移动多个div样基质风格的背景，一个功能 [英] Move multiple divs like matrix style background with one function

问题描述

我提出那种风格矩阵背景，图像会在随机时间地掉了下来。
我想通过师的一个函数作为参数来启动动画。我不知道如何做到这一点。我不认为它很好的做法写相同的功能为每个滴下来的图形。
这就是我 -

I am making sort of matrix style background, images are going to drop down at random times. I would like to pass the division's to one function as an argument to start the animation. I cannot work out how to accomplish this. I don't think its good practice to write the same function for every graphic that drops down. This is what I have-

    <div id="l_0" class="drop_leds">
    </div>
    <div id="l_1" class="drop_leds">
    </div>
    <div id="l_2" class="drop_leds">
    </div>
    <div id="l_3" class="drop_leds">
    </div>

$(document).ready(function(){

     function row_01(id){
        var movePixAmount = 10;
            setInterval(function(){
               $(id).animate({ marginTop: movePixAmount+"px" }, 10);
               movePixAmount = movePixAmount +10;
                if(movePixAmount === 600){
                    movePixAmount = 0;
                    };
                },
            100);//inter

             };
        row_01("#l_0")

感谢您的帮助。

推荐答案

它是一个相当漫长的战斗，但我赢了（：如果你这样做有一个功能，就会出现冲突或他们都将有相同的速度

Its been a quite long battle but i win (: If you do this with one function, there will be conflict or they will all have same speed.

但是，相反你可以写4种不同的的setInterval 功能以不同的速度和应用这些功能多个元素，如100元。只要定义不同的离开值不得过。 这里是工作的jsfiddle。

But instead you can write 4 different setInterval functions with different speed and apply these functions multiple elements like 100 elements. Just define different leftvalues to not cross over. Here is working jsFiddle.

jQuery的：

var eleHeight = $('.drop_leds').height();
var windowH = $(window).height();
var count1 = 0;
var count2 = 0;
var counter;
var windowLimit = windowH + eleHeight;

counter = window.setInterval(function() {
    if( count1 >= 0 && count1 < windowLimit ) {
        count1 += 1;
        $('#l_0,#l_6').css({'top':count1 +'px'});
    }
    else if( count1 >= windowLimit ) { 
        count1=0; $('#l_0,#l_6').css({'top':'-'+ eleHeight +'px'});
    }
},1);

counter = window.setInterval(function() {
    if( count2 >= 0 && count2 < windowLimit ) {
        count2 += 4;
        $('#l_1,#l_4').css({'top':count2 +'px'});
    }
    else if( count2 >= windowLimit ) { 
        count2=0; $('#l_1,#l_4').css({'top':'-'+ eleHeight +'px'});
    }
},1);

CSS：

.drop_leds {position:absolute; width:10px;height:60px;background:black;top:0px; }
#l_0 { left:40px; }
#l_1 { left:70px; }
#l_2 { left:110px; }
#l_3 { left:140px; }
#l_4 { left:180px; }
#l_5 { left:210px; }
#l_6 { left:220px; }
#l_7 { left:240px; }

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