基于@Patrick Boos的解决方案，但修复了中间滚动条的潜在问题。

export function getRelativeCoordinates(event: MouseEvent, referenceElement: HTMLElement) {
  const position = {
    x: event.pageX,
    y: event.pageY,
  };

  const offset = {
    left: referenceElement.offsetLeft,
    top: referenceElement.offsetTop,
  };

  let reference = referenceElement.offsetParent as HTMLElement;

  while (reference) {
    offset.left += reference.offsetLeft;
    offset.top += reference.offsetTop;
    reference = reference.offsetParent as HTMLElement;
  }

  const scrolls = {
    left: 0,
    top: 0,
  };

  reference = event.target as HTMLElement;
  while (reference) {
    scrolls.left += reference.scrollLeft;
    scrolls.top += reference.scrollTop;
    reference = reference.parentElement as HTMLElement;
  }

  return {
    x: position.x + scrolls.left - offset.left,
    y: position.y + scrolls.top - offset.top,
  };
}

您可以简单地使用jQuery的事件。pageX和事件。使用jQuery的offset()方法获取鼠标相对于元素的位置。

  $(document).ready(function() {
    $("#myDiv").mousemove(function(event){            
      var X = event.pageX - $(this).offset().left;
      var Y = event.pageY - $(this).offset().top;
      $(".cordn").text("(" + X + "," + Y + ")");
    });
  });

你可以在这里看到一个例子:如何找到相对于元素的鼠标位置

基于@Patrick Boos的解决方案，但修复了中间滚动条的潜在问题。

export function getRelativeCoordinates(event: MouseEvent, referenceElement: HTMLElement) {
  const position = {
    x: event.pageX,
    y: event.pageY,
  };

  const offset = {
    left: referenceElement.offsetLeft,
    top: referenceElement.offsetTop,
  };

  let reference = referenceElement.offsetParent as HTMLElement;

  while (reference) {
    offset.left += reference.offsetLeft;
    offset.top += reference.offsetTop;
    reference = reference.offsetParent as HTMLElement;
  }

  const scrolls = {
    left: 0,
    top: 0,
  };

  reference = event.target as HTMLElement;
  while (reference) {
    scrolls.left += reference.scrollLeft;
    scrolls.top += reference.scrollTop;
    reference = reference.parentElement as HTMLElement;
  }

  return {
    x: position.x + scrolls.left - offset.left,
    y: position.y + scrolls.top - offset.top,
  };
}

下面计算鼠标位置与canvas元素的关系:

const example = document.getElementById('example');

example.onmousemove = function(e) { 
    const x = e.pageX - e.currentTarget.offsetLeft; 
    const y = e.pageY - e.currentTarget.offsetTop; 
}

使用此方法快速获取鼠标位置:

Object.defineProperty(MouseEvent.prototype, "mouseX", {
   get() {
      return this.clientX - this.currentTarget.getBoundingClientRect().left;
   }
});
Object.defineProperty(MouseEvent.prototype, "mouseY", {
   get() {
      return this.clientY - this.currentTarget.getBoundingClientRect().top;
   }
});

例子:

document.body.onmousemove=function(e){console.log(e.mouseX,e.mouseY)}

function myFunction(e) {
    var x =  e.clientX - e.currentTarget.offsetLeft ; 
    var y = e.clientY - e.currentTarget.offsetTop ;
}

这可以正常工作!