Window和Window之间有什么区别? [英] What is the difference between Window and window?
问题描述
什么是窗口
?
以下是Chrome中控制台上看到的内容:
Here's what I see on the console in Chrome :
window
Window {top: Window, window: Window, location: Location, external: Object,
chrome: Object…}
Window
function Window() { [native code] }
推荐答案
窗口
是一个功能,你可以看到。它是Windows的构造函数(但是您不能直接用构造函数构建新窗口,通常使用 Window.open
功能)。 Window.prototype
因此保存您可以在窗口中调用的方法。)
Window
is a function, as you can see. It's the constructor for the windows (but you can't build new windows directly with the constructor, you usually use the Window.open
function). Window.prototype
thus holds the methods you can call on the window).
窗口
是包含 Window
的实例的全局变量,它表示包含您的文档的浏览器窗口(通常不是真正的窗口),而是一个选项卡在现代浏览器中)
window
is the global variable holding an instance of Window
, it represents the browser window containing your document (not really a "window" usually, rather a tab in modern browsers).
您可以查看
window instanceof Window
是
true
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