MediaWiki:Common.js

/* 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 

var typeString = ['programming;', 'electronics;', 'augmented and virtual reality;', 'real-time 3d;', 'machine learning and AI;'];
      var  i = 0;
      var count = 0
      var selectedText = '';
      var text = '';
      (function type() {
        if (count == typeString.length) {
          count = 0;
        }
        selectedText = typeString[count];
        text = selectedText.slice(0, ++i);
        document.getElementById('terminalTyping').innerHTML = text;
        if (text.length === selectedText.length) {
          count++;
          i = 0;
        }
        setTimeout(type, 180);
      }());

      function sleep(milliseconds) {
        var start = new Date().getTime();
        for (var i = 0; i < 1e7; i++) {
          if ((new Date().getTime() - start) > milliseconds){
            break;
          }
        }
      }