[Xerte] indexOf and arrays

[Julian Tenney]

These are the additional methods. Randomize() is a handy one. Contains() is just faster than findValue(), but it just returns Boolean rather than an index.

Array.prototype.sum = function() {
                var sum = 0;
                for (var i = 0; i<this.length; i++) {
                                sum += this[i];
                }
                return sum;
};
Array.prototype.sumTo = function(index) {
                var sum = 0;
                for (var i = 0; i<index; i++) {
                                sum += this[i];
                }
                return sum;
};
Array.prototype.contains = function(searchValue) {
                var i = this.length;
                while (i--) {
                                if (this[i] == searchValue) {
                                                return true;
                                }
                }
                return false;
};
Array.prototype.findValue = function(val) {
                var output = [];
                for (var i = 0; i<this.length; i++) {
                                if (this[i] == val) {
                                                return i;
                                }
                }
                return -1;
};
Array.prototype.deleteAtIndex = function(index) {
                this.splice(index, 1);
};
Array.prototype.randomize = function() {
                return this.sort(function (a, b) {
                                return (Math.floor(Math.random()*2) == 0) ? 1 : -1;
                });
};
Array.prototype.intersect = function(arr1, arr2) {
                var iSectArray:Array = new Array();
                var iSectObject:Object = new Object();
                for (var e1 = 0; e1<arr1.length; e1++) {
                                for (var e2 = 0; e2<arr2.length; e2++) {
                                                if (arr1[e1] == arr2[e2]) {
                                                                iSectObject[arr1[e1]] = "";
                                                }
                                }
                }
                for (var elem in iSectObject) {
                                iSectArray.push(elem);
                }
                iSectArray.sort();
                return iSectArray;
};

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: 21 October 2010 18:23
To: Xerte list
Subject: RE: [Xerte] indexOf and arrays

Cool.

Case sensitive?

________________________________
From: Julian.Tenney at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk
Date: Thu, 21 Oct 2010 18:05:58 +0100
Subject: RE: [Xerte] indexOf and arrays
check the help: I added a load of Authorware style methods to the array class for findValue, contains, etc

________________________________
From: xerte-bounces at lists.nottingham.ac.uk [xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett [d_b_burnett at hotmail.com]
Sent: 21 October 2010 17:52
To: Xerte list
Subject: RE: [Xerte] indexOf and arrays
Found it.

I thought an array of strings would be treated as such, but apparently not. :-)

attributeArray.toString().indexOf('graphic');

________________________________
From: Patrick.Lockley at nottingham.ac.uk
To: xerte at lists.nottingham.ac.uk
Date: Thu, 21 Oct 2010 17:38:17 +0100
Subject: RE: [Xerte] indexOf and arrays
Can only suggest searching the code, or waiting for Julian.

From: xerte-bounces at lists.nottingham.ac.uk [mailto:xerte-bounces at lists.nottingham.ac.uk] On Behalf Of Dave Burnett
Sent: 21 October 2010 17:31
To: Xerte list
Subject: [Xerte] indexOf and arrays


Can I check for an array value

I debug my array and get this:

graphic,text,index

But,

debug(attributeArray.indexOf('graphic')); //returns undefined.

indexOf not supported or my syntax stinks?

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