數(shù)字雨

*{margin: 0 auto;

padding: 0 auto}

body{

background-color: black;

color: limegreen;

position: absolute;

}

var stopmap={};

$(function(){

var num= cnum();

showtop(num);

setInterval(function(){

var num= cnum();

showtop(num);

},8000);

});

function showtop(num){

for(var i=0;i

xunh(num[i]);

}

}

function xunh(aa){

var dwidht= $(innerWidth);

var y=0;

var data=new Date().getTime();

var time=Math.round(Math.random()*1000);

var lable_Id=time+data;

var x=Math.floor(Math.random()*(dwidht[0]-100));

var lable=""+aa+"";

$(document.body).append(lable);

var stopInterval= setInterval(function(){ movy(lable_Id) },Math.round(Math.random()*1000));

stopmap[lable_Id]=stopInterval;

}

function movy(lableId){

var hwidht= $(innerHeight);

var top=$('#'+lableId).css("top");

if(top==undefined){

return;

}

top=top.substr(0,top.length-2);

top=Number(top)+Math.round(Math.random()*5);

// console.log(top);

if(top>(hwidht[0]-100)){

$('#'+lableId).remove();

console.log(stopmap[lableId]);

clearInterval(stopmap[lableId]);

return;

}

$('#'+lableId).css("top",top+"px");

}

//隨機的數(shù)字

function cnum(){

var num=[];

// var chars = ['0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G',

'H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];

var chars = ['?','?','?','?','?','?'];

for(var i=0;i<100;i++){

// num.push(chars[Math.floor(Math.random()*35)]);

num.push(chars[Math.floor(Math.random()*6)]);

// console.log(num[i]);

}

return num;

}

效果展示

總結(jié)

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