Question

在这个小提琴中：How to Use QSettings，我正在尝试使用悬停选择器来显示工具提示但无法使其工作。

import math

class shape(object):
    """Shape is an base class, which is largely intended to be abstract, that
    is only used as a parent class to other classes wich define specific shapes
    and inherit the shape class' fuctions getArea() and printArea().
    """

    def __init__(self):
        '''constructor function for the shape class
        '''
        self.area = None
        self.name = "shape"

    def getArea(self):
        '''returns the area of the shape, which is defined in the constructor
        '''
        return self.area

    def printArea(self):
        '''prints a statement identifying the shape by its name and giving the
        area of the shape. Returns None.
        '''
        print "The area of this " + self.name + " is: " + str(self.area)
        return None

如何引用二级div，以便显示工具提示div？

Answer 1

组合子~和+仅适用于兄弟元素。

因此它无效，因为.ic-token不是具有该div元素的兄弟元素。由于您无法在CSS中选择父元素，因此目前无法实现。

最接近的是：

Updated Example

#typeahead-box:hover .ic-tokens + div #tooltip {
  display: block
}

Answer 2

.ic-tokens：nth-child（2）{}

这将获得ic-tokens类的第二个孩子。尽管如此，这是一种愚蠢的方式。如果我是你，我会用JS来做这件事。

如何使用悬停选择器来显示“叔叔”元素

2 个答案: