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HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <!-- each object needs a unique ID although this could be removed for the className check -->
<p>This script dynamic draws SVG lines between DOM objects and updates after window resizing. <span class="btn">Randomize points</span></p>
<div id="one" class="point"></div>
<div id="two" class="point"></div>
<div id="three" class="point"></div>
<div id="four" class="point"></div>

<svg id="svg">
  <line id="line" class="line original" stroke-dasharray="5, 5"/>

              html, body{
  margin: 0;
  padding: 0;

    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;



  width: 15px;
  height: 15px;
  background: #d54501;
  position: absolute;
  z-index: 10;  

body {
  font-family: 'Niramit', sans-serif;
  background-color: #b2ada3;

p {
  margin-left: 20px;
  position: relative;
  z-index: 11;
  background: rgba(178, 173, 163, .55)
  top: 80px;
  left: 50px;

  top: 290px;
  right: 50px;
#three {
  top: 390px;
  right: 150px;
#four {
  top: 590px;
  left: 20px;
.btn {
  display: inline-block;
  background: #4e7c80;
  color: white;
  padding: 10px 15px;
  margin-left: 5px;
  cursor: pointer;
  position: relative;
  z-index: 11;
  line-height: 1em;
  &:hover {
    background: darken(#4e7c80, 10%);
              const config = {
  target: $(".point"),
  line: $(".line"),
  delay: 40 // enter zero for live resizing
const drawBetweenObjects = {
  //cmake the line
  makeLine: function(line, div1, div2) {
    var className = div1.attr('id') + div2.attr('id');
    if ( className.includes("undefined") !== true ) { //error check
      //calculations (for legibility, these are separte vars)
      var x1 = div1.offset().left + (div1.width()/2);
      var y1 = div1.offset().top + (div1.height()/2);
      var x2 = div2.offset().left + (div2.width()/2);
      var y2 = div2.offset().top + (div2.height()/2);
      $("."+className).attr('x1',x1).attr('y1',y1).attr('x2',x2).attr('y2',y2); //svg attributes
    } else { console.error("undefined object") }
  findLines: function(search) {
   $(".deleteMe").remove(); //remove last set of lines
    $(search).each(function(index, el){
      if ( search.eq(index + 1).length ) { //only do drawBetweenObject if there is another.
        drawBetweenObjects.makeLine(config.line, $(this), search.eq(index + 1));   //args order - line, div1 and div2 - the next div.
  init: function() {
    drawBetweenObjects.findLines( config.target );
    //give resizing time to happen
    var resizeId;
    $(window).resize(function() {
        if (config.delay !== 0) {
          resizeId = setTimeout(doneResizing, config.delay);
        } else {
          drawBetweenObjects.findLines( config.target );
    function doneResizing(){
      drawBetweenObjects.findLines( config.target );


// umimportant ugly scripting
// this just randomizes the points
// It's pretty ugly.
$(".btn").click(function() {
  var heightMax = $(document).height(),
      widthMax = $(document).width();
  function widthCalc () {
    return Math.floor( Math.random() * widthMax );
  function heightCalc() {
    return Math.floor( Math.random() * heightMax )
  $("#one").css({  left: widthCalc(),  top: heightCalc() });
  $("#four").css({ left: widthCalc(),  top: heightCalc() });
  $("#three").css({ right: widthCalc(), top: heightCalc() });
  $("#two").css({ right: widthCalc(), top: heightCalc()  });
   drawBetweenObjects.findLines( config.target );
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