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  2. JavaScript hide/show element - Stack Overflow

    stackoverflow.com/questions/6242976

    Javascript: $("#element_to_hide").hide(); // To hide $("#element_to_hide").show(); // To show Pros: Always works. After unhiding, it will return back to using the previous display value. You will always know which state you are swapping to so you: don't need to add if statements to check visibility before changing states if the state matters.

  3. @AlikElzin-kilaka element here is just a variable, not the "element" type. The keyword to look up is "this" but it's not exactly a simple keyword in javascript. – cde

  4. The formula used in @caveman's post to calculate the scroll-to value is: const y = window.scrollY + element.getBoundingClientRect().top; This formula gets the current absolute position (window.scrollY) and adds the delta of the element 's bounding rectangle top position (relative to the top of the viewport).

  5. To retrieve the position relative to the page efficiently, and without using a recursive function: (includes IE also) var element = document.getElementById('elementId'); //replace elementId with your element's Id. var rect = element.getBoundingClientRect(); var elementLeft,elementTop; //x and y.

  6. element.offsetWidth and element.offsetHeight should do, as suggested in previous post. However, if you just want to center the content, there is a better way of doing so. Assuming you use xhtml strict DOCTYPE. set the margin:0,auto property and required width in px to the body tag.

  7. querySelectorAll Method - It select element on the basic of CSS selectors. Pass your CSS class to it with a dot and it will return all the element having specified class as an array-like object. function ReplaceContentInContainer(className, content) {. var containers = document.querySelectorAll(`.${className}`);

  8. So element becomes the last child of current node afterbegin - Prepends element to the beginning of current node. So element becomes first child of current node afterend - Inserts element AFTER current node. So element becomes the nextSibling of current node –

  9. Using the Node.contains DOM API, you can check for the presence of any element in the page (currently in the DOM) quite easily: document.body.contains(YOUR_ELEMENT_HERE); CROSS-BROWSER NOTE: the document object in Internet Explorer does not have a contains() method - to ensure cross-browser compatibility, use document.body.contains() instead.

  10. nodeName is the attribute you are looking for. For example: var elt = document.getElementById('foo'); console.log(elt.nodeName);

  11. elem.style.display = 'inline'; // show - use this for inline elements (span, a) or style.visibility will actually make the div still be there, but be "all empty" or "all white". elem.style.visibility = 'hidden'; // hide, but lets the element keep its size. elem.style.visibility = 'visible'; If you are using jQuery, you can do it even easier as ...