interact.js是一个随意改变形状插件,它异常壮大的，天真拖放，改变巨细，支持现代浏览器的多点触摸手势，基于SVG的运用，能运行在包罗在IE8+的浏览器。  功效包罗：

• 惯性和对齐

• 多点触控，同步互动

• 跨浏览器和装备，支持Chrome，Firefox和Opera以及Internet Explorer 9+的桌面和移动版本

• 与SVG米素的交互

• 是自力的，可定制

• 不修改DOM除了更改光标（但你可以禁用它） 

安装

npm install interactjs

例子

var pixelSize = 16;

interact('.rainbow-pixel-canvas')
  .origin('self')
  .draggable({
    modifiers: [
      interact.modifiers.snap({
        // snap to the corners of a grid
        targets: [
          interact.snappers.grid({ x: pixelSize, y: pixelSize }),
        ],
      })
    ],
  })
  // draw colored squares on move
  .on('dragmove', function (event) {
    var context = event.target.getContext('2d'),
        // calculate the angle of the drag direction
        dragAngle = 180 * Math.atan2(event.dx, event.dy) / Math.PI;

    // set color based on drag angle and speed
    context.fillStyle = 'hsl(' + dragAngle + ', 86%, '
                        + (30 + Math.min(event.speed / 1000, 1) * 50) + '%)';

    // draw squares
    context.fillRect(event.pageX - pixelSize / 2, event.pageY - pixelSize / 2,
                     pixelSize, pixelSize);
  })
  // clear the canvas on doubletap
  .on('doubletap', function (event) {
    var context = event.target.getContext('2d');

    context.clearRect(0, 0, context.canvas.width, context.canvas.height);
  });

  function resizeCanvases () {
    [].forEach.call(document.querySelectorAll('.rainbow-pixel-canvas'), function (canvas) {
      canvas.width = document.body.clientWidth;
      canvas.height = window.innerHeight * 0.7;
    });
  }

  // interact.js can also add DOM event listeners
  interact(document).on('DOMContentLoaded', resizeCanvases);
  interact(window).on('resize', resizeCanvases);