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floor()  Math  class method


Returns the largest integer less than or equal to a number.

  • Like all class methods floor() should be used on the class rather than an instance of the class.


Signature Description
Math.floor(value)Returns the largest integer less than or equal to a number.


Parameter Description
valueThe value you wish to find the floor() of:
  • Non-numeric strings returns NaN.
  • Passing no parameter returns NaN.
  • Passing null returns 0.


The code below displays floor() usage.

// Store results in an array.
var floorValues = new Array(6);
floorValues[0] = Math.floor(1.9);
floorValues[1] = Math.floor(-10.8);
floorValues[2] = Math.floor('100.1');
floorValues[3] = Math.floor('five');
floorValues[4] = Math.floor();
floorValues[5] = Math.floor(null);

Press the button below to action the above code:

Related Tutorials

JavaScript Advanced Tutorials - Lesson 4 - Math


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