Question

如何从本地图像文件为当前页面设置自定义光标？基本上我需要使用javascript以编程方式更改为不同的光标，但光标本地存储在我的硬盘上。

Answer 1

你不能（但见下文），因为无法从其他协议访问或引用file://。

通过JavaScript包含游标的基本方法是：

element.style.cursor = "url(...location-of-pic...), auto";
//                                                ^^^^^^ (required as fallback)

您可以convert your image to a base64-dataURI使用它代替file://..../cursor.png：

document.documentElement.style.cursor = 'url("data:image/x-icon;base64,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%3D%3D"), auto';

您可以在this page上传任意文件并将其转换为base-64格式。修剪空格，并加上data:image/png;base64,前缀。

除了使用数据URI，还可以将图像上传到文件主机，并按如下方式嵌入：

document.documentElement.style.cursor = 'url("http://sstatic.net/stackoverflow/img/favicon.ico"), auto';

另见：

MDN：CSS cursor property
MDN：Using URL values for the cursor property

Javascript-firefox：如何从本地png文件设置自定义光标？

1 个答案: