Question

我想知道我是否制作了一个300x250的Flash HTML5 Canvas Banner，我怎样才能让它向下扩展页面并扩展画布大小？

Answer 1

试试这个：

var originalHeight = this.stage.canvas.height;
var expandedHeight = 300;  // Put here your desired height
this.stage.addEventListener("mouseover", mouseOverHandle);

function mouseOverHandle() {

    this.stage.canvas.height = expandedHeight;
    this.stage.addEventListener("mouseleave", mouseLeaveHandle);
    this.stage.removeEventListener("mouseover", mouseOverHandle);
}
function mouseLeaveHandle() {
    this.stage.canvas.height = originalHeight;
    this.stage.addEventListener("mouseover", mouseOverHandle);
    this.stage.removeEventListener("mouseleave", mouseLeaveHandle);
}

您会看到一些闪烁，因为画布会在调整大小时重绘其内容。有关详细信息，请参阅此问题Flickering during resizing of HTML5 canvas

Answer 2

点击画布，然后点击属性标签和FPS，尺寸然后根据需要改变大小

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