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JavaScript Error message Property

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  • Last Updated : 19 May, 2022
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Below is the example of the Error message property.

  • Example: 

JavaScript




<script>
    try {
         alert("A computer science portal");
        }
     catch(err) {
         document.write(err.message);
        }
</script>


  • Output:
allert is not defined

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: 

Example 1: 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;">
            GeeksforGeeks
        </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 2: This example displays an error message when use misspelled ‘alert’ statement. 

html




<!DOCTYPE html>
<html>
    <body style="text-align: center;">
        <h1 style="color: green;">
            GeeksforGeeks
        </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>                        


Output:

  

Supported Browsers: The browser supported by JavaScript Error Message Property are listed below:

  • Google Chrome
  • Firefox
  • Internet Explorer
  • Opera
  • Safari

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