Using the onError Event Handler : Error Exceptions « Development « JavaScript DHTML






  1. JavaScript DHTML
  2. Development
  3. Error Exceptions

Using the onError Event Handler


<HTML>
<HEAD>
<TITLE>Handling Errors with onError</TITLE>
<SCRIPT><!--
function errorHandler(errorMessage,url,line) {
 document.write("<P><B>Error message:</B> "+errorMessage+"<BR>")
 document.write("<B>URL:</B> "+url+"<BR>")
 document.write("<B>Line number:</B> "+line+"</P>")
 return true
}
   
onerror = errorHandler
// --></SCRIPT>
</HEAD>
<BODY>
<H1>Handling Errors with onError</H1>
<FORM>
<INPUT TYPE="BUTTON" ONCLICK="createAnError()"
VALUE="Click here to generate an error.">
</FORM>
</BODY>
</HTML>








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1.Catching the 'Object Expected' Error
2.Throwing an Error
3.Catching an Error
4.Controlling Script Errors
5.An Exception Handling Example
6.Nested Exception Handling (This script only works with Internet Explorer 5, Navigator 6, or later browsers)
7. Throwing String Exceptions
8.Throwing an Error Object Exception
9.A Custom Object Exception