前端开发问题

window.open() on a multi-monitor/dual-monitor system - where does window pop up?(多显示器/双显示器系统上的 window.open() - 窗口在哪里弹出?)
jQuery override default validation error message display (Css) Popup/Tooltip like(jQuery覆盖默认验证错误消息显示(Css)Popup/Tooltip之类)
JavaScript window.open only if the window does not already exist(JavaScript window.open 仅当窗口不存在时才打开)
Background blur with CSS(使用 CSS 进行背景模糊)
Popup window to return data to parent on close(弹出窗口以在关闭时将数据返回给父级)
Base64 encoded OpenType font-face using data URI(使用数据 URI 的 Base64 编码 OpenType 字体)
UTF-16 to UTF-8 conversion in JavaScript(JavaScript 中的 UTF-16 到 UTF-8 转换)
Javascript convert GUID in string format into Base64(Javascript 将字符串格式的 GUID 转换为 Base64)
Decode URL Safe Base64 in JavaScript (browser side)(在 JavaScript 中解码 URL Safe Base64(浏览器端))
Convert an image to canvas that is already loaded(将图像转换为已加载的画布)
JS: how to encode an image.png into base64 code for data URI embedding?(JS:如何将 image.png 编码为 base64 代码以进行数据 URI 嵌入?)
Change html canvas black background to white background when creating jpg image from png image(从png图像创建jpg图像时将html画布黑色背景更改为白色背景)