使用 JavaScript 将弹出窗口居中

Question

I am using the following JavaScript to open a popup window, which does work, however it is not centered, just wondered if someone can help?

var win = Runner.displayPopup( {
    url: "Wizard_ExternalFactors_add.php",
    width: 1400,
    height: 900,
    header: 'External Factors Wizard'
});

Answer 1

Something like this should work:

top:50%;
left:50%;
margin-top:-450px;
margin-left:-700px;