        if(Matrix2D_x.M11)Matrix.M11 = Matrix2D_x.M11;
        if(Matrix2D_x.M12)Matrix.M12 = Matrix2D_x.M12;
        if(Matrix2D_x.M21)Matrix.M21 = Matrix2D_x.M21;
        if(Matrix2D_x.M22)Matrix.M22 = Matrix2D_x.M22;
    }

    if(arguments[1])this.equal(arguments[1]);

    this.Rotate=function(deg)
    {
        rad = deg * deg2radians;
        costheta = Math.cos(rad);
        sintheta = Math.sin(rad);
        var d=new Matrix2D(costheta,-sintheta,sintheta,costheta);
        this.equal(Matrix2D.Mul(Matrix,d));
    }
    this.RotateTo=function(deg)
    {
        rad = deg * deg2radians;
        costheta = Math.cos(rad);
        sintheta = Math.sin(rad);
        var d=new Matrix2D(costheta,-sintheta,sintheta,costheta);
        this.equal(d);
    }
    this.RotateAt=function(deg,sx,sy)
    {
        rad = deg * deg2radians;
        costheta = Math.cos(rad);
        sintheta = Math.sin(rad);
        var d=new Matrix2D(costheta,-sintheta,sintheta,costheta);
        var x=sx-Matrix.Dx;
        var y=sy-Matrix.Dy;
        this.MoveTo(x*costheta+y*sintheta-x,-x*sintheta+y*costheta-y);
        this.equal(Matrix2D.Mul(Matrix,d));
    }
    this.RotateToAt=function(deg,sx,sy)
    {
        rad = deg * deg2radians;
        costheta = Math.cos(rad);
        sintheta = Math.sin(rad);
        var d=new Matrix2D(costheta,-sintheta,sintheta,costheta);
        var x=sx;
        var y=sy;
        this.MoveTo(x-(x*costheta-y*sintheta),-(x*sintheta+y*costheta-x));
        this.equal(d);
    }     this.MoveTo=function(sx,sy)
    {
        Matrix.Dx=sx;
        Matrix.Dy=sy;
    }
    this.toMatrix2D=function()
    {
        return new Matrix2D(Matrix.M11,Matrix.M12,Matrix.M21,Matrix.M22);
    }
    this.ZoomBy=function(sx,sy)
    {
        var d=new Matrix2D(sx,0,0,sy);
        this.equal(Matrix2D.Mul(Matrix,d));
    }
    this.toString=function()
    {
        return ""+Matrix.M11+" "+Matrix.M12+"\n"+Matrix.M21+" "+Matrix.M22+"\n"
    }
    //Matrix.SizingMethod='clip to original';
    //this.fnSetRotation(30);
    //alert(Matrix.M11);
    //alert(obj.filters["DXImageTransform.Microsoft.Matrix"]);
}
function Matrix2D()
{
    this.M11 = arguments[0]||1;
    this.M12 = arguments[1]||0;
    this.M21 = arguments[2]||0;
    this.M22 = arguments[3]||1;
    this.Mul_Matrix2D=function(Matrix2D_b)
    {
        var r=new Matrix2D();
        r=Matrix2D.Mul(this,Matrix2D_b);
        return r;
    }
    this.toString=function()
    {
        return ""+this.M11+" "+this.M12+"\n"+this.M21+" "+this.M22+"\n"
    }
}
Matrix2D.Mul=function(Matrix2D_a,Matrix2D_b)
{
    var r=new Matrix2D();
    r.M11=Matrix2D_a.M11*Matrix2D_b.M11+Matrix2D_a.M12*Matrix2D_b.M21;
    r.M12=Matrix2D_a.M11*Matrix2D_b.M12+Matrix2D_a.M12*Matrix2D_b.M22;
    r.M21=Matrix2D_a.M21*Matrix2D_b.M11+Matrix2D_a.M22*Matrix2D_b.M21;
    r.M22=Matrix2D_a.M21*Matrix2D_b.M12+Matrix2D_a.M22*Matrix2D_b.M22;
    return r;
}
var ms=new MatrixFilter(s);
var mm=new MatrixFilter(m);
var mh=new MatrixFilter(h);
var i=1;
setInterval("ms.RotateToAt((new Date()).getSeconds()*6+6,69,69)",500);
setInterval("mm.RotateToAt((new Date()).getMinutes()*6+6,69,69)",500);
setInterval("mh.RotateToAt(((new Date()).getHours()+(new Date()).getMinutes()/60)*30,69,69)",500);
//mf.MoveTo(30,70);
//mf.ZoomBy(1.5,1.5);
//mf.ZoomBy(1.5,1.5);
//alert(mf.toMatrix2D()); //alert(Matrix2D.Mul(m2d1,m2d2));
//fnSetRotation(oDiv.filters.item(0),30);
</SCRIPT>
</DIV></DIV></BODY></HTML>
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