Re: Size of an object

On Jun 20, 6:24 pm, Henry <rcornf... (AT) raindrop (DOT) co.uk> wrote:

On Jun 20, 9:21 am, slebetman <slebet... (AT) gmail (DOT) com> wrote:

On Jun 20, 2:29 am, VK <schools_r... (AT) yahoo (DOT) com> wrote:
snip
Of course this piece of knowledge is useless for open
Web-wide solutions.

Or steal the idea and implement your own Dictionary:

But maybe best to steal one written by someone who understands the
issues.

function Dict (obj) {
var that = this;
var internalHash = {};
var internalCount = 0;

if (obj) {
snip
that.count = function () {
return internalCount;
}
}

var d = new Dict({
this : 1,

^^^^
This, the code and the keyword in this context, is a syntax error.

Sorry, should have tested before posting
should have been:

var d = new Dict({
'this' : 1,
that : 2
});

Now add:-

d.remove('constructor');
d.remove('toString');
d.remove('valueOf');
d.remove('isPrototypeOf');

alert(d.count()); // -1

- and observe a significant flaw in that implementaion.

Yeah, forgot about that. The remove method should be:

that.remove = function (key) {
if (internalHash.hasOwnProperty(key)) {
internalCount--;
delete internalHash[key];
}
}