我有一个网页,在 CANVAS 元素中显示图像,该元素是DIV元素的子元素。我希望能够从 CANVAS 元素中获取图像并将其放入DIV中,我将在屏幕上移动。我正在使用下面的代码尝试这样做。 Javascript代码将 canvas.toDataURL()方法的值(包含在“url()”方法调用中)分配给 DIV的背景图片 使用JQuery CSS()方法。我检查了Chrome调试器控制台,并且DIV 的 backround-image 属性设置为 canvas.toDataURL()返回的值方法。我可以在 backgroundImage 字段中看到它,该字段被列为DIV的 Style 属性的子项。但是,如果我将Watch表达式设置为 $(“#easter-egg-cat-1”)。css(“backround-image”),则返回“none”作为值。
在任何情况下,我都没有在DIV中看到背景图像。为什么这样,我该如何解决?
<!-- THESE ARE THE WEB PAGE ELEMENTS INVOLVED -->
<div id="viewer-container">
<!-- This DIV is where any warning messages will be displayed if a cat's face can not be
detected properly in the uploaded photo. -->
<div class="kittydar-viewer" id="kittydar-viewer"></div>
<div id="viewer">
<canvas id="preview">
</canvas>
<canvas id="annotations">
</canvas>
</div>
<!-- This is where progress messages from the KittyDar detector are displayed as it searches for a cat face in the uploaded picture. -->
<div class="kittydar-progress" id="kittydar-progress">(none)</div>
</div>
// This is the script that grabs the image from the CANVAS element and sets the
// the desired DIVs background-image CSS property to the URL provided by the
// CANVAS element.
var previewCanvasAsUrl = $("#preview").get(0).toDataURL();
$("#easter-egg-cat-1").css("backround-image", "url(" + previewCanvasAsUrl + ")");
答案 0 :(得分:1)
你有一个错字:
$("#easter-egg-cat-1").css("background-image", "url(" + previewCanvasAsUrl + ")");
^