Sys.UI.DomEvent offsetY 字段

更新：2007 年 11 月

获取鼠标指针位置相对于引发事件的对象的 y 坐标。

var offsetY = domEventVar.offsetY;

返回值

一个表示 y 坐标的整数（以像素为单位）。

备注

使用 offsetY 字段可以获取鼠标位置和引发事件的对象顶部之间的垂直偏移量。

示例

下面的示例演示如何使用 offsetY 字段检索鼠标指针位置相对于引发事件的对象的 y 坐标。

<script type="text/javascript">
    Sys.UI.DomEvent.addHandler($get("Button1"), "click", processEventInfo);

    function processEventInfo(eventElement) {
        var result = '';
        try {
            result += "altKey = " + eventElement.altKey + "<br/>";
            result += "button = " + eventElement.button + "<br/>";
            result += "keyCode = " + eventElement.keyCode + "<br/>";
            result += "clientX = " + eventElement.clientX + "<br/>";
            result += "clientY = " + eventElement.clientY + "<br/>";
            result += "ctrlKey = " + eventElement.ctrlKey + "<br/>";
            result += "offsetX = " + eventElement.offsetX + "<br/>";
            result += "offsetY = " + eventElement.offsetY + "<br/>";
            result += "screenX = " + eventElement.screenX + "<br/>";
            result += "screenY = " + eventElement.screenY + "<br/>";
            result += "shiftKey = " + eventElement.shiftKey + "<br/>";
            result += "target.id = " + eventElement.target.id + "<br/>";
            result += "type = " + eventElement.type + "<br/>";
        }
        catch(e) {
            alert("Error:" + e.message);
        }
        $get('Label2').innerHTML = result;
    }
 </script>

<script type="text/javascript">
    Sys.UI.DomEvent.addHandler($get("Button1"), "click", processEventInfo);

    function processEventInfo(eventElement) {
        var result = '';
        try {
            result += "altKey = " + eventElement.altKey + "<br/>";
            result += "button = " + eventElement.button + "<br/>";
            result += "keyCode = " + eventElement.keyCode + "<br/>";
            result += "clientX = " + eventElement.clientX + "<br/>";
            result += "clientY = " + eventElement.clientY + "<br/>";
            result += "ctrlKey = " + eventElement.ctrlKey + "<br/>";
            result += "offsetX = " + eventElement.offsetX + "<br/>";
            result += "offsetY = " + eventElement.offsetY + "<br/>";
            result += "screenX = " + eventElement.screenX + "<br/>";
            result += "screenY = " + eventElement.screenY + "<br/>";
            result += "shiftKey = " + eventElement.shiftKey + "<br/>";
            result += "target.id = " + eventElement.target.id + "<br/>";
            result += "type = " + eventElement.type + "<br/>";
        }
        catch(e) {
            alert("Error:" + e.message);
        }
        $get('Label2').innerHTML = result;
    }
 </script>

请参见

参考

Sys.UI.DomEvent 类

Sys.UI.DomEvent offsetX 字段

其他资源

语言参考