Angular = getting invalid array length

Question

I have the following function in my controller...

$scope.pagerPages = function (n) {
    var i = Math.ceil(n);
    return new Array(i);
}

the n comes from an expression on the view, and can sometimes be a fraction. Which is why I've done Math.ceil on n.

Anyone know why I would be getting this error?

Invalid array length

EDIT; n is a calculation from the view

<div ng-repeat="i in pagerPages( report.TotalNumRows / report.View.PageSize ) track by $index">
...
</div>

the calculation results in 11.2, which is evidentally working, as on the page i get 12 iterations of the div element, yet it's generating this error?

Did you fix this issue? I am testing code that has the same problem. — Winnemucca
– Winnemucca, Commented Apr 6, 2016 at 17:11
i had completely forgotten about this, yes, i discovered that the issue was a negative number. — Stuart
– Stuart, Commented Apr 8, 2016 at 15:15

atmd · Accepted Answer · 2015-07-28 15:08:57Z

3

Check the value of i. I suspect it's negative

Even if n was a string or an object it would still work. You'd only get that error is i is a negative number.

i.e. new Array({}) or new Array('ergerg') wont give you an error, but new Array(-2) will give you the error you have

answered Jul 28, 2015 at 15:08

atmd

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