While I appreciate the completeness of the accepted answer, I found this answer to be of use re: accessing, in JS code, a value entered in a DOM text input element (text box).
The better solution that answers the question How to check if element exists in the visible DOM? with any element, even elements without id s is to do document.body.contains(element).
This is because, according to the DOM specification, any string of text within an element is considered a child node of that element. AND "To avoid memory leaks, jQuery removes other constructs such as data and event handlers from the child elements before removing the elements themselves."
el.style.cssText += ';-webkit-transform:rotateZ(0deg)' el.offsetHeight el.style.cssText += ';-webkit-transform:none' As in, tweak some unused CSS property, then ask for some information that forces a redraw, then untweak the property. Unfortunately, the bright team behind Chrome for the Mac seem to have found a way to get that offsetHeight without redrawing. Thus killing an otherwise useful ...
The DOM Level-2 has Mutation event types, but older version of IE don't support it. Note that the mutation events are deprecated in the DOM3 Events spec and have a performance penalty. You can try to emulate mutation event with onpropertychange in IE (and fall back to the brute-force approach if non of them is available).
DOM -> Document Object Model in JavaScript is the API to access the elements inside the document. It maps the entire Document into an hierarchy of parent and child tree.
Is there any way that I can check if an element is visible in pure JS (no jQuery) ? So, given a DOM element, how can I check if it is visible or not? I tried: window.getComputedStyle(my_element)['d...
This uses cloneNode() to clone the elem DOM object, which ignores all event handlers (though, as Jan Turoň's answer notes, attributes like onclick="…" will remain. See that answer for how to remove those). It then uses replaceWith() to replace elem with that clone. Simple assignment to an anonymous clone wasn't working for me.
JavaScript can't read any element style property (elem.style) coming from css (internal/external) unless you use the built in method call getComputedStyle in javascript. getComputedStyle (element [, pseudo]) Element: The element to read the value for. pseudo: A pseudo-element if required, for instance ::before.
