Isnan function in javascript
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I am using it in a matrix report which displays the percentage % calculation for project hours of a department. There might be where a department has no project hours clocked and I would like to output 0% Can anyone help? IsNan PercentageExpression , 0, PercentageExpression i. Hi All, I would like to ask regarding the IsNan function. This function also returns a Boolean value indicating whether an expression can be evaluated as a number. For example, dividing zero by zero results in a NaN — but dividing other numbers by zero does not. Note that the method is associated with System.

A NaN also results from attempted coercion to numeric values of non-numeric values for which no primitive numeric value is available. This way you can have a function that makes use of the full versatility JavaScript provides by implicitly converting values depending on context. Return value true if the given value is ; otherwise, false. It only outputs error in my report. I google the use of IsNan, it's basically - a Javascript function that used to check if a value is not a number.

The resulting value is then tested to determine whether it is. Origin of NaN values NaN values are generated when arithmetic operations result in undefined or unrepresentable values. Syntax isNaN v alue Parameters value The value to be tested. Actually, isNaN x , isNaN x - 0 , isNaN Number x , Number. How is it used and what is its output? I am using it in an if statement and cant seem to get a result.

Hope that helps in clarifying concepts. True if the Expression evaluates to not a number; otherwise, false. Regards, Jerry Fadzli, Not sure if there is a IsNan function that you can use as an expression. Such values do not necessarily represent overflow conditions. IsNumber itself returns true or false whether the value of a field is a number or not. Value Regards, Subir Sankar Das.

Alternatively, in absense of Number. Confusing special-case behavior Since the very earliest versions of the isNaN function specification, its behavior for non-numeric arguments has been confusing. Edit: Not sure if you need that Not in the front. . IsNan sum expression , 0, sum expression A question: what value does IsNan returns? Regards, Syed Mehroz Alam Hi Fadzli, The Double.

If it returns true, x will make every arithmetic expression return NaN. Hence, the necessity of an isNaN function. When the argument to the isNaN function is not of type , the value is first coerced to a Number. I went and search around on the net and found something similar to what Syed did. . . .

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