isFloat()

isFloat(value): boolean

Checks if a value is a float (finite number that is not an integer).

remarque

This checks for numbers that have a decimal part.

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Parameters

value: unknown

The value to check.

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Returns: boolean

true if the value is a float, false otherwise.

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Since

2.0.0

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Example

isFloat(1.5);       // => true
isFloat(1.0);       // => false
isFloat(1);         // => false
isFloat(Infinity);  // => false
isFloat('1.5');     // => false

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How it works?

Checks if a value is a float (finite number with decimal part).

Examples

Value	Result	Reason
1.5	true	Has decimal
1.0	false	No decimal part
1	false	Integer
Infinity	false	Not finite
-Infinity	false	Not finite
NaN	false	Not finite
'1.5'	false	Not a number

Float vs Integer

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Use Cases

Detect decimal numbers 📌

Check if a number has a fractional part. Useful for differentiating integers from floating-point values in data parsing.

#detect#float#decimal#fractional#precision#numbers

if (isFloat(price)) {
  console.log(`Precise price: ${price}`);
}

Validate geometric coordinates

Ensure coordinates are precise floating-point numbers. Perfect for mapping applications or graphics rendering.

#validate#coordinates#geometric#precision#mapping#GPS

if (isFloat(latitude) && isFloat(longitude)) {
  updateMarkerPosition(latitude, longitude);
}