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JavaScript Math floor() Method

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  • Difficulty Level : Medium
  • Last Updated : 23 Feb, 2022

Below is the example of the Math floor() Method. 

  • Example: 


<script type="text/javascript">
         document.write("Result : " + Math.floor(.89));

  • Output: 
Result : 0

The Math.floor method is used to round off the number passed as a parameter to its nearest integer in Downward direction of rounding i.e. towards the lesser value.


Parameters: This method accepts single parameter asmentioned above and described below: 

  • Value: It is the value which is to be tested for Math.floor.

Return Value: The Math.floor() method returns the smallest integer greater than or equal to the given number.
Below examples illustrate the Math floor() method in JavaScript: 

  • Example 1: 
Input : Math.floor(.89)
Output: 0


  • Example 2: 
Input :  Math.floor(-89.02)
Output : -90


  • Example 3: 
Input : Math.floor(0)
Output : 0

More codes for the above method are as follows:
Program 1: When a negative number is passed as a parameter. 


<script type="text/javascript">
         document.write("Result : " + Math.floor(-89.02));


Result : -90

Program 2: When zero is passed as a parameter. 


<script type="text/javascript">
         document.write("Result : " + Math.floor(0));


Result : 0

Supported Browsers: 

  • Google Chrome 1 and above
  • Internet Explorer 3 and above
  • Firefox 1 and above
  • Opera 3 and above
  • Safari 1 and above


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