What Does #Document Mean

What does document mean in a NLP context?

Document in the tf-idf context can typically be thought of as a bag of words. In a vector space model each word is a dimension in a very high-dimensional space, where the magnitude of an word vector is the number of occurrences of the word (term) in the document. A Document-Term matrix represents a matrix where the rows represent documents and the columns represent the terms, with each cell in the matrix representing # occurrences of the word in the document. Hope it's clear.

What does #document mean?

Just to summarize on what I learnt and implemented.

1. #document is a virtual element, which doesn't really mean anything.

2. If you have mulitple frames/framesets, you will have to switch frames.

   a. so first get to the default content.
   driver.switch_to_default_content()

   b. then get to the frame that you want to work with.
   frame = driver.find_element_by_name('mainFrame')

3. Then play with the elements in that frame.

What is the difference between Document and document in JavaScript?

What is the difference between Document and document?

document (or window.document) is a reference to the document contained in the window. (spec)

Document is the DOM interface for documents, which is exposed on the global object. (spec, spec)

How does one use Document (as it is not a function, therefore, not constructable)?

It's a host object and does not need to follow the EcmaScript spec - yet that does not mean it's not a function. It may differ from browser to browser as well. Yet it is not intended to be called (if you try it you'll get a NOT_SUPPORTED_ERR), there are other methods to instantiate/obtain new documents. What you can still use it for is

> document instanceof Document
true
> Document.prototype
DocumentPrototype {
    adoptNode: Function
    constructor: Document
    createAttribute: Function
    …
    querySelector: Function
    querySelectorAll: Function
}
|- NodePrototype
|- Object

so you could extend its prototype and use those methods on all XMLDocuments/HTMLDocuments in your app (but only if you know what’s wrong with extending the DOM).

Most importantly, what is the harm in "monkey-patching" Document to make it constructable?

I'm not sure how you would do that. Overwriting it could harm every script that expects it to work as above (unless you fix the prototype property of your new function). And maybe the Document property of window is non-writable in some environments, so you could harm yourself.

What does document.all mean?

document.all() is a non-standard way of accessing DOM elements. It's been deprecated from a few browsers. It gives you access to all sub elements on your document.

document.getElementById() is a standard and fully supported. Each element has a unique id on the document.

What is document use for in JavaScript?

The global object "document" represents the HTML document which is displayed in the current browser window.

document.slider refers to the HTML tag with the property id="slider". Note that this way of referring to document nodes is deprecated because of potential naming conflicts with the other properties and functions of the document object. A much better way is to use document.getElementById("slider").

.src accesses the src property of that HTML tag (when it's an image, it's the URL to the image file).

img seems to be an array of images which was created or retrieved earlier. Presumably with a call to document.images() which returns an array with all <img> HTML tags on the page. img[number] refers to an element of that array. number is a variable which most likely contains a number. It says which element of the array is accessed. When number=3, for example, the 4th element of the array is accessed, because arrays start counting with 0. The property .src of that image node is then retrieved and assigned to the .src of the slider.

What does $(document.body) mean in javascript?

$ is the name of a function. It is being passed the document's body DOM element. Typically $ is used to represent a JavaScript library. Most commonly jQuery. In jQuery it selects the body element.

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