CodePen Embed - Error handling in JavaScript: the onerror method

 
   <body>
      <p>Click here to check out the error:</p>
      
      <form>
         <input type="button" value="Hold Tight!" onclick="myFunc();" />
      </form>
      
   </body>

 window.onerror = function () {
               alert("An error occurred.");
            }

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