Home >Web Front-end >JS Tutorial >Jquery number scroll up and down dynamic switching plug-in_jquery
The digital scrolling plug-in created by Jq can dynamically scroll and switch when the numbers change, and the effect is very good.
Let’s look at an example first:
CSS
.textC { position:absolute; width:500px; overflow:hidden; margin-top: 100px; line-height:30px; margin-left: 300px; height:30px; } .textC span { color: #13BEEC; font-size: 28px; font-weight: bold; font-family: Georgia, "Times New Roman", Times, serif; position: absolute; }
HTML
JS
<script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script> <script type="text/javascript"> $(function(){ NumbersAnimate.Target=$(".textC"); NumbersAnimate.Numbers=12389623; NumbersAnimate.Duration=1500; NumbersAnimate.Animate(); }); var NumbersAnimate={ Target:null, Numbers:0, Duration:500, Animate:function(){ var array=NumbersAnimate.Numbers.toString().split(""); //遍历数组 for(var i=0;i<array.length;i++){ var currentN=array[i]; //数字append进容器 var t=$("<span></span>"); $(t).append("<span class=\"childNumber\">"+array[i]+"</span>"); $(t).css("margin-left",18*i+"px"); $(NumbersAnimate.Target).append(t); //生成滚动数字,根据当前数字大小来定 for(var j=0;j<=currentN;j++){ var tt; if(j==currentN){ tt=$("<span class=\"main\"><span>"+j+"</span></span>"); }else{ tt=$("<span class=\"childNumber\">"+j+"</span>"); } $(t).append(tt); $(tt).css("margin-top",(j+1)*25+"px"); } $(t).animate({marginTop:-((parseInt(currentN)+1)*25)+"px"},NumbersAnimate.Duration,function(){ $(this).find(".childNumber").remove(); }); } }, ChangeNumber:function(numbers){ var oldArray=NumbersAnimate.Numbers.toString().split(""); var newArray=numbers.toString().split(""); for(var i=0;i<oldArray.length;i++){ var o=oldArray[i]; var n=newArray[i]; if(o!=n){ var c=$($(".main")[i]); var num=parseInt($(c).html()); var top=parseInt($($(c).find("span")[0]).css("marginTop").replace('px', '')); for(var j=0;j<=n;j++){ var nn=$("<span>"+j+"</span>"); if(j==n){ nn=$("<span>"+j+"</span>"); }else{ nn=$("<span class=\"yy\">"+j+"</span>"); } $(c).append(nn); $(nn).css("margin-top",(j+1)*25+top+"px"); } var margintop=parseInt($(c).css("marginTop").replace('px', '')); $(c).animate({marginTop:-((parseInt(n)+1)*25)+margintop+"px"},NumbersAnimate.Duration,function(){ $($(this).find("span")[0]).remove(); $(".yy").remove(); }); } } NumbersAnimate.Numbers=numbers; }, RandomNum:function(m,a){ var Range = a - m; var Rand = Math.random(); return(m + Math.round(Rand * Range)); } } </script>
The plug-in is very easy to use
1. When calling for the first time
NumbersAnimate.Target=$(".textC"); NumbersAnimate.Numbers=12389623; NumbersAnimate.Duration=1500; NumbersAnimate.Animate();
2. If the number changes, you only need to call the Change function again
NumbersAnimate.ChangeNumber();
This plug-in has 3 parameters, namely:
Target: the parent container of numbers
Numbers: Displayed numbers
Duration: scrolling speed in milliseconds
Usage Note: When calling the Change method after a number is changed, you need to ensure that the changed number is consistent with the previous number of digits.