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Example of image cutting multi-block effect implemented by javascript_Basic knowledge

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2016-05-16 16:00:271755browse

The example in this article describes the multi-block image cutting effect implemented by javascript. 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" />
<style type="text/css">
.line{
  display:none;
  z-index:1;
  left:0;
  top:0;
  position:absolute;
}
#line1{
  display:block;
}
.container{
  position:relative;
  width:564px;
  height:294px;
  overflow:hidden;
}
.border{
  border:5px solid #000;
}
.corner{
  position:absolute;
  width:282px;
  height:147px;
  background:#ccc;
  overflow:hidden;
}
.leftTop,.inLeftTop{
  position:absolute;
  left:0;
  top:0;
  right:auto;
  bottom:auto;
}
.rightTop,.inRightTop{
  position:absolute;
  right:0;
  top:0;
  left:auto;
  bottom:auto;
}
.rightBottom,.inRightBottom{
  position:absolute;
  right:0;
  bottom:0;
  top:auto;
  left:auto;
}
.leftBottom,.inLeftBottom{
  position:absolute;
  left:0;
  bottom:0;
  top:auto;
  right:auto;
}
</style>
</head>
<body>
<script src="jquery-1.6.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
function crossLine(container,option,callback){
var lineX=$("<div style='width:2000px;height:4px;overflow:hidden;position:absolute;background:#FACC41;left:0;top:0;z-index:1'></div>");
var lineY=$("<div style='width:4px;height:2000px;overflow:hidden;position:absolute;background:#FACC41;left:0;top:0;z-index:1'></div>");
var _option={
  "display":"none",
  "targetPosX":container.width()/2-2,
  "targetPosY":container.height()/2-2,
  "time":500,
  "freq":10
};
$.extend(_option,option);
option=_option;
var targetPosX=option.targetPosX;
var targetPosY=option.targetPosY;
var time=option.time;
var freq=option.freq;
times=time/freq;
container.append(lineX).append(lineY);
//开始运动
var lxt=lineX.position().top;
var lyl=lineY.position().left;
xPerTime=targetPosX/times;
yPerTime=targetPosY/times;
var count=0;
var si=setInterval(function(){
  count++;
  if(count>=times){
    clearInterval(si);
    if(typeof(callback)=="function"){
      callback();
    }
    if(option.display=="none"){
      lineX.remove();
      lineY.remove();
    }
  }
  if(lxt+yPerTime<=targetPosY){
    lxt += yPerTime;
    lineX.css("top",lxt);
  }else{
    lxt=targetPosY;
    lineX.css("top",targetPosY);
  }
  if(lyl+xPerTime<=targetPosX){
    lyl += xPerTime;
    lineY.css("left",lyl);
  }else{
    lyl=targetPosX;
    lineY.css("left",targetPosX);
  }
},freq);
}
function picSplit(line1,line2,container,option){
//begin
line1.css("z-index",2);
/*
var targetX=282;
var targetY=147;
*/
var _option={
  "targetX":container.width()/2,
  "targetY":container.height()/2,
  "time":500,
  "freq":10
};
$.extend(_option,option);
option=_option;
var targetX=option.targetX;
var targetY=option.targetY;
var containerWidth=container.width();
var containerHeight=container.height();
/*
*复制四个，放入四个容器，置于四角，然后移动
*/
//div0-4 容器，放置于四角
var div0=$("<div></div>").css({"position":"absolute","left":0,"top":0,"right":"auto","bottom":"auto","width":targetX,"height":targetY,"z-index":"2","overflow":"hidden"}).appendTo(container);
var div1=$("<div></div>").css({"position":"absolute","left":targetX,"top":0,"right":"auto","bottom":"auto","width":containerWidth-targetX,"height":targetY,"z-index":"2","overflow":"hidden"}).appendTo(container);
var div2=$("<div></div>").css({"position":"absolute","left":targetX,"top":targetY,"right":"auto","bottom":"auto","width":targetX,"height":containerHeight-targetY,"z-index":"2","overflow":"hidden"}).appendTo(container);
var div3=$("<div></div>").css({"position":"absolute","left":0,"top":targetY,"right":"auto","bottom":"auto","width":targetX,"height":containerHeight-targetY,"z-index":"2","overflow":"hidden"}).appendTo(container);
//tempL0-4复制出来的层
var tempL0=line1.clone().css({"position":"absolute","left":0,"top":0,"right":"auto","bottom":"auto","z-index":"2"}).appendTo(div0);
var tempL1=line1.clone().css({"position":"absolute","left":-targetX,"top":0,"right":"auto","bottom":"auto","z-index":"2"}).appendTo(div1);
var tempL2=line1.clone().css({"position":"absolute","left":-targetX,"top":-targetY,"right":"auto","bottom":"auto","z-index":"2"}).appendTo(div2);
var tempL3=line1.clone().css({"position":"absolute","left":0,"top":-targetY,"right":"auto","bottom":"auto","z-index":"2"}).appendTo(div3);
line1.css("display","none");
line2.css("display","block");
//开始运动
var time=option.time;
var freq=option.freq;
var times=time/freq;
var count=0;
var xLeftPerTime=3;
var xRightPerTime=3;
var yTopPerTime=3;
var yBottomPerTime=3;
var l0=div0.position().left;
var t0=div0.position().top;
var l1=div1.position().left;
var t1=div1.position().top;
var l2=div2.position().left;
var t2=div2.position().top;
var l3=div3.position().left;
var t3=div3.position().top;
var si=setInterval(function(){
  count++;
  if(count>=times){
    clearInterval(si);
    div0.remove();
    div1.remove();
    div2.remove();
    div3.remove();
  }
  l0=l0-xLeftPerTime;
  t0=t0-yTopPerTime;
  l1=l1+xRightPerTime;
  t1=t1-yTopPerTime;
  l2=l2+xRightPerTime;
  t2=t2+yBottomPerTime;
  l3=l3-xLeftPerTime;
  t3=t3+yBottomPerTime;
  div0.css("left",(l0-xLeftPerTime)+"px");
  div0.css("top",(t0-yTopPerTime)+"px");
  div1.css("left",(l1+xRightPerTime)+"px");
  div1.css("top",(t1-yTopPerTime)+"px");
  div2.css("left",(l2+xRightPerTime)+"px");
  div2.css("top",(t2+yBottomPerTime)+"px");
  div3.css("left",(l3-xLeftPerTime)+"px");
  div3.css("top",(t3+yBottomPerTime)+"px");
},freq);
}
</script>
<div class="container" id="container">
<div class="line" id="line1"><img src="http://static.house.sina.com.cn/apileju/cms/110819/1820432103.jpg" alt="" /></div>
<div class="line" id="line2"><img src="http://static.house.sina.com.cn/apileju/cms/110819/1110183294.jpg" alt="" /></div>
</div>
<input type="button" value="GO" onclick="javascript:go()" />
<script type="text/javascript">
var line1=$("#line1");
var line2=$("#line2");
line1.css("display","block");
var container=$("#container");
function go(){
  var option={"display":"none"};
  crossLine(container,option,gopicSplit);
}
var container=$("#container");
function gopicSplit(){
  picSplit(line1,line2,container);
}
</script>
</body>
</html>

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

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