Home > Web Front-end > JS Tutorial > JS method to achieve text dropping effect_javascript skills

JS method to achieve text dropping effect_javascript skills

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Release: 2016-05-16 16:00:25
Original
1559 people have browsed it

The example in this article describes how to achieve the text drop effect using JS. Share it with everyone for your reference. The specific implementation method is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ru">
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="jquery-1.6.2.min.js" type="text/javascript"></script>
<style type="text/css">
.canvas{
width:500px;
height:500px;
position:relative;
}
</style>
</head>
<body>
<div>
<input type="button" onclick="javascript:falling.init();" value="GO" />
</div>
<div class="canvas" id="canvas"></div>
<script type="text/javascript">
/*
*坠落效果
*/
function Falling(){
 this.dict=["abcd","2222","sign","next","container","content","last","break","less","than","that","absolute","relative","my","index","html","java","c#","web","javascript","php","include","shit","bull","big","smart","call","apply","callee","caller","function"];
 this.canvas=$("#canvas");
 this.step=15;
 this.freq=10;
 this.height=500;
 this.width=500;
 this.si=null;
}
Falling.prototype={
 fallingAction:function(dom){
  var self=this;
  var freqs=[10,15,20];//每次下落的距离
  var disS=[];//记录所有dom的当前距离
  var disPerFreqS=[];//每个dom的
  var targetDis=500;
  var domCssTopS=[];//所有dom的top属性
  var successDom=[];//记录哪些dom已经结束运动
  var successCount=0;//有多少个dom已经结束
  var total=dom.length;
  var freqMarkLength=freqs.length;
  for(var i=0,j=dom.length;i<j;i++){
   domCssTopS[i]=dom[i].position().top;
   disS[i]=0;
   disPerFreqS[i]=freqs[parseInt(Math.random()*freqMarkLength)];
  }
  self.si=setInterval(function(){
   if(successCount>=total){
    clearInterval(self.si);
   }
   for(var i=0,j=dom.length;i<j;i++){
    if(typeof(successDom[i])!="undefined" && successDom[i]=="ok"){
     continue;
    }
    disS[i] += disPerFreqS[i];
    if(disS[i] >= targetDis){
     dom[i].css("top", targetDis+domCssTopS[i]);
     successDom[i]="ok";
     successCount++;;
    }else{
     dom[i].css("top", disS[i]+domCssTopS[i]);
    }
   }
  },self.freq);
 },
 init:function(){
  var self=this;
  self.canvas.html('');
  var dom=[];
  var l=0;
  var t=0;
  var tempDom=$("<div style='position;absolute;left:-100000;visibility:hidden'></div>").appendTo($("body"));
  for(var i=0,j=self.dict.length;i<j;i++){
   dom[i]=$("<span style='position:absolute'>"+self.dict[i]+"</span>").appendTo(tempDom);
   var domWidth=dom[i].width();
   var domHeight=dom[i].height();
   if(t<self.height){
    if(l<self.width){
     if(domWidth+l<=self.width){
      dom[i].css({"top":t,"left":l});
      self.canvas.append(dom[i]);
      l += dom[i].width();
     }else{
      if(domHeight+t<=self.height){
       t=t+domHeight;
       dom[i].css({"top":t,"left":0});
       self.canvas.append(dom[i]);
       l = dom[i].width();
      }else{
       break;//到极限了
      }
     }
    }else{
      if(domHeight+t<=self.height){
       t=t+domHeight;
       l=0;
       dom[i].css({"top":t,"left":l});
       self.canvas.append(dom[i]);
      }else{
       break;//到极限了
      }
    }
   }//else极限
  }
  /*
  for(var i=0,l=self.dict.length;i<l;i++){
   self.fallingAction(dom[i]);
  }
  */
  self.fallingAction(dom);
 }
}
var falling=new Falling();
falling.init();
</script>
</body>
</html>
Copy after login

I hope this article will be helpful to everyone’s JavaScript programming design.

Related labels:
js
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Issues
Where is js written?
From 1970-01-01 08:00:00
0
0
0
js file code not found
From 1970-01-01 08:00:00
0
0
0
js addClass not working
From 1970-01-01 08:00:00
0
0
0
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template