小编Ami*_*sia的帖子

我有下面的代码，我希望根据国家/地区选择填充第二个选择元素。因此，如果用户选择美国，它将填充第一个数组，例如阿拉斯加将是文本，AK 将是值，阿拉巴马州将是文本，AL 将是值等等......

<p>
    <select id="country" name ="country">
        <option value="select">Select country</option>
        <option value="US">United States</option>
        <option value="CA">Canada</option>
    </select>
</p>
<p>
    <select name ="state" id ="state">
        <option value="select">Select state/province</option>
    </select>
</p>
<script>
var us_states = {"AK":"Alaska", "AL":"Alabama", "AR":"Arkansas", "AS":"American Samoa", "AZ":"Arizona", "CA":"California", "CO":"Colorado", "CT":"Connecticut", "DC":"District of Columbia", "DE":"Delaware", "FL":"Florida", "FM":"Federated States of Micronesia", "GA":"Georgia", "GU":"Guam", "HI":"Hawaii", "IA":"Iowa", "ID":"Idaho", "IL":"Illinois", "IN":"Indiana", "KS":"Kansas", "KY":"Kentucky", "LA":"Louisiana", "MA":"Massachusetts", "MD":"Maryland", "ME":"Maine", "MH":"Marshall Islands", "MI":"Michigan", "MN":"Minnesota", "MO":"Missouri", "MP":"Northern Mariana Islands", "MS":"Mississippi", "MT":"Montana", "NC":"North Carolina", "ND":"North Dakota", "NE":"Nebraska", "NH":"New …

我有一个名为guiNext.py和next.py的PyQt5 Ui，正在刷新用户界面。如何向UI按钮添加功能？这就是我所拥有的，当我运行next.py并单击HELLO按钮时，什么也没有发生。

guiNext.py：

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'guiNext_001.ui'
#
# Created by: PyQt5 UI code generator 5.6
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_nextGui(object):
    def setupUi(self, nextGui):
        nextGui.setObjectName("nextGui")
        nextGui.resize(201, 111)
        nextGui.setMinimumSize(QtCore.QSize(201, 111))
        nextGui.setMaximumSize(QtCore.QSize(201, 111))
        self.centralwidget = QtWidgets.QWidget(nextGui)
        self.centralwidget.setObjectName("centralwidget")
        self.helloBtn = QtWidgets.QPushButton(self.centralwidget)
        self.helloBtn.setGeometry(QtCore.QRect(10, 10, 181, 91))
        self.helloBtn.setObjectName("helloBtn")
        nextGui.setCentralWidget(self.centralwidget)

        self.retranslateUi(nextGui)
        QtCore.QMetaObject.connectSlotsByName(nextGui)

    def retranslateUi(self, nextGui):
        _translate = QtCore.QCoreApplication.translate
        nextGui.setWindowTitle(_translate("nextGui", "MainWindow"))
        self.helloBtn.setText(_translate("nextGui", …