2回答

• 

  慕粉4323859

  2018-12-25 18:17:47

  这串代码没有问题

  0 0
• 

  慕田峪6820120

  2018-01-10 15:33:20

  aneObj.prototype.draw=function(){

  ctx2.save();

  ctx2.globalAlpha=.6;

  for(var i = 0;i<this.num;i++){

  //beginPath,moveTo,lineTo,stroke,strokeStyle,lineWidth,lineCap,globalAlpha

  ctx2.beginPath();

  ctx2.moveTo(this.x[i],canHeight);

  ctx2.lineTo(this.x[i],canHeight-this.len[i]);

  ctx2.lineWidth=20;

  ctx2.lineCap='round'

  ctx2.strokeStyle="#3b154e";

  ctx2.stroke();

  
  

  }

  ctx2.restore();

  }

  
  

  0 0