javascript 获取鼠标的绝对位置 event

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <html> <head> <title> New Document </title> <meta name="Generator" content="EditPlus"> <meta name="Author" content=""> <meta name="Keywords" content=""> <meta name="Description" content=""> </head> <body onmouseMove="getXY(event)"> <script language="JavaScript"> <!-- function mouseX(evt) { if (evt.pageX) return evt.pageX; else if (evt.clientX) return evt.clientX + (document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft); else return null; } function mouseY(evt) { if (evt.pageY) return evt.pageY; else if (evt.clientY) return evt.clientY + (document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop); else return null; } function getXY(event) { var e = event || window.event; var x = mouseX(e); var y = mouseY(e); document.getElementById("XY").innerHTML = "X:" + x + "<br>Y:" + y; } function getX(elementID) { var el = elementID return el.offsetLeft } function getY(elementID) { var el = elementID return el.offsetTop } function getElementPositionX(elemID) { var offsetTrail = document.getElementById(elemID); var offsetLeft = 0; while(offsetTrail) { offsetLeft += offsetTrail.offsetLeft; offsetTrail = offsetTrail.offsetParent; } if (navigator.userAgent.indexOf("Mac") != -1 && typeof(document.body.leftMargin) != "undefined") { offsetLeft += document.body.leftMargin; } return offsetLeft; } function getElementPositionY(elemID) { var offsetTrail = document.getElementById(elemID); var offsetTop = 0; while(offsetTrail) { offsetTop += offsetTrail.offsetTop; offsetTrail = offsetTrail.offsetParent; } if (navigator.userAgent.indexOf("Mac") != -1 && typeof(document.body.leftMargin) != "undefined") { offsetTop += document.body.topMargin; } return offsetTop; } function getElementPositionXY(elemID) { var offsetTrail = elemID; var offsetLeft = 24; var offsetTop =0; while(offsetTrail) { offsetLeft += offsetTrail.offsetLeft; offsetTop += offsetTrail.offsetTop; offsetTrail = offsetTrail.offsetParent; } if (navigator.userAgent.indexOf("Mac") != -1 && typeof(document.body.leftMargin) != "undefined") { offsetLeft += document.body.leftMargin; offsetLeft += document.body.leftMargin; } document.getElementById("txt_left").innerText = offsetLeft; document.getElementById("txt_top").innerText = offsetTop; document.getElementById("divMsg").style.top = offsetTop + "px"; } //--> </script> 鼠标的绝对位置：<br> <span id="XY" style="color:red;"></span><br><br> 控件输入框txtPos的绝对位置：<br> X：<span id="txt_left" style="color:red;"></span><br> Y：<span id="txt_top" style="color:red;"></span><br> <input type="text" name="txtPos" id="txtPos" onfocus="getElementPositionXY(this)"/> <br><br> </body> </html>
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