Difference between revisions of "MediaWiki:Common.js"
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Revision as of 10:30, 28 January 2022
/* Any JavaScript here will be loaded for all users on every page load. */
// Make the TOC draggable:
dragElement(document.getElementById("lessons"));
dragElement(document.getElementById("terminal"));
function dragElement(elmnt) {
var pos1 = 0, pos2 = 0, pos3 = 0, pos4 = 0;
if (document.getElementById(elmnt.id + "header")) {
// if present, the header is where you move the DIV from:
document.getElementById(elmnt.id + "header").onmousedown = dragMouseDown;
} else {
// otherwise, move the DIV from anywhere inside the DIV:
elmnt.onmousedown = dragMouseDown;
}
function dragMouseDown(e) {
e = e || window.event;
e.preventDefault();
// get the mouse cursor position at startup:
pos3 = e.clientX;
pos4 = e.clientY;
document.onmouseup = closeDragElement;
// call a function whenever the cursor moves:
document.onmousemove = elementDrag;
}
function elementDrag(e) {
e = e || window.event;
e.preventDefault();
// calculate the new cursor position:
pos1 = pos3 - e.clientX;
pos2 = pos4 - e.clientY;
pos3 = e.clientX;
pos4 = e.clientY;
// set the element's new position:
elmnt.style.top = (elmnt.offsetTop - pos2) + "px";
elmnt.style.left = (elmnt.offsetLeft - pos1) + "px";
}
function closeDragElement() {
// stop moving when mouse button is released:
document.onmouseup = null;
document.onmousemove = null;
}
}
// TERMINAL ON FRONT PAGE
function HideTerminal() {
const terminal = document.querySelector('#terminal');
terminal.style.display = terminal.style.display === 'block' ? 'none' : 'block';
}
//TYPEWRITER
//terminalIntro
const typedTextSpan = document.querySelector(".typed-text");
const cursorSpan = document.querySelector(".cursor");
const textArray = ['programming', 'electronics', 'augmented & virtual reality', 'machine learning & AI'];
const typingDelay = 200;
const erasingDelay = 100;
const newTextDelay = 2000; // Delay between current and next text
let textArrayIndex = 0;
let charIndex = 0;
function type() {
if (charIndex < textArray[textArrayIndex].length) {
if(!cursorSpan.classList.contains("typing")) cursorSpan.classList.add("typing");
typedTextSpan.textContent += textArray[textArrayIndex].charAt(charIndex);
charIndex++;
setTimeout(type, typingDelay);
}
else {
cursorSpan.classList.remove("typing");
setTimeout(erase, newTextDelay);
}
}
function erase() {
if (charIndex > 0) {
if(!cursorSpan.classList.contains("typing")) cursorSpan.classList.add("typing");
typedTextSpan.textContent = textArray[textArrayIndex].substring(0, charIndex-1);
charIndex--;
setTimeout(erase, erasingDelay);
}
else {
cursorSpan.classList.remove("typing");
textArrayIndex++;
if(textArrayIndex>=textArray.length) textArrayIndex=0;
setTimeout(type, typingDelay + 1100);
}
}
document.addEventListener("DOMContentLoaded", function() { // On DOM Load initiate the effect
if(textArray.length) setTimeout(type, newTextDelay + 250);
});