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Basic Javascript question

Pavan Kumar Dittakavi
Ranch Hand

Joined: Feb 12, 2011
Posts: 104

Hi All,

Can someone please tell me what the following statments mean? Im totally confused



I know that these are basic js questions. But Im really not able to comprehend these things here. Im very much new to js . Please suggest.

Thanks,
Pavan.
Bear Bibeault
Author and ninkuma
Marshal

Joined: Jan 10, 2002
Posts: 61092
    
  66

1. No the function is not called by this statement. Functions are first class objects in JavaScript so references to them can be passed around. Here, the actionCall property is being assigned as a reference to the function.

2. tbody sounds like it's a reference to a tbody element, so this is simply traversing the DOM tree. (Would be lots and lots easier using jQuery.)

3. Yes.


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Eric Pascarello
author
Rancher

Joined: Nov 08, 2001
Posts: 15376
    
    6
tbody.firstChild.lastChild.firstChild

Start with a tbody element
first child of the tbody would be the first tr element
last child of the tr would be the last cell [td or th]of the table
first child of the cell would be the first element in it.

Eric

 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Basic Javascript question