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altHtml property (applet, object)

Browser support:

Sets or retrieves the HTML content that is executed if the object or applet element fails to load.

A value for the altHtml property can be specified in an event handler for the onerror event. For a cross-browser solution, write the HTML content in the object and applet elements. It has the same effect. See the examples for details.

Syntax:

object.altHtml;

You can find the related objects in the Supported by objects section below.

This property is write-only.

Possible values:

String that sets or retrieves the alternate HTML code.

Default: this property has no default value.

Example HTML code 1:

This example illustrates the use of the altHTML property. The alternate HTML content is visible if Java is not installed.

Code

HelloWorld.java

<head>
    <script type="text/javascript">
        function AppletError (applet) {
            applet.altHtml = "<b>The Java Applet cannot be started!</b>";
        }
    </script>
</head>
<body>
    <applet code="HelloWorld.class" codebase="/external/examples/common/java/"
            onerror="AppletError (this);" style="width:200px; height:50px;">
    </applet>
</body>

import java.awt.Graphics;
import java.awt.Font;
import java.awt.Color;

public class HelloWorld extends java.applet.Applet {
    public void init() {
    }
    public void paint(Graphics g) {
        Font font = new Font ("Arial", Font.BOLD, 22);
        g.setFont (font);
        g.setColor (Color.blue);
        g.drawString("Hello world!", 40, 30);
    }
}

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Example HTML code 2:

A cross-browser solution for the previous example:

Code

HelloWorld.java

<body>
    <applet code="HelloWorld.class" codebase="/external/examples/common/java/" style="width:200px; height:50px;">
        <b>The Java Applet cannot be started!</b>
    </applet>
</body>

import java.awt.Graphics;
import java.awt.Font;
import java.awt.Color;

public class HelloWorld extends java.applet.Applet {
    public void init() {
    }
    public void paint(Graphics g) {
        Font font = new Font ("Arial", Font.BOLD, 22);
        g.setFont (font);
        g.setColor (Color.blue);
        g.drawString("Hello world!", 40, 30);
    }
}