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Frozen Text | Ice Text Effect Using CSS - Pure CSS Tutorial **
**
https://www.youtube.com/watch?v=CwauVEPCXAY
1650870267
In the previous chapters you've learnt how to select individual elements on a web page. But there are many occasions where you need to access a child, parent or ancestor element. See the JavaScript DOM nodes chapter to understand the logical relationships between the nodes in a DOM tree.
DOM node provides several properties and methods that allow you to navigate or traverse through the tree structure of the DOM and make changes very easily. In the following section we will learn how to navigate up, down, and sideways in the DOM tree using JavaScript.
You can use the firstChild
and lastChild
properties of the DOM node to access the first and last direct child node of a node, respectively. If the node doesn't have any child element, it returns null
.
<div id="main">
<h1 id="title">My Heading</h1>
<p id="hint"><span>This is some text.</span></p>
</div>
<script>
var main = document.getElementById("main");
console.log(main.firstChild.nodeName); // Prints: #text
var hint = document.getElementById("hint");
console.log(hint.firstChild.nodeName); // Prints: SPAN
</script>
Note: The
nodeName
is a read-only property that returns the name of the current node as a string. For example, it returns the tag name for element node,#text
for text node,#comment
for comment node,#document
for document node, and so on.
If you notice the above example, the nodeName
of the first-child node of the main DIV element returns #text instead of H1. Because, whitespace such as spaces, tabs, newlines, etc. are valid characters and they form #text nodes and become a part of the DOM tree. Therefore, since the <div>
tag contains a newline before the <h1>
tag, so it will create a #text node.
To avoid the issue with firstChild
and lastChild
returning #text or #comment nodes, you could alternatively use the firstElementChild
and lastElementChild
properties to return only the first and last element node, respectively. But, it will not work in IE 9 and earlier.
<div id="main">
<h1 id="title">My Heading</h1>
<p id="hint"><span>This is some text.</span></p>
</div>
<script>
var main = document.getElementById("main");
alert(main.firstElementChild.nodeName); // Outputs: H1
main.firstElementChild.style.color = "red";
var hint = document.getElementById("hint");
alert(hint.firstElementChild.nodeName); // Outputs: SPAN
hint.firstElementChild.style.color = "blue";
</script>
Similarly, you can use the childNodes
property to access all child nodes of a given element, where the first child node is assigned index 0. Here's an example:
<div id="main">
<h1 id="title">My Heading</h1>
<p id="hint"><span>This is some text.</span></p>
</div>
<script>
var main = document.getElementById("main");
// First check that the element has child nodes
if(main.hasChildNodes()) {
var nodes = main.childNodes;
// Loop through node list and display node name
for(var i = 0; i < nodes.length; i++) {
alert(nodes[i].nodeName);
}
}
</script>
The childNodes
returns all child nodes, including non-element nodes like text and comment nodes. To get a collection of only elements, use children
property instead.
<div id="main">
<h1 id="title">My Heading</h1>
<p id="hint"><span>This is some text.</span></p>
</div>
<script>
var main = document.getElementById("main");
// First check that the element has child nodes
if(main.hasChildNodes()) {
var nodes = main.children;
// Loop through node list and display node name
for(var i = 0; i < nodes.length; i++) {
alert(nodes[i].nodeName);
}
}
</script>
1618667723
how to create a Sidebar Menu using HTML and CSS only. Previously I have shared a Responsive Navigation Menu Bar using HTML & CSS only, now it’s time to create a Side Navigation Menu Bar that slides from the left or right side.
#sidebar menu using html css #side navigation menu html css #css side navigation menu bar #,pure css sidebar menu #side menu bar html css #side menu bar using html css
1626922800
Hello! For my last video of 2020, we are learning how to handle themes with CSS Variables, with a cool theme switcher from twitter. Enjoy!
Useful Links:
GitHub: https://github.com/redhwannacef/youtube/tree/master/theme-switcher
#css variables #css #tutorial #css variables - tutorial #css theme switcher
1619706360
#css #tutorial #flexbox #css tutorial
1626964260
Hi guys in this video we will creating this cool animated card with html and css. Please if like this video please give it thumbs up and also if you have not subscribe to my channel please try and subscribe.
#css #card #card effect #html #css tutorial #html tutorial