I need get hover effect in a div from the cursor position.

I have this html and css

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
}

.s {
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
  margin: 75px 0px 0px 75px;
  transition: width 1s, height 1s, margin 1s;
}

.s:hover {
  width: 100px;
  height: 100px;
  background-color: black;
  margin: 50px 0px 0px 50px;
}

<div class="f">
  <div class="s"></div>
</div>

I need get hover effect in a div from the cursor position.

I have this html and css

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
}

.s {
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
  margin: 75px 0px 0px 75px;
  transition: width 1s, height 1s, margin 1s;
}

.s:hover {
  width: 100px;
  height: 100px;
  background-color: black;
  margin: 50px 0px 0px 50px;
}

<div class="f">
  <div class="s"></div>
</div>

And I need something like this:

I'm open to js or jquery solutions.

EDIT

I have a jquery solution:

$("div.f").mousemove(function(e) {
  $('div.s').css({
    left: e.clientX - 28,
    top: e.clientY - 24
  });
});

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
  /* ment or remove the overflow if necessary */
  overflow: hidden;
}

.s {
  position: absolute;
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
}

<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="f">
  <div class="s"></div>
</div>

But i need the circle make the over animation like first snippet.

Original question here

• javascript
• jquery
• html
• css

• Are you trying to position the black circle so that it "follows" the cursor? – haxxxton Commented Mar 7, 2017 at 9:43
• Not exactly, i trying when im enter in div the hover effects apear in cursor position – user7611919 Commented Mar 7, 2017 at 9:45
• 1 You're likely going to need to do this with javascript, as the hover event in CSS can only apply static styling. – haxxxton Commented Mar 7, 2017 at 9:49
• 1 Here is something similar. This method is done with hitboxes and only css, adding many divs to detect where the cursor is. A better way is to use javascript, here's one example – pol Commented Mar 7, 2017 at 9:51
• 2 If you are open for js solutions you should tag your question with js – Nenad Vracar Commented Mar 7, 2017 at 9:52

5 Answers 5

To change position of inner circle you can use pageX and pageY on mousemove. To change size of inner circle you can create one class that will scale div and toggle that class on hover over .f.

var s = $('.s')
var f = $('.f')
var oTop = f.offset().top + (s.height() / 2);
var oLeft = f.offset().left + (s.width() / 2);

f.hover(function() {
  s.toggleClass('change')
})

f.mousemove(function(e) {
  var x = e.pageY - oTop
  var y = e.pageX - oLeft

  s.css({
    top: x + 'px',
    left: y + 'px'
  })
})

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  overflow: hidden;
  border-radius: 100px;
}
.s {
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
  position: absolute;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.5s linear, opacity 0.3s linear;
}
.change {
  transform: scale(2);
  opacity: 1;
}

<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="f">
  <div class="s"></div>
</div>

Here is a jQuery solution.

$("div.f").mousemove(function(e) {
  $('div.s').css({
    left: e.clientX - 28,
    top: e.clientY - 24
  });
});

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
  /* ment or remove the overflow if necessary */
  overflow: hidden;
}

.s {
  position: absolute;
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
}

<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="f">
  <div class="s"></div>
</div>

$('.f').on('mousemove', function(e){
var par = $(this);
  if((e.pageX <= par.width() && e.pageX >= 0) && e.pageY <= par.height() && e.pageY >= 0){
    $('.s').css({
       position: 'relative',
       left:  e.pageX - (par.width() / 2),
       top:   e.pageY - (par.height() / 2)
    });
    } else {
    $('.s').css({
      position: 'initial'
    });
    }
});

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
}

.s {
  width: 50px;
  height: 50px;
  background-color: black;
  border-radius: 100px;
  margin: 75px 0px 0px 75px;
  transition: width 1s, height 1s, margin 1s;
}

.s:hover {
  width: 100px;
  height: 100px;
  background-color: black;
  margin: 50px 0px 0px 50px;
}

<script src="https://ajax.googleapis./ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="f">
  <div class="s"></div>
</div>

function moveInner(e)
{
  var inner = document.getElementById('inner');
 
  inner.style.top = (e.clientY-100)+"px";
  inner.style.left= (e.clientX-100)+"px";
}

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
}

.s {
  width: 100px;
  height: 100px;
  background-color: black;
  border-radius: 100px;
  margin: 75px 0px 0px 75px;

  position: absolute;
}


Please put the inner div outside the parent div
And set the onmouseover for parent div to change inner div's position

<div class="f" id="parent" onmousemove="moveInner(event)">
  
</div><div class="s" id="inner"></div>

var ol_x= null;
var ol_y= null;
function moveInner(me, e)
{
if(ol_x!=null)
{
var ctx = me.getContext("2d");
 ctx.arc(ol_x, ol_y, 42, 0, 2 * Math.PI, false);
 ctx.fillStyle='grey';
    ctx.fill();
    ctx.restore();
}
ol_x = e.clientX+20;
ol_y = e.clientY+20;
  var ctx = me.getContext("2d");
ctx.beginPath();
ctx.arc(ol_x, ol_y, 40, 0, 2*Math.PI, false);
ctx.fillStyle ='black';
ctx.fill();
ctx.stroke();

}

.f {
  width: 200px;
  height: 200px;
  background-color: grey;
  position: fixed;
  border-radius: 100px;
}

Hi this is my solution for EDIT<BR>
I use 2D context to draw inner DIV inside parent DIV

<canvas class="f" id="parent" onmousemove="moveInner(this, event)">
  
</canvas>