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Javascript Try Without Catch
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Javascript Catch All Errors
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Sheppy cvrebert fscholz jpmedley teoli DomenicDenicola devinrhode2 kscarfone user01 Brettz9 CHaoSlayeR DOMException In This Article ConstructorAttributesError namesSpecificationsBrowser compatibilitySee also The DOMException interface represents an abnormal event (called an exception) which occurs as a result http://www.w3schools.com/js/js_errors.asp of calling a method or accessing a property of a web API. This is basically how error conditions are described in web APIs. Each exception has a name, which is a short "CamelCase" style string identifying the error or abnormal condition. Constructor DOMException() Returns a DOMException object with a specified message and name. Attributes DOMException.code Read only Returns a short that contains one of the error code constants, or https://developer.mozilla.org/en-US/docs/Web/API/DOMException 0 if none match. This field is used for historical reasons, new kind of DOM exceptions don't use anymore: they put this info in the DOMException.name attribute. DOMException.name Read only Returns a DOMString that contains one of the strings associated with an error name. Error names Common error names are listed here. Some APIs define their own sets of names, so this is not necessarily a complete list. Because historically the errors were identified by a numeric value which corresponded with a named variable defined to have that value, some of the entries below indicate the legacy code value and constant name which were used in the past. IndexSizeError The index is not in the allowed range. For example, this can be thrown by Range object. (Legacy code value: 1 and legacy constant name: INDEX_SIZE_ERR) HierarchyRequestError The node tree hierarchy is not correct. (Legacy code value: 3 and legacy constant name: HIERARCHY_REQUEST_ERR) WrongDocumentError The object is in the wrong Document. (Legacy code value: 4 and legacy constant name: WRONG_DOCUMENT_ERR) InvalidCharacterError The string contains invalid characters. (Legacy code value: 5 and legacy constant name: INVALID_CHARACTER_ERR) NoModificationAllowedError The object can not be modified. (Legacy code value: 7 and legacy constant name: NO_MODIFICATION_ALLOWED_ERR) NotFoundError The object
(more…) IE7 FF1.5+ SA1.3+ OP9+ None Full Full Full Examplevar node = document.getElementsByTagName('h1').item(0); var refnode = node.nextSibling; var newnode = document.createTextNode('That is why you fail.'); node.insertBefore(newnode, refnode); The example above shows an insertBefore http://reference.sitepoint.com/javascript/DOMException operation that will fail, because refnode is not a child of node. That operation produces the following exception in Opera: Inline script thread Error: Unhandled Exception: [Object DOMException] code: 8 message: NOT_FOUND_ERR DescriptionThe DOMException https://teamtreehouse.com/community/javascript-interactive-web-page-question-error-the-dom interface represents a processing error, for example when trying to create an invalid DOM, or passing a non-existent node as an argument to node manipulation methods. An exception is raised when an operation is javascript error impossible to perform, ie. in "exceptional" circumstances. The DOM does not define an exception for every possible error that might occur, for example syntax errors in arguments are not included, and in such cases an implementation will use its own error reporting mechanism to deal with them. : How DOM Exceptions are implemented in modern browsers In practise, what we find is that most browsers implement DOM exceptions javascript error message as part of their native mechanism, passing the exception code and message as the details of the error, along with any additional information the browser is able to provide (such as line number or stacktrace). Exceptions in JavaScript can be handled using the try...catch...finally construct. Compatibility Internet Explorer Firefox Safari Opera 5.5 6.0 7.0 1.5 2.0 3.0 1.3 2.0 3.0 9.0 9.5 None None None Full Full Full Full Full Full Full Full Internet Explorer does not implement this interface, and uses its native error reporting syntax only; for example, the example above would throw Invalid argument). In XML a more informative description will be given — for this example, Insert position Node must be a Child of the Node to insert under. : Caveat for Safari Safari 1.3 and 2 do not report the error name, only the error code. However this is not documented as a bug because the specification does not define error names as properties of the DOMException object. ConstantsThe interface defines ExceptionCode integers — exposed through the code property — to refer to each type of error; these are defined by the following constants: INDEX_SIZE_ERR code 1 If an index is negative, or larger than the
10,897 Points Javascript Interactive Web Page question error - the DOM I think there is an error with the question the DOM stands for: I enter Document Object Model - and I get an incorrect 3 Answers MOD Sean T. Unwin Front End Web Development Treehouse Moderator 25,607 Points Sean T. Unwin Sean T. Unwin Front End Web Development Treehouse Moderator 25,607 Points about 2 years ago Are you hitting Tab after each word? There are 3 text inputs - one for each word. Ben Friedman 10,897 Points Ben Friedman Ben Friedman 10,897 Points about 2 years ago Wow I didn't even see the underline spaces - they all just blended together. THANKS! Andrew Chalkley Treehouse Teacher Andrew Chalkley Andrew Chalkley Treehouse Teacher 2y ago I've now changed the quiz so you fill in 1 blank with 3 words. Hopefully this should resolve some confusion. The interface doesn't make it that clear. Ben Friedman 10,897 Points Ben Friedman Ben Friedman 10,897 Points about 2 years ago Thanks Andrew! I'm really happy with your videos on JS - I've been learning a ton, as well as with the jquery tuts. I would love to see more real world application examples made from scratch. That helps me the most on moving towards feeling comfortable doing something on my own. Anyways thanks again for your hard work. Cheers! Posting to the forum is only allowed for members with active accounts. Please sign in or sign up to post. Our mission is to bring affordable, technology education to people everywhere, in order to help them achieve their dreams and change the world. Our Company About Us Contact Us Community Treehouse Stories Student Perks Treehouse Blog Affiliate Program Careers Topics HTML CSS Design JavaScript Ruby PHP WordPress iOS Android Development Tools Business Tracks Web Design Web Development Rails Development PHP Development iOS Development Android Development WordPress Development Starting a Business Treehouse Blog About Treehouse Privacy Policy Terms & Conditions © 2016 Treehouse Island, Inc. Sign in Email Address Password I forgot my password Sign in