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/ 12 Years ago, mon, october 1, 2012, 12:00:00
I'm trying to create a function that will run through an array and collect it's value to a string that looks like this: '[1,2,3]'. I also need it to present only part of the array in some cases, according to a given index. For example: the array [1,2,0] printed from index 0 to index 1 will look like this: '[1,2]'. For some reason my function don't give any output at all. Here it is:
function Tower(size, isFull) {
this.count = 0;
this.tower = new Array(size);
this.add = function(disk) {
this.tower[this.count++] = disk;
};
if (isFull) {
for (var i = 1; i <= size; i++) {
this.add(i);
};
}
this.canAdd = function(disk) {
return this.count == 0 || this.tower[this.count - 1] > disk;
};
this.getTopDiskValue = function() {
return (this.count > 0) ? this.tower[this.count - 1] : 0;
};
this.popTop = function() {
return this.tower[--this.count];
};
this.isFull = function() {
return this.count == this.tower.length;
};
this.printable = function() {
var output = [;
for (var i = 0; i < this.count; i++) {
output += + this.tower[i] + ',';
}
return output.substring(0, output.length() - 1) + (output.length() > 1 ? ']' : );
};
}
I expect the printable() function to return the string so that the code:
var tower = new Tower(3,true);
alert(tower.printable());
will pop an alert box with the text '[1,2,3]' on it.
This object is a translation from Java. It worked great in java btw, I guess the translation is not perfect.
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