Element-undefined Error Message
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Element Is Undefined Ie8
Go to Page... Thread Tools Search this Thread 01-09-2013, 05:50 AM #1 verydeepwater Member Posts: 85 Karma: 12586 Join Date: Nov 2012 Device: Ipad and Kindle
Element Is Undefined In A Cfml Structure
Fire W3C Validation says: Elements are undefined I am making a fixed layout eBook in xhtml, using Dreamweaver. I am trying to mark out a section using html5 tags:
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Element Is Undefined In Session
Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs element is undefined in a java object of type class Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, jquery element undefined just like you, helping each other. Join them; it only takes a minute: Sign up How do I check if an element is undefined? [duplicate] up vote 2 down vote favorite This question already has an answer http://www.mobileread.com/forums/showthread.php?t=202160 here: Detecting an undefined object property 33 answers How to determine if variable is 'undefined' or 'null'? 18 answers I would like to check to see if a particular attribute of a DOM element is undefined - how do I do that? I tried something like this: if (marcamillion == undefined) { console.log("Marcamillion is an undefined variable."); } ReferenceError: marcamillion is not defined As you can see, the reference error is telling me that http://stackoverflow.com/questions/15633576/how-do-i-check-if-an-element-is-undefined the variable is not defined, but my if check is clearly not working, because it is producing the standard js ReferenceError as opposed to the error message I am looking for in my console.log. Edit 1 Or better yet, if I am trying to determine if the attribute of an element is undefined like this: $(this).attr('value') What would be the best way to determine if that is undefined? javascript share|improve this question edited Mar 26 '13 at 9:44 asked Mar 26 '13 at 9:33 marcamillion 7,12632113235 marked as duplicate by lifetimes, Ash Burlaczenko, Ja͢ck, gabrielhilal, user568109 Mar 26 '13 at 11:29 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. 1 possible duplicate of How to determine if variable is 'undefined' or 'null' and stackoverflow.com/questions/27509/… –lifetimes Mar 26 '13 at 9:35 add a comment| 2 Answers 2 active oldest votes up vote 5 down vote accepted Using typeof: if (typeof marcamillion == 'undefined') { console.log("Marcamillion is an undefined variable."); } Edit for the second question: if ($(this).attr('value')) { // code } else { console.log('nope.') } share|improve this answer edited Mar 26 '13 at 9:46 answered Mar 26 '13 at 9:35 romainberger 2,83911639 Say I have an attribute that I am tr
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow http://stackoverflow.com/questions/15992953/w3c-validation-why-is-the-header-tag-not-accepted the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up W3C Validation - Why is the instead but was just curious why this isn't accepted? html css header w3c share|improve this question edited Apr 13 '13 at 21:10 Danny Beckett 10k145394 asked Apr 13 '13 at 21:08 New_programmer 1001615 4 element is undefined Post all of your code –Adrift Apr 13 '13 at 21:09 3 My guess is a bad doctype. –Danny Beckett Apr 13 '13 at 21:10 The doctype I am using is: , which I believe is the default for Dreamweaver –New_programmer Apr 13 '13 at 21:14 That explains why... my guess was correct. Please see my answer. –Danny Beckett Apr 13 '13 at 21:17 add a comment| 2 Answers 2 active oldest votes up vote 6 down vote accepted The doctype you are using (XHTML 1.0 Strict) is incorrect, since the