expect($("#message_div").css("display")).toBe("none");

您可以使用隐藏选择器:

// Matches all elements that are hidden
$('element:hidden')

可见选择器 :

// Matches all elements that are visible
$('element:visible')

元素能见度和支流如何运作;

可用下列显示方式隐藏元素: 无、 可见度: 隐藏或不透明: 0。 这些方法之间的差异 :

显示: 没有隐藏元素, 它不占用任何空间; 可见性: 隐藏元素, 但是它仍然在布局中占据空间; 透明性: 0 将元素隐藏为“ 可见性: 隐藏 ” , 它仍然在布局中占据空间; 唯一不同之处在于不透明让元素部分透明; 如果 $ ('. target') , 是 (': hidden' ) {( $ ('. target'. show (); ) 其它 { ($ ('. target'. hide ()); } 如果 ($ ('. target') ) { $ ('. target'). hide (); 其它 { ( $ (' 目标) 。

expect($("#message_div").css("display")).toBe("none");

content.style.display != 'none'

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您也可以使用普通的笔记本进行此项操作 :

function isRendered(domObj) {
    if ((domObj.nodeType != 1) || (domObj == document.body)) {
        return true;
    }
    if (domObj.currentStyle && domObj.currentStyle["display"] != "none" && domObj.currentStyle["visibility"] != "hidden") {
        return isRendered(domObj.parentNode);
    } else if (window.getComputedStyle) {
        var cs = document.defaultView.getComputedStyle(domObj, null);
        if (cs.getPropertyValue("display") != "none" && cs.getPropertyValue("visibility") != "hidden") {
            return isRendered(domObj.parentNode);
        }
    }
    return false;
}

注:

各地工作 , 嵌套元素为 css 工作, 内嵌样式不需要框架 。