这个方法如何调用？

I am using PDFKit in NodeJS to add some images to a PDF document. One of the examples is this:

我在NodeJS中使用PDFKit将一些图像添加到PDF文档中。其中一个例子是：

# Fit the image within the dimensions
doc.image('images/test.jpeg', 320, 15, fit: [100, 100])
   .rect(320, 15, 100, 100)
   .stroke()
   .text('Fit', 320, 0)

I am using pure JS instead of coffeescript and I do not understand how the first line works. How's a key-value pair being passed in as the argument and what'd be the JS equivalent?

我使用纯JS而不是coffeescript，我不明白第一行是如何工作的。如何将键值对作为参数传递，JS等同于什么？

Docs here: http://pdfkit.org/docs/images.html

文档：http：//pdfkit.org/docs/images.html

1 个解决方案

#1

Here's the javascript equivalent

这是javascript等价物

doc.image('images/test.jpeg', 320, 15, {
  fit: [100, 100]
}).rect(320, 15, 100, 100).stroke().text('Fit', 320, 0);

coffee objects don't need curly brackets in many cases. check out http://js2.coffee/ to convert back and forth between coffee and vanilla javascript

在许多情况下，咖啡对象不需要花括号。看看http://js2.coffee/在咖啡和香草javascript之间来回转换

#1