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IsNumber(value, [minValue], [maxValue]) Last updated: 02. Feb 2024

Checks if specified value is a number.

Parameters

Name Type Description
value object Value to validate.
minValue (optional) number Specify a minimum value for the number or "null" to skip.
maxValue (optional) number Specify a maximum value for the number or "null" to skip.

Returns

Returns true if value is a number (within the specified range).

Example

Code example (JS)

JS is normal JavaScript either running in the browser or on the Docly™ server. 
let t = "test";

if (!docly.isNumber(t))
    write("'test' is not a number \n");

let n = 123;
if (docly.isNumber(n, 100, 200))
    write("123 is a number between 100 and 200\n");
    
if (!docly.isNumber(n, 1, 10))
    write("123 is NOT a number between 100 and 200");

Output

The JS code above produces the output shown below: 
'test' is not a number 
123 is a number between 100 and 200
123 is NOT a number between 100 and 200