Childnodes Null Not Object Error
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Childnodes Undefined
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Uncaught Typeerror: Cannot Read Property 'childnodes' Of Null
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Cannot Read Property 'childnodes' Of Null Lightning
may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. SitePoint Sponsor User Tag List Results 1 to 4 of 4 Thread: error:childNodes.0 is null or not a object Thread Tools Show Printable Version Subscribe to this Thread… Display cannot read property childnodes of null salesforce Linear Mode Switch to Hybrid Mode Switch to Threaded Mode Aug 1, 2008,00:07 #1 dvddesign View Profile View Forum Posts SitePoint Zealot Join Date Oct 2004 Location world Posts 128 Mentioned 0 Post(s) Tagged 0 Thread(s) error:childNodes.0 is null or not a object Hi, The following script shows text(in a fixed position ie.class="yui-g") when mouse pointer over a image . This works fine in firefox but shows error in IE and it opera it doesnot show text ! Error: childNodes.0 is null or not a object . Code JavaScript: function shtext(s) { var proj=document.getElementById("CaptionName"); proj.childNodes[0].nodeValue=s; } function removetext() { var proj=document.getElementById("CaptionName"); proj.childNodes[0].nodeValue="\r"; } Code HTML4Strict: Code CSS:
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 uncaught typeerror cannot read property 'childnodes' of null jquery this site About Us Learn more about Stack Overflow the company Business cannot read property 'childnodes' of undefined angularjs Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask cannot read property 'childnodes' of undefined javascript 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 http://www.sitepoint.com/forums/showthread.php?563137-error-childNodes-0-is-null-or-not-a-object up Javascript Error Null is not an Object up vote 12 down vote favorite 1 Im getting a error in the Web Inspector as shown below: TypeError: 'null' is 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 = 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 1642519 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 21 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|imhas 0 verified answers | 10 Replies | 5 Followers cmdrew Points 2,530 Replied On: Thu, Jun 25 2009 11:54 AM Reply Hi, I'm very new to web development and the UltraWebGrid :-) I have a very simple UltraWebGrid within an asp:wizard control. I manually add rows to the grid as http://www.infragistics.com/community/forums/t/27856.aspx the data is not coming from a database as such. All is fine so far and I have http://www.techrepublic.com/forums/discussions/null-is-null-or-not-an-object-undefined-javascript-error/ implemented my own crude form of 'move row up/down' to allow ordering. When I click on the cell which contains a button, after my server side button handler is called I receive a JavaScript error as above. I also get this same error when I simply move to the next page in the wizard so I guess it is as a result of a postback in the grid. I cannot read have no idea what could cause this as the error appears to be coming from the grid which is as I said very simple. Any ideas are most welcome! Reply Post Points: 35 All Replies [Infragistics] Sarita Nanda Points 3,732 Replied On: Mon, Jun 29 2009 8:21 AM Reply Hello, It seems the JavaScript error is raised after a postback. However, in order to nail down the issue, I would like to clarify few things. Here is my list of questions: 1) Which version of cannot read property NetAdvantage controls, Visual Studio and .Net Frameworkare you using? 2) Are you using AJAX? If yes, then are you using Update Panel or the built-in AJAX of the UltraWebGrid? 3) Whichclient sideandserver side events are you handling on the Grid? 4) What is the exact error message are you getting? 5) What happens when the Grid is outside of the Wizard control? Do you still get the same error? Please let me know the answers in details. Thanks Sarita Nanda Developer Support Engineer Infragistics, Inc. Need More Help from Infragistics? Click here Reply Post Points: 20 cmdrew Points 2,530 Replied On: Mon, Jun 29 2009 8:31 AM Reply Hi Sarita, I am using NetAdvantage 8.1 - the full version is 8.1.20081.2058. Visual Studio 2005 and .NET 2.0. I my using the grid in its simplest form - just to show a list of items which I dynamically create by adding rows and cells to the grid. I have ensured that the rows/cells are included in the ViewState. I do not subscribe to ANY client or server side events. The grid is flat - I only use one band which actually only contains 3 rows each with 4 cells. I have tested with pure text cells and still get the same error. I have attached a screen shot of the error I get. I haven't tried the gird outside of the wizard yet but I would guess if it did a post back then the error would occur. Another post has suggested that 8.1 is not
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