main.js

本实例为一个完整的网上购物商城的完整例子程序,里面有所以的源代码.希望对大家学习有用.

function MM_swapImgRestore()
{ 
        //v3.0
        var i, x, a=document.MM_sr; for(i=0; a && i<a.length && (x=a[i]) && x.oSrc; i++)x.src=x.oSrc;
}
function MM_preloadImages()
{
        //v3.0
        var d=document; if(d.images)
        {
                if(!d.MM_p)d.MM_p=new Array();
                        var i, j=d.MM_p.length, a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
                if(a[i].indexOf("#") != 0)
                {
                        d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];
                }
        }
}
function MM_findObj(n, d)
{
        //v4.01
        var p, i, x; if(!d)d=document; if((p=n.indexOf("?"))>0 && parent.frames.length)
        {
                d=parent.frames[n.substring(p+1)].document; n=n.substring(0, p);
        }
        if(!(x=d[n]) && d.all)x=d.all[n]; for(i=0; !x && i<d.forms.length; i++)x=d.forms[i][n];
        for(i=0; !x && d.layers && i<d.layers.length; i++)x=MM_findObj(n, d.layers[i].document);
        if(!x && d.getElementById)x=d.getElementById(n); return x;
}
function MM_swapImage()
{
        //v3.0
        var i, j=0, x, a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0; i<(a.length-2); i+=3)
        if((x=MM_findObj(a[i])) != null)
        {
                document.MM_sr[j++]=x; if(!x.oSrc)x.oSrc=x.src; x.src=a[i+2];
        }
}
//双击滚动，单击停止
var shida_top, timer;
function shida_stop()
{
        timer=setInterval("shida_scrollwindow()", 1);
}
function shida_start()
{
        clearInterval(timer);
}
function shida_scrollwindow()
{
        shida_top=document.body.scrollTop; window.scroll(0, ++shida_top);
        if(shida_top != document.body.scrollTop)shida_start();
}
document.onmousedown=shida_start;
document.ondblclick=shida_stop;