Javascript 设置窗口弹出窗口坐标

我像这样使用jQueryUI对话框

 $(function () {
        var dlg = $("#dialog").dialog({
            draggable: true,
            resizable: false,
            width: 950,
            height: 480,
            autoOpen: false,
            modal: true,
            minHeight: 30,
            minwidth: 30,
            title: 'test'
        });
    });

窗口：

    function PopupUrl(url, name, width, height) {
        var features = "location=1, status=1, scrollbars=1, width=" + width + ", height=" + height + '"';
        window.open(url, name, features);
    }

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对话框被打开页面的中心，但弹出窗口显示不同的坐标。我想谈谈。如何做到这一点？

只需在功能列表中添加一个计算出的顶部和左侧，弹出窗口将位于屏幕中央：

function PopupUrl(url, name, width, height) {
    var top = parseInt((screen.availHeight / 2) - (height / 2));
    var left = parseInt((screen.availWidth / 2) - (width / 2));
    var features = "location=1, status=1, scrollbars=1, width=" + width + ", height=" + height + ", top=" + top + ", left=" + left;
    window.open(url, name, features);
}