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<html><body><h1>JavaScript Errors</h1><p>In this example we have written "alert" as "adddlert" to deliberately produce an error.</p><p>The name property of the Error object returns the name of the error and the message property returns a description of the error:</p><p id="demo" style="color:red"></p><script>try { adddlert("Welcome guest!");}catch(err) { document.getElementById("demo").innerHTML = err.name + "<br>" + err.message;}</script></body></html>