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   源码介绍

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用Javascript  实现页面票雪花特效

 

var SNOW_browser_IE_NS =0;
var SNOW_browser_MOZ = (self.innerWidth) ? 1 : 0;
var SNOW_browser_IE7 = (document.documentElement.clientHeight) ? 1 : 0;

var SNOW_Time;
var SNOW_dx, SNOW_xp, SNOW_yp;
var SNOW_am, SNOW_stx, SNOW_sty; 
var i, SNOW_Browser_Width, SNOW_Browser_Height;

if (SNOW_browser_IE_NS)
{
SNOW_Browser_Width = document.body.clientWidth;
SNOW_Browser_Height = document.body.clientHeight;
}
else if (SNOW_browser_MOZ)
{
SNOW_Browser_Width = self.innerWidth - 20;
SNOW_Browser_Height = self.innerHeight;
}
else if (SNOW_browser_IE7)
{
SNOW_Browser_Width = document.documentElement.clientWidth;
SNOW_Browser_Height = document.documentElement.clientHeight;
}

SNOW_dx = new Array();
SNOW_xp = new Array();
SNOW_yp = new Array();
SNOW_am = new Array();
SNOW_stx = new Array();
SNOW_sty = new Array();

for (i = 0; i < SNOW_no; i) 
{ 
SNOW_dx[i] = 0; 
SNOW_xp[i] = Math.random()*(SNOW_Browser_Width-50);
SNOW_yp[i] = Math.random()*SNOW_Browser_Height;
SNOW_am[i] = Math.random()*20; 
SNOW_stx[i] = 0.02 Math.random()/10;
SNOW_sty[i] = 0.7 Math.random();
var SHOW_Image = "";
if(i % 2 == 0){
SHOW_Image = SNOW_Picture;
}
else{
SHOW_Image = SNOW_Picture2;
}

SNOW_yp[i] = 0;
SNOW_stx[i] = 0.02 Math.random()/10;
SNOW_sty[i] = 0.7 Math.random();
}

SNOW_dx[i] = SNOW_stx[i];

document.getElementById("SNOW_flake" i).style.top=SNOW_yp[i] "px";
document.getElementById("SNOW_flake" i).style.left=SNOW_xp[i] SNOW_am[i]*Math.sin(SNOW_dx[i]) "px";
}

SNOW_Time = setTimeout("SNOW_Weather()", 10);

}

SNOW_Weather();