JavaScript Error message Property

Last Updated : 08 Feb, 2023

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;">
        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 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;">
        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>