CSSOM视图模式clientX/clientY属性实例页面

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代码:

HTML代码:
<button id="button1">点击弹出鼠标的clientX和clientY</button>
                
JS代码:
document.getElementById("button1").onclick = function(e) {
    var event = e || window.event;
	alert("clientX: " + event.clientX + ", \r\nclientY: " + event.clientY);
};
                

效果: