试图获得鼠标单击x和y位置的准确值 - 获取NaN

Question

试图确定单击的x和y坐标的相对值以及父容器的偏移量以找到单击鼠标的真实值网页。

问题是：我在屏幕上显示NaN作为x和y？不知道为什么？

// get the position of click 
function getPosition(el) { 
  var xPosition = 0; 
  var yPosition = 0; 
  
  while (el) { 
    if (el.nodeName == "BODY") { 
      // deal with browser quirks with body/window/document and page scroll 
      var xScrollPos = el.scrollLeft || document.documentElement.scrollLeft; 
      var yScrollPos = el.scrollTop || document.documentElement.scrollTop; 
  
      xPosition += (el.offsetLeft - xScrollPos + el.clientLeft); 
      yPosition += (el.offsetTop - yScrollPos + el.clientTop); 
    } else { 
      xPosition += (el.offsetLeft - el.scrollLeft + el.clientLeft); 
      yPosition += (el.offsetTop - el.scrollTop + el.clientTop) 
    } 
  
    el = el.offsetParent; 
  } 
  return { 
    x: xPosition, 
    y: yPosition, 
    a: "hahah", 
  }; 
} 



function handleClick(event) { 
    // Return the current element clicked on 
    var el = event.currentTarget; 
    // Return the offset values of the element clicked on 
    var relOffsetValues = getPosition(el); 

    // Get the clicked values that is relative to the element 
    var valuesRelToClickedElementX = event.ClientX; 
    var valuesRelToClickedElementY = event.ClientY; 

    // Find the true value of x and y by adding the offset and the to clicked value of x and y 
    var realValueX = relOffsetValues.x + valuesRelToClickedElementX; 
    var realValueY = relOffsetValues.y + valuesRelToClickedElementY; 

    // display the x and y of the mouse click 
    alert("x:" + realValueX + ", y:" + realValueY); 
} 

// Set up event handlers according to standards 
window.addEventListener("load", function(){ 
    document.addEventListener("click", handleClick); 
}); 

Answer 1

两件事情需要加以纠正工作：

1. 让event.ClientX到event.clientX和event.ClientY至event.clientY。注意clientX和clientY中的小写字母。的
2. 代替document.addEventListener("click", handleClick);使用document.body. addEventListener("click", handleClick);

维诺德