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Tue Jul 06 2021 14:49:45 GMT+0000 (Coordinated Universal Time)

Saved by @hisam #css #accessibility #html

.sr-only {
position:absolute;
left:-10000px;
top:auto;
width:1px;
height:1px;
overflow:hidden;
}

<div class="sr-only">This text is hidden.</div>

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How to Save HTML Form Data in JSON - Express

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A Modern CSS Reset - Piccalilli

/* Box sizing rules */
*,
*::before,
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/* Remove default margin */
body,
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h2,
h3,
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#html #javascript #jsfunctions #dom #dommanipulation

getAttribute() - how to get the value of any attribute of HTML element

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<script>

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#html #jquery #css #navbar

Underline active navbar link

// in css:
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.active {
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//in html: 
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Firefox CSS backdrop-filter workaround

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How to Create a Table in HTML

<table>
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      <ul>
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#javascript #eventos #mouse #css #html

mover un elemento junto al mouse, dentro de un div (eventos de mouse)

let hijo = document.querySelector('.hijo');
let etiqueta = document.querySelectorAll('.etiqueta');
//El metodo .getBoundingClientRect() nos da 
//la posicion de un elemento con respecto al viewport(en numeros).
// tomare la posicion constante del elemento .hijo 
const coords = hijo.getBoundingClientRect();
const j = coords.top; // estamos obteniendo la posicion top en numero
const k = coords.left;

// se aplica forEach para obtener posicion de cada movimiento del mouse
etiqueta.forEach(link => {
// se obtiene la posicion del mouse con la funcion  mover(e)
    function mover(e){
// se calcula la posicion top y left del mouse al cual le restamos
// la posicion del elemento "hijo"; resultado: mouse e "hijo" juntos 
	 let m = e.pageY ;
	 let n = e.pageX ;

	 let t = m - j;
	 let l = n - k;
	 hijo.style.top = t + "px"; // agregando px a los numeros
	 hijo.style.left = l + "px";
    };
// mouseover dice que entro en elemento etiqueta
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	 window.addEventListener("mousemove",mover);// agrega el evento junto a la funcion 
    });

    link.addEventListener("mouseleave",() => {// mouseleave dice que salio del elemento etiqueta
	hijo.classList.remove("edd1"); // le quita un class, que le quita color red
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    });
});

/* Simples estilos para delimitar los div*/
.box{
width: 300px;
height: 300px;
border: solid 1px black;
}
.etiqueta{
width:100px;
height:100px;
position: absolute;
left:50px;
top:50px;
background: green;
overflow: hidden;
position:relative;
}
.hijo{
position: absolute;
width: 20px;
height: 20px;
border-radius: 50%;
background-color: blue;
transform: scale(0); /*desaparece el elemento hijo*/
}
.edd1{
background-color: red;
transform: scale(1); /*reaparece el elemento hijo con el mause al centro*/
} 

// un ejemplo con html
<div class="box">
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  <div class="hijo"></div>
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</div>

Header JavaScript

const header = document.querySelector('header');
let lastScroll = 0;
const scrollThreshold = 10; 

window.addEventListener('scroll', () => {
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    if (currentScroll > lastScroll && currentScroll > scrollThreshold) {
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const navmenu = document.querySelector(".nav-menu");

hamburger.addEventListener("click", () => {
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});

document.querySelectorAll(".nav-link").forEach(n => n.addEventListener("click", () => {
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