The fantasy effect of colorful squares flying realized by js

The fantasy effect of colorful squares flying realized by js_javascript skills

WBOY

Release： 2016-05-16 15:17:47

Original

1428 people have browsed it

The example in this article describes the fantasy effect of flying colorful squares realized by js. Share it with everyone for your reference, the details are as follows:

The screenshot of the running effect is as follows:

The specific code is as follows:

<!DOCTYPE html>
<html>
 <head>
  <title>demo</title>
  <style type="text/css">
   body {
    margin:0; padding:0;
   }
   ul {
    list-style:none; margin:0; padding:0;
   }
   li {
    position:absolute;
   }
   #power {
    font-size:50px; line-height:100px; border:2px solid green; color:green;
    position:absolute; right:20px; bottom:20px; 
   }
  </style>
 </head>
 <body>
  <ul id="canvas"></ul>
 </body>
 <script type="text/javascript">
  var $ = function(id) {
   return document.getElementById(id);
  }
  var $_name = function(tag) {
   return document.getElementsByTagName(tag);
  }
  var color = function() {
   var _color = "rgb(";
   _color += Math.round(Math.random()*255);
   _color += ",";
   _color += Math.round(Math.random()*255);
   _color += ",";
   _color += Math.round(Math.random()*255);
   _color += ")";
   return _color;
  }
  var createLi = function(attr) {
   var ele = document.createElement("li");
   ele.style.backgroundColor = attr.bgColor || "black";
   ele.style.left = attr.left + "px";
   ele.style.top = attr.top + "px";
   ele.style.width = ele.style.height = "15px";
   ele.onmouseover = function() {
    var _self = this;
    var _rotate = 0;
    if(_self.interval) {
     clearInterval(_self.interval);
     _self.style.backgroundColor = _self._backgroundColorBK;
    }
    _self._backgroundColorBK = _self.style.backgroundColor;
    _self.style.backgroundColor = color();
    _self.interval = setInterval(function() {
     _self.style.webkitTransform = "rotate("+_rotate+"deg)";
     _rotate += 30;
     if(_rotate > 360) {
      clearInterval(_self.interval);
      _self.onmouseover = null;
      _self.style.backgroundColor = _self._backgroundColorBK;
      move(_self);
      return;
     }
    }, 100);
   }
   return ele;
  }
  var loca = {
   x: 1000, 
   y: 0
  };
  var move = function(obj) {
   var _self = obj;
   var curX = parseInt(_self.style.left);
   var curY = parseInt(_self.style.top);
   var sX = loca.x - curX;
   var sY = loca.y - curY;
   var addX = sX/36;
   var addY = sY/36;
   var rotate = 0;
   var backgroundColorBK = _self.style.backgroundColor;
   _self.interval = setInterval(function() {
    _self.style.width = _self.style.height = (parseInt(_self.style.height) + 5) + "px";
    _self.style.webkitTransform = "rotate("+rotate+"deg)";
    curX += addX; 
    curY += addY;
    _self.style.left = curX + "px";
    _self.style.top = curY + "px";
    _self.style.backgroundColor = color();
    rotate += 10;
    if(rotate > 360) {
     _self.style.left = loca.x + "px";
     _self.style.top = loca.y + "px";
     clearInterval(_self.interval);
     _self.style.backgroundColor = backgroundColorBK;
     return;
    }
   }, 30);
  }
  var init = function() {
   var ul = $("canvas");
   for(var i=50; i<90; i++) {
    for(var j=50; j<90; j++) {
     var color = "rgb("+i+","+j+","+Math.round(Math.random()*255)+")";
     ul.appendChild(createLi({bgColor: color, left:(j-50)*16 ,top:(i-50)*16}));
    }
   }
  }
  var main = function() {
   init();
  }
  main();
 </script>
</html>

Copy after login

Readers who are interested in more content related to js special effects can check out the special topics of this site: "Summary of jQuery animation and special effects usage", "Summary of common classic special effects of jQuery" and " Summary of JavaScript animation special effects and techniques》

I hope this article will be helpful to everyone in JavaScript programming.