Html 自动设置画布高度

我有帆布

<canvas id="canvas" width="1700" height="679" style="background-color:#ffffff;width:100%;overflow:hidden;margin-top: -7px;"></canvas>

function resizeIE()
{
  canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
    $("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

    if(window.innerWidth<960) //for other device (only for me)
    {
      var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
      //to make the ratio of canvas find the pencentage
      //ex. canvas height: 1700px canvas width: 679px;
      //(679*100)/1700 = 39.941 <-- use this one
      //best solution
    }
    else
    {
      var height_ie = window.innerHeight-160; //just for the logo for my web
    }
    canvas.style.height = height_ie+"px";
 }
}

function resizeIE()
{
canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
$("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

if(window.innerWidth<960) //for other device (only for me)
{
  var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
  //to make the ratio of canvas find the pencentage
  //ex. canvas height: 1700px canvas width: 679px;
  //(679*100)/1700 = 39.941 <-- use this one
  //best solution
}
else
{
  var height_ie = window.innerHeight-160; //just for the logo for my web
}
canvas.style.height = height_ie+"px";
 }
}

并使用Jquery重新调整画布的大小

<canvas id="canvas" width="1700" height="679" style="background-color:#ffffff;width:100%;overflow:hidden;margin-top: -7px;"></canvas>

function resizeIE()
{
  canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
    $("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

    if(window.innerWidth<960) //for other device (only for me)
    {
      var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
      //to make the ratio of canvas find the pencentage
      //ex. canvas height: 1700px canvas width: 679px;
      //(679*100)/1700 = 39.941 <-- use this one
      //best solution
    }
    else
    {
      var height_ie = window.innerHeight-160; //just for the logo for my web
    }
    canvas.style.height = height_ie+"px";
 }
}

function resizeIE()
{
canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
$("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

if(window.innerWidth<960) //for other device (only for me)
{
  var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
  //to make the ratio of canvas find the pencentage
  //ex. canvas height: 1700px canvas width: 679px;
  //(679*100)/1700 = 39.941 <-- use this one
  //best solution
}
else
{
  var height_ie = window.innerHeight-160; //just for the logo for my web
}
canvas.style.height = height_ie+"px";
 }
}

---

如果使用CSS调整画布的大小，实际上就是在重塑画布的视口

可以将此视为缩放图像。就像调整.jpg图像的大小一样，可以得到像素化和失真

而是调整画布元素的大小

可以将此视为向画布的宽度和高度添加更多空像素，而不是“拉伸”现有像素

下面介绍如何向画布元素添加像素，使其100%占据浏览器窗口：

var canvas=getElementById("myCanvas");
canvas.width= window.innerWidth;
canvas.height=window.innerHeight;

如果要调整浏览器窗口的大小，可以将此代码放入windows调整大小处理程序中，使其自动发生

注意：无论何时以这种方式调整画布大小，都必须重新绘制画布内容

并使用Jquery重新调整画布的大小

<canvas id="canvas" width="1700" height="679" style="background-color:#ffffff;width:100%;overflow:hidden;margin-top: -7px;"></canvas>

function resizeIE()
{
  canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
    $("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

    if(window.innerWidth<960) //for other device (only for me)
    {
      var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
      //to make the ratio of canvas find the pencentage
      //ex. canvas height: 1700px canvas width: 679px;
      //(679*100)/1700 = 39.941 <-- use this one
      //best solution
    }
    else
    {
      var height_ie = window.innerHeight-160; //just for the logo for my web
    }
    canvas.style.height = height_ie+"px";
 }
}

function resizeIE()
{
canvas = document.getElementById("canvas");
  if($.browser.msie) //only IE
  {
$("#canvas").attr('style','background-color:#ffffff; width:100%;height:679px;overflow:hidden;margin-top: -7px;');
//set the height style first

if(window.innerWidth<960) //for other device (only for me)
{
  var height_ie = (window.innerWidth*39.941176470588235294117647058824)/100;
  //to make the ratio of canvas find the pencentage
  //ex. canvas height: 1700px canvas width: 679px;
  //(679*100)/1700 = 39.941 <-- use this one
  //best solution
}
else
{
  var height_ie = window.innerHeight-160; //just for the logo for my web
}
canvas.style.height = height_ie+"px";
 }
}

---

您不能使用css应用高度？@sajay我将css内联到画布中，使高度：100%和高度：自动。调整大小时，结果会更小，并且保持不变感谢您推荐使用css:）@user1128331 css不能很好地处理画布，因为它会拉伸画布。也请参见markE的答案。@user1128331删除了您的编辑。不要把话题放得太近。人们利用自己的时间来帮助你，所以请考虑下面提供的解决方案。如果你自己找到了一个解决方案，你可以将其作为答案发布。请看我使用CreateJS导出进行swf和转换，因此我不知道如何重新绘制内容。感谢您在canvas.width和canvas.heightThank上帮助我，我认为这应该被标记为答案-结合window.onresize事件，markE的上述解决方案实际上是大多数人想要的全屏画布。像OP自己的答案那样设置canvas.style.height是没有意义的，因为最终会出现模糊和扭曲的画布。