button

问题 I am trying to toggle the color of a raised button. Initially the button should be blue and when it is pressed it turns to grey. Right now I have a bool value called pressAttention and it is set to false. I am using this to initially set this the false. When the button is pressed it toggles the pressAttention bool, but it seems that the widget is never updated again. new RaisedButton( child: new Text("Attention"), textColor: Colors.white, shape: new RoundedRectangleBorder(borderRadius: new

问题 So I want to make a small website with a menu that has four HTML buttons. Instead of the buttons opening a completely new website I just want an iframe tag to change the URL it's displaying according to the buttons that are pressed. Please keep it simple, I am a beginner in HTML, JS and CSS. Thanks! 回答1: You just need to get the iframe element with Javascript and change the src attribute The question has already been answered here : https://stackoverflow.com/a/6001043/7988438 var frame =

问题 I'm trying to make a flat button with a red border instead of a black border when the button is pressed. <Style TargetType="Button" x:Key="FlatButtonStyle"> <Setter Property="Background" Value="Transparent" /> <Setter Property="BorderBrush" Value="Transparent" /> <Setter Property="Margin" Value="2" /> <Setter Property="FontSize" Value="30" /> <Style.Triggers> <Trigger Property="IsFocused" Value="true"> <Setter Property="BorderBrush" Value="#E01919"/> </Trigger> </Style.Triggers> </Style> The

问题 I have a bootstrap grid where each grid item is populated from an array of objects but after each grid item I would like to have a vote button. How could I achieve this with maintaining state on each button separately, ie when button 1 is clicked the text should change from 'vote' to 'voted' whilst the others remain as 'vote'. At the moment when a button is clicked, all of them change to 'Voted' class Items extends Component { constructor(props) { super(props); this.state = { hasVoted: false

问题 I was wondering if there was a way to change a button's style, in css, after it's been clicked, so not a element:active . Thanks! 回答1: If you're looking for a pure css option, try using the :focus pseudo class. #style { background-color: red; } #style:focus { background-color:yellow; } 回答2: Each link has five different states: link , hover , active , focus and visited . Link is the normal appearance, hover is when you mouse over, active is the state when it's clicked, focus follows active and

问题 SwiftUI Custom Button in List I'm trying to create a custom button in a SwiftUI List. I want it to have a blue background with white text, and importantly, to remain blue and go to 50% opacity when pressed, not the default grey. I tried using a custom ButtonStyle, but when I do so, the tappable area of the button is reduced to just the label itself. If I tap any other part of the cell, the colour doesn't change. If I remove the ButtonStyle, tapping anywhere on the cell works How can I fix

问题 I have an app in visual basic that displays a message box with a text range from A - F upon user integer input in a textbox. I have a button control on the form that triggers the event, but the user has to press the button every time to get a result, that's cool, but what if I wanted the event triggered by say the B key on my keyboard? I know of a way of assigning the AcceptButton property to my button in visual studio 2012 which accepts just the Enter key alone. I want the same effect as

问题 I am making a program in C with GTK and Glade for a serial communication. I am having problem using g_timeout_add. For example I have a function serial_data() which contain my serial data and I have a button handler on_update_button_clicked() . So till now I have done that if update button is clicked, gtk_timeout should run. But it running just for one time. on_update_button_clicked(GtkButton *Update_Button) { //2nd argument is serial_data function which contain actual data g_timeout_add(250

问题 I have two questions: I want to display 6 buttons around an image on mouseover event of the image on specific positions. Is it possible? Is it possible to write an onclick event for those buttons? I don't have any experience in web designing. I used the below code Javascript: function showIt(imgsrc) { document.getElementById('imageshow').src=imgsrc; document.getElementById('imageshow').style.display=''; } function hideIt() { document.getElementById('imageshow').style.display='none'; } HTML:

问题 I found this answer on the website. I was trying to get the buttons to render within the table but it just came up as text. Here's the code: function tableCreate() { var body = document.getElementsByTagName("body")[0]; var tbl = document.createElement("table"); var tblBody = document.createElement("tbody"); for (var j = 0; j <= 10; j++) { var row = document.createElement("tr"); for (var i = 0; i <10; i++) { var cell = document.createElement("td"); var btn = "<button>" + j +"-"+i+"</button>"