jQuery get mouse position within an element

Question

I was hoping to craft a control where a user could click inside a div, then drag the mouse, then let up on the mouse in order to indicate how long they want something to be.

Answer 1

Here is one that also gives you percent position of the point in case you need it. https://jsfiddle.net/Themezly/2etbhw01/

function ThzhotspotPosition(evt, el, hotspotsize, percent) {
  var left = el.offset().left;
  var top = el.offset().top;
  var hotspot = hotspotsize ? hotspotsize : 0;
  if (percent) {
    x = (evt.pageX - left - (hotspot / 2)) / el.outerWidth() * 100 + '%';
    y = (evt.pageY - top - (hotspot / 2)) / el.outerHeight() * 100 + '%';
  } else {
    x = (evt.pageX - left - (hotspot / 2));
    y = (evt.pageY - top - (hotspot / 2));
  }

  return {
    x: x,
    y: y
  };
}



$(function() {

  $('.box').click(function(e) {

    var hp = ThzhotspotPosition(e, $(this), 20, true); // true = percent | false or no attr = px

    var hotspot = $('
').css({
      left: hp.x,
      top: hp.y,
    });
    $(this).append(hotspot);
    $("span").text("X: " + hp.x + ", Y: " + hp.y);
  });


});

.box {
  width: 400px;
  height: 400px;
  background: #efefef;
  margin: 20px;
  padding: 20px;
  position: relative;
  top: 20px;
  left: 20px;
}

.hotspot {
  position: absolute;
  left: 0;
  top: 0;
  height: 20px;
  width: 20px;
  background: green;
  border-radius: 20px;
}

  
Hotspot position is at: