Can't find 'Prototype' syntax in JavaScript Bible'

[SmallPaul]

'JavaScript Bible' v6 by Danny Goodman doesn't seem to describe the
snytax used in Prototype.js. Namely, I could not find discussion of
'Object.extend' and the ':' feature (e.g., 'toColorPart:'), as in:

Object.extend(Number.prototype, {
toColorPart: function() {
var digits = this.toString(16);
if (this < 16) return '0' + digits;
return digits;
},

Similarly (or perhaps, not so similar), what this is about:

var Try = {
these: function() {
....
}
}

Can someone please tell me where to find this in the book, or if it's
not covered, where I can read up on this syntax.

Thanks
- Paul

 

[David Mark]

'JavaScript Bible' v6 by Danny Goodman doesn't seem to describe the
snytax used in Prototype.js.  Namely, I could not find discussion of

Why would it? Prototype is a library.

'Object.extend' and the ':' feature (e.g., 'toColorPart:'), as in:

The ": feature" is part of the object literal syntax. That should be
in any "JavaScript Bible."

The Object.extend method is silly. It was clearly dreamed up by a
person who didn't understand the inheritance features of the language.

Object.extend(Number.prototype, {
  toColorPart: function() {
    var digits = this.toString(16);
    if (this < 16) return '0' + digits;
    return digits;
  },

Similarly (or perhaps, not so similar), what this is about:

var Try = {
  these: function() {
   ....
  }

}

I am not sure. It looks like a wrapper for try/catch.

Can someone please tell me where to find this in the book, or if it's
not covered, where I can read up on this syntax.

Try a Prototype newsgroup if you feel you really want to use that
thing. You are really better off without it.

 

[Gregor Kofler]

SmallPaul meinte:

'JavaScript Bible' v6 by Danny Goodman doesn't seem to describe the
snytax used in Prototype.js. Namely, I could not find discussion of
'Object.extend' and the ':' feature (e.g., 'toColorPart:'), as in:

Object.extend(Number.prototype, {
toColorPart: function() {
var digits = this.toString(16);
if (this < 16) return '0' + digits;
return digits;
},

Similarly (or perhaps, not so similar), what this is about:

var Try = {
these: function() {
....
}
}

Can someone please tell me where to find this in the book, or if it's
not covered, where I can read up on this syntax.

That's JS object notation. There are plenty of ressources on that on the
web. One randomly picked:
<http://msdn2.microsoft.com/en-us/library/bb299886.aspx#intro_to_json_topic2>

Gregor

 

[Thomas 'PointedEars' Lahn]

'JavaScript Bible' v6 by Danny Goodman doesn't seem to describe the
snytax used in Prototype.js.

That's too bad because both have been written by people who don't know
J(ava)Script.


PointedEars