dropdown

问题 Is it possible to make nested dropdowns in materialize? second dropdown should be on right side <a class='dropdown-button btn' href='#' data-activates='dropdown1' data-beloworigin="true">Drop Me!</a> <ul id='dropdown1' class='dropdown-content'> <li><a class='dropdown-button d' href='#' data-activates='dropdown2' data-hover="hover" data-alignment="right">Drop Me!</a></li> <li><a href="#!">two</a></li> <li><a href="#!">three</a></li> </ul> <ul id='dropdown2' class='dropdown-content'> <li><a

问题 Is it possible to make nested dropdowns in materialize? second dropdown should be on right side <a class='dropdown-button btn' href='#' data-activates='dropdown1' data-beloworigin="true">Drop Me!</a> <ul id='dropdown1' class='dropdown-content'> <li><a class='dropdown-button d' href='#' data-activates='dropdown2' data-hover="hover" data-alignment="right">Drop Me!</a></li> <li><a href="#!">two</a></li> <li><a href="#!">three</a></li> </ul> <ul id='dropdown2' class='dropdown-content'> <li><a

问题 I have a dataframe pandas of which i want to make GUI to display the data , i have date_time one column which show data every one hour interval i want to make a dropdown option suppose if user select 1 hours then only the 1 hours all columns & rows show , if user select 2 hour then second all columns & rows display . Cany any one please help me how to display the data gving dropdown option. I will really Appreciate it. Thanks in Advance. SAMPLE DATA: Name: Longitude(degree) Latitude(degree)

问题 I' m gettings items from json and displaying them in a dropdown, when the person select an item from the dropdown list, i get the selection but the selected item doesn't change. For example wehave (tokyo, paris, new york) in the list. By default selection is tokyo. when the person select paris, i get it but the selection doesn't change in the dropdown. Here is my code: new DropdownButton( value: cities.elementAt(0), hint: new Text("Ville"), items: cities.map((String value) { return new

问题 how can I pick 'label' of 'Picker.Item' from an array. i have my picker code as follows: <View style={Styles.inputWrapper}> <Picker selectedValue={this.state.expiryYear} style={Styles.expYear} onValueChange={(itemValue, itemIndex) => this.setState({ expiryYear: itemValue })}> <Picker.Item label="select" value="0" /> <Picker.Item label="2018" value="2018" /> <Picker.Item label="2019" value="2019" /> <Picker.Item label="2020" value="2020" /> <Picker.Item label="2021" value="2021" /> . . .

问题 I am new in Flutter development and I'm trying to show the selected value of a dropdown but I can't get it to work. You can select one child and it works well but the dropdown doesn't show it as the chosen one, it just keeps like if nothing was selected. Here is my code: import 'package:app2date/repository/repository.dart'; import 'package:app2date/model/FeedSource.dart'; import 'package:app2date/model/FeedCategory.dart'; import 'package:app2date/util/ui.dart'; import 'package:flutter

问题 I have a dropdown in a Grid and I want to fill it in runtime. I tried it in a RowSelected event but it doesn't work. Then I tried it to assign the attribute PXStringList in the field definition on the DAC, but it doesn't work either. This is the event protected virtual void HIASetupDetail_RowSelected(PXCache sender, PXRowSelectedEventArgs e) { List<string> values = new List<string>(); values.AddRange(new string[] { "A", "B" }); if (e.Row == null) { return; } HIASetupDetail HIASetupDetailRow =

问题 I have a dropdown in a Grid and I want to fill it in runtime. I tried it in a RowSelected event but it doesn't work. Then I tried it to assign the attribute PXStringList in the field definition on the DAC, but it doesn't work either. This is the event protected virtual void HIASetupDetail_RowSelected(PXCache sender, PXRowSelectedEventArgs e) { List<string> values = new List<string>(); values.AddRange(new string[] { "A", "B" }); if (e.Row == null) { return; } HIASetupDetail HIASetupDetailRow =

问题 i'm searching for a dropdown menu like this: http://www.staples.it/ You can active it pressing on " Forniture per ufficio " or " informatica ". How can I push down a div with the dropdown, how I can block it? 回答1: You can create a block with relative position under the menu and height: 0; Then on Click event you just use function slideDown() and slideUp() Ex: $(".selector").slideDown(); UPDATE Here is the similar script for you https://jsfiddle.net/c2nuj88u/ 来源： https://stackoverflow.com

问题 So I came across this post regarding this similar question, https://stackoverflow.com/a/48078627 the answer was correct but it is in javascript, how can I transform it into the way how react will handle this piece of code. Below is the code in javascript <select id="sel" onchange="ChangeList()"> <option value="">select</option> <option value="I">Integer</option> <option value="A">Alphabet</option> </select> <select id="type"></select> <script> var IntandAlph = {}; IntandAlph['I'] = ['1', '2',