dom - w3toppers.com

White spaces are required between publicId and systemId

The error message is actually correct if not obvious. It says that your DOCTYPE must have a SYSTEM identifier. I assume yours only has a public identifier. You’ll get the error with (for instance): <!DOCTYPE persistence PUBLIC “http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd”> You won’t with: <!DOCTYPE persistence PUBLIC “http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd” “”> Notice “” at the end in the second one … Read more

addClass and removeClass in jQuery – not removing class

What happens is that your close button is placed inside your .clickable div, so the click event will be triggered in both elements. The event bubbling will make the click event propagate from the child nodes to their parents. So your .close_button callback will be executed first, and when .clickable is reached, it will toggle … Read more

Replacement for deprecated `keypress` DOM event

Since the event is deprecated, you should avoid using it in new code, and plan on removing it from old code. The W3C specification says this about deprecated features: Features marked as deprecated are included in the specification as reference to older implementations or specifications, but are OPTIONAL and discouraged. Only features which have existing … Read more

Getting width & height of an image with filereader

You have to wait for the image to load. Try handling the element inside .onload. I’ve also simplified the process of setting the source of the two elements to how you should be doing it (with jQuery). reader.onload = (function(theFile) { var image = new Image(); image.src = theFile.target.result; image.onload = function() { // access … Read more

Why is iframe.contentWindow == null?

I had this problem last week while playing with iframes (building an rtf editor), and yeah it’s not ready yet. I thought if I put it in a .ready(), it would work, but .ready() is when the DOM is ready, not when the iframe has loaded its contents, so I ended up wrapping my code … Read more

In web browsers, what’s the difference between onblur and onfocusout?

As you know, the onBlur event fires for an element if that element had the focus, but loses it. The onFocusOut event fires in this case, but also triggers if any child element loses focus. For example, you have a div with special formatting because the human is currently editing a field in that area. … Read more

Get Element value with minidom with Python

It should just be name[0].firstChild.nodeValue

How to destroy a DOM element with jQuery?

Is $target.remove(); what you’re looking for? https://api.jquery.com/remove/

How to check null objects in jQuery

Check the jQuery FAQ… You can use the length property of the jQuery collection returned by your selector: if ( $(‘#myDiv’).length ){}

How can I determine the type of an HTML element in JavaScript?

nodeName is the attribute you are looking for. For example: var elt = document.getElementById(‘foo’); console.log(elt.nodeName); Note that nodeName returns the element name capitalized and without the angle brackets, which means that if you want to check if an element is an <div> element you could do it as follows: elt.nodeName == “DIV” While this would … Read more