Javascript Error Es Nulo O No Es Un Objeto

Contents Null Is Not An Object React Native Typeerror Null Is Not An Object Phantomjs React Native Null Is Not An Object Evaluating Null Is Not An Object Okcupid

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Null Is Not An Object React Native

Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping null is not an object evaluating e strings each other. Join them; it only takes a minute: Sign up Javascript Error Null is not an Object up vote 13 down vote favorite 1 Im getting a error in the Web Inspector as shown below: TypeError: 'null' is

Typeerror Null Is Not An Object Phantomjs

not an object (evaluating 'myButton.onclick = function() { var userName = myTextfield.value; greetUser(userName); return false; }') Here is my Code (HTML):

Hello World!

This is an example website

Here is the JS: var myButton = document.getElementById("myButton"); var myTextfield = document.getElementById("myTextfield"); function greetUser(userName) { var greeting = "Hello " + userName + "!"; document.getElementsByTagName ("h2")[0].innerHTML = greeting; } myButton.onclick = typeerror null is not an object jasmine function() { var userName = myTextfield.value; greetUser(userName); return false; } Any Idea why I am getting the error? javascript html html5 share|improve this question asked Jan 8 '13 at 3:48 Mark H 1692519 This isn't your problem, but I'd recommend using a submit event handler on the form rather than a click event handler on the button. Then it will work if someone presses enter, too. –icktoofay Jan 8 '13 at 4:09 add a comment| 5 Answers 5 active oldest votes up vote 22 down vote accepted Put the code so it executes after the elements are defined, either with a DOM ready callback or place the source under the elements in the HTML. document.getElementById() returns null if the element couldn't be found. Property assignment can only occur on objects. null is not an object (contrary to what typeof says). share|improve this answer edited Mar 29 '13 at 5:24 answered Jan 8 '13 at 3:49 alex 267k129652806 Hi Alex thanks for the quick reply I moved the source. Being new to Javascript could you explain what a DOM ready callback is? But thanks for your answer it helped :) –Mark H Jan 8 '13 at 3:53 1 @MarkH I could, but here is a better explanation. –alex Jan 8 '13 at 3:56 I'm having this error - I am unclear on th

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React Native Null Is Not An Object Evaluating

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Null Is Not An Object Okcupid

Trial Editions: US United States Australia United Kingdom Japan Membership Membership My Profile People Subscriptions My stuff Preferences Send a message Log Out TechRepublic typeerror 'null' is not an object (evaluating 'a.length') r | Forums | Browser Browser Register Now or Log In to post Welcome back, My Profile Log Out Recent Activity FAQs Guidelines Question 0 Votes Locked null is null or not an object undefined : javascript error By a_do12 http://stackoverflow.com/questions/14207922/javascript-error-null-is-not-an-object · 7 years ago I have a user with javascript error in IE 8.error message: Null is null or not an object undefined.Error appears on every web site. I tried to reset IE 8 but error still show up.I even set security setting and privacy setting to default level. Error isn't resolved. Should I disable javascript debugging on IE 8 ?would problem be fixed if I turn off IE compatibility mode in IE 8 ? Share Flag This conversation http://www.techrepublic.com/forums/discussions/null-is-null-or-not-an-object-undefined-javascript-error/ is currently closed to new comments. 10 total posts (Page 1 of 1)   + Follow this Discussion · | Thread display: Collapse - | Expand + All Answers Collapse - null is null or not an object undefined : javascript error by mark_ivey4 · 7 years ago In reply to null is null or not an ob ... I have seen this error before with IE8 and there are numerous posts for the resolution which for the most part suggest a re-arrangement of the javascript code. And while this may be a suitable resolution for programmers that are writing and publishing the code when the problem is identified, unfortunately it isn't a viable solution for the end-users.In my instance of providing support for resolving the issue, the quick and dirty solution was to simply remove IE8 and revert back to IE7 which totally resolved the error.I assisted my client with removal of all JAVA installs (e.g. the JRE and updates) and also IE8, rebooted and reinstalled but the problem was still prevalent. It would appear as though IE8 (sometimes) has a problem with the interpretation of the jscripting or rather interprets it differently than IE7 which causes the problem. Strangely enough, other users running IE8 accessing the same page won't have any issues at all. Which would lead to speculation that there is a specific component that is being used by IE8 whi

'className' es nulo o no es http://www.forosdelweb.com/f13/solucionado-classname-nulo-no-objeto-509452/ un objeto Estas en el tema de SOLUCIONADO: 'className' es nulo o no es un objeto en el foro de Javascript en Foros del Web. Buenas, tengo este código (lo pongo completo por si lo quieren probar): Código: