Check if mouse is inside div
simply you can use this:
var element = document.getElementById("myId");
if (element.parentNode.querySelector(":hover") == element) {
//Mouse is inside element
} else {
//Mouse is outside element
}
Improving using the comments
const element = document.getElementById("myId");
if (element.parentNode.matches(":hover")) {
//Mouse is inside element
} else {
//Mouse is outside element
}
you can register jQuery handlers:
var isOnDiv = false;
$(yourDiv).mouseenter(function(){isOnDiv=true;});
$(yourDiv).mouseleave(function(){isOnDiv=false;});
no jQuery alternative:
document.getElementById("element").addEventListener("mouseenter", function( ) {isOnDiv=true;});
document.getElementById("element").addEventListener("mouseout", function( ) {isOnDiv=false;});
and somewhereelse:
if ( isOnDiv===true ) {
// do something
} else {
return;
}
Well, that's kinda of what events are for. Simply attach an event listener to the div you want to monitor.
var div = document.getElementById('myDiv');
div.addEventListener('mouseenter', function(){
// stuff to do when the mouse enters this div
}, false);
If you want to do it using math, you still need to have an event on a parent element or something, to be able to get the mouse coordinates, which will then be stored in an event object, which is passed to the callback.
var body = document.getElementsByTagName('body');
var divRect = document.getElementById('myDiv').getBoundingClientRect();
body.addEventListener('mousemove', function(event){
if (event.clientX >= divRect.left && event.clientX <= divRect.right &&
event.clientY >= divRect.top && event.clientY <= divRect.bottom) {
// Mouse is inside element.
}
}, false);
But it's best to use the above method.