js圖片碎片化效果程式碼例項

antzone發表於2017-04-13
JS

分享一段程式碼例項，它實現了點選圖片即可將圖片碎片化的功能。

程式碼例項如下:

[HTML] 純文字檢視 複製程式碼
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="author" content="http://www.softwhy.com/" />
<title>螞蟻部落</title>
</head>
<body>
<div style="margin-left: 100px">
  <img src="demo/js/img/cat.jpg">
</div>
<script>
(function() {
  var img = document.querySelector('img');
  img.style.cursor = 'pointer';
  img.onclick = function() {
    img.style.position = 'relative';
    setTimeout(function() {
      rock(-2, img)
    }, 100);
    setTimeout(function() {
      rock(0, img)
    }, 200);
    setTimeout(function() {
      rock(2, img)
    }, 300);
    setTimeout(function() {
      rock(0, img)
    }, 400);
    setTimeout(function() {
      explode(16, 8, img)
    }, 500);
 
    function rock(param, img) {
      img.style.top = param + 'px';
      img.style.left = param + 'px';
    }
 
    function explode(row, col, img) {
      var divs = document.createElement('div');
      var styleDivs = {};
      styleDivs.width = img.width + 'px';
      styleDivs.height = img.height + 'px';
      styleDivs.position = 'relative';
      for (var i in styleDivs)
        divs.style[i] = styleDivs[i];
 
      for (var i = 0; i < col; i++) {
        for (var j = 0; j < row; j++) {
          var div = document.createElement('div');
          var styleDiv = {};
          styleDiv.position = 'absolute';
          styleDiv.left = img.width / row * j + 'px';
          styleDiv.top = img.height / col * i + 'px';
          styleDiv.width = img.width / row + 'px';
          styleDiv.height = img.height / col + 'px';
          styleDiv.backgroundImage = 'url(' + img.src + ')';
          styleDiv.backgroundRepeat = 'no-repeat';
          styleDiv.backgroundPosition = -img.width / row * j + 'px ' + -img.height / col * i + 'px';
          styleDiv.borderRadius = '50%';
          var scale = 1 + Math.round(10 * Math.random()) * 0.1;
          styleDiv.transform = 'scale(' + scale + ')';
          styleDiv.boxShadow = '2px 2px 2px';
          for (var s in styleDiv)
            div.style[strike] = styleDiv[strike];
          divs.appendChild(div);
        }
      }
      img.parentNode.replaceChild(divs, img);
      img.style.display = 'none';
      var traces = [];
      for (var i = 0; i < row * col; i++) {
        var obj = {
          a: null,
          b: null,
          c: null
        };
        obj.a = 0.001 * Math.round(10 * Math.random());
        obj.b = 0.1;
        obj.c = Math.random() > 0.5 ? -Math.round(10 * Math.random()) : Math.round(10 * Math.random());
        traces.push(obj);
      }
      var index = 0;
      var interval = setInterval(function() {
        var childs = divs.childNodes;
        for (var i = 0; i < childs.length; i++) {
          var child = childs[i];
          var trace = traces[i];
          if (child.offsetLeft > divs.offsetWidth / 2)
            child.style.left = child.offsetLeft + index * 2 + trace.c + 'px';
          else
            child.style.left = child.offsetLeft - index * 2 + trace.c + 'px';
          if (i < row * col / 2)
            child.style.top = child.offsetTop - trace.a * Math.pow(index, 2) - trace.b * index + trace.c + 'px';
          else
            child.style.top = child.offsetTop + trace.a * Math.pow(index, 2) + trace.b * index + trace.c + 'px';
          child.style.opacity = 1 - index * 0.1;
        }
        index++;
        if (index == 11) {
          clearInterval(interval);
          divs.innerHTML = '';
        }
      }, 100);
    }
  }
})();        
</script>
</body>
</html>

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