JavaScript Error message Property

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In JavaScript error message property is used to set or return the error message.

Syntax:

errorObj.message

Return Value: It returns a string, representing the details of the error. More example codes for the above property are as follows:

Below is the example of the Error message property.

Example 1:

JavaScript

try { 
    allert("A computer science portal"); 
} 
catch(err) { 
    document.write(err.message); 
}

Output:

allert is not defined

Example 2: This example does not contains any error so it does not display error message.

html

<!DOCTYPE html> 
<html> 
  
<body style="text-align: center;"> 
    <h1 style="color: green;"> 
        zambiatek 
    </h1> 
  
    <h3> 
        JavaScript Error Message Property 
    </h3> 
  
    <p id="gfg"></p> 
  
    <script> 
        try { 
            alert("A computer science portal"); 
        } 
        catch(err) { 
            document.getElementById("gfg").innerHTML 
                    = err.message; 
        } 
    </script> 
</body> 
  
</html>

Output:

Example 3: This example displays an error message when use misspelled ‘alert’ statement.

html

<!DOCTYPE html> 
<html> 
  
<body style="text-align: center;"> 
    <h1 style="color: green;"> 
        zambiatek 
    </h1> 
  
    <h3> 
        JavaScript Error Message Property 
    </h3> 
  
    <p id="gfg"></p> 
  
    <script> 
        try { 
            popup("A computer science portal"); 
        } 
        catch(err) { 
            document.getElementById("gfg").innerHTML 
                    = err.message; 
        } 
    </script> 
</body> 
  
</html>