A customized JavaScript error handler

SearchDomino.com member Hemang Kapadia offers a customized JavaScript error handler that replaces a default Web browser error message with a detailed pop-up.

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With this JavaScript code, you'll be able to create a customized JavaScript error handler that will show a pop-up of the error details. This will replace the default error message at the bottom left of the Web browser.
function customHandler(desc,page,line,chr)  {  alert(
  'JavaScript error occurred! n'
 +'While every effort was made to test this site in a 
variety of browsers on a variety of platforms, 
it seems something still went wrong. Browsers that have 
been tested include Microsoft Internet Explorer 6+ n '
 +'nError description: t'+desc
 +'nPage address:      t'+page
 +'nLine number:       t'+line
 return true

window.onerror = customHandler; 

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