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How to use abs function

不言Original: 2019-01-26 14:38:3519223browse

The Abs function of How to use abs function is one of the Math functions. It is used to return the absolute value of a specified expression. This article will introduce you to the specific usage of the Abs function.

Let’s first look at the syntax of the abs function

Math.abs( x ) ;

x is a number or valid numerical expression to find the absolute value .

If the parameter x is positive or negative, the abs() function will return the absolute value in How to use abs function.

If the parameter x is not a number, the abs() function will return NaN.

When the parameter x is Null, the abs() function returns 0 as the absolute value in How to use abs function.

Let’s look at a specific example

The code is as follows

<!DOCTYPE html>
</html>
<html> 
<head> 
    <title> How to use abs function abs函数</title> 
</head> 
<body> 
  <h1> How to use abs function abs函数</h1> 
  <p id="Pos"> </p> 
  <p id="Neg"> </p> 
  <p id="Dec"> </p> 
  <p id="Neg_Dec"> </p> 
  <p id="Str"> </p> 
  <p id="Exp"> </p> 
  <p id="Null"> </p> 
  <p id="Multi"> </p> 
  <script> 
    document.getElementById("Pos").innerHTML = Math.abs(20);
    document.getElementById("Neg").innerHTML = Math.abs(-20);
    document.getElementById("Dec").innerHTML = Math.abs(10.45);
    document.getElementById("Neg_Dec").innerHTML = Math.abs(-6.45);
    document.getElementById("Str").innerHTML = Math.abs("How to use abs function");
    document.getElementById("Null").innerHTML = Math.abs(null);
    document.getElementById("Multi").innerHTML = Math.abs(2 + 55 - 77);
  </script> 
</body> 
</html>

The display effect on the browser is as follows

How to use abs function

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