textfield

问题 Hi, I want to create a Login Screen which has a Username and Password and a Sign in Button But when a user fails to enter correct information inside the TextField of Username or Password a pop up like the image chat dialog should pop up from corner of TextField's right side displaying appropriate message How can this Customization be achieved? 回答1: i am giving you a simple way. If it is not perfect to your question you just ignore this answer. Here i made logic like following. i gave you two

问题 I'm trying to combine radio buttons and text_field for a single value : = f.radio_button :system, "bacteria" Bacteria = f.radio_button :system, "mammalian" Mammalian = f.radio_button :system, "yeast" Yeast = f.radio_button :system, "insect" Insect = f.radio_button :system, "other" Other: = f.text_field :system, class:"input-small" When I submit, nothing happens because a blank value is given in params even if a radio is checked (I think it considers the text field). I tried to give another

问题 I've tried #Default size for text inputs. config.default_input_size = 10 from config/initializers/simple_form.rb I've also tried <%= f.input :message, :input_html => {:size => 10} %> But neither of these change a single thing about how my text fields appear. 回答1: You need to do this <%= f.input :message, :input_html => {:rows => 10} %> Html text area tag attributes has two attributes namely rows and cols which lets you specify the no of rows and columns(i.e. width) of your text area. If this

问题 Hi I want to get rid of the blue "shine" that appears when you click on a text field and begin to input data. How is this done? I am a beginner so I am not that experienced. My code is: <input type="text" name="search" size="40" value="Job Title e.g. Assistant Manager" style="background-color:white; border: solid 1px #6E6E6E; height: 31px; font-size:16px; vertical-align:0px;color:#bbb" onfocus="if(this.value == 'Job Title e.g. Assistant Manager'){this.value = '';this.style.color='#000'}" />

问题 Hi I want to get rid of the blue "shine" that appears when you click on a text field and begin to input data. How is this done? I am a beginner so I am not that experienced. My code is: <input type="text" name="search" size="40" value="Job Title e.g. Assistant Manager" style="background-color:white; border: solid 1px #6E6E6E; height: 31px; font-size:16px; vertical-align:0px;color:#bbb" onfocus="if(this.value == 'Job Title e.g. Assistant Manager'){this.value = '';this.style.color='#000'}" />

问题 Stupid Flutter newbie question here... I have a Flutter TextField which gets covered by the soft keyboard when the field is selected. I need to scroll the field up and out of the way when the keyboard is displayed. This is a pretty common problem and a solution is presented in this StackOverflow post. I think I have the ScrollController part figured out but how do I detect when the TextField has been selected? There doesn't appear to be any event method (e.g. onFocus(), onSelected(), onTap(),

问题 I am a Xcode newbie, please help. So I know how to change the text in Label box by with a text field: self.textLabel.text = self.textField.text The question is: how do I add static text to text that is being entered? Like if in the textField a name is entered, how do get the label box to display a "Hi," then whatever text that was entered? What do I have to put in front of "self.textField.text" after the "=" sign ? Thanks 回答1: You need to concatenate 2 Strings. Here are some clues: Shortcuts

问题 I have a JTextfield where a user enters a "social security number". The SSN has 9 digits and 2 dashes for a total of 11 characters. How do I limit the JTextField to 11 characters and also have 2 dashes in the textfield at the 4 th and 7 th position of the 11 characters? 回答1: You might want to use : JFormattedTextField See this for more help : How to Use Formatted Text Fields Also this might help : MaskFormatter Here is a sample snippet : MaskFormatter formatter = new MaskFormatter("####-###-#

问题 in my company we got a task to implement an autoexpandable textfield. As this functionality is not provided by default we had to develop it from scratch. There are many posibilities across web, how it can be achived, but no one worked for as, so we decided to put our code on SO, so other devs can also use it. As it is not possbile to expand a textfield the solution is textarea based: public class TextFieldExpandable extends TextArea { private final double DEFAULT_HEIGHT = 17.0; public

问题 I am working on a JavaFX project and I have a problem using the TextField control. I want to limit the characters that users will enter to each TextField to one. I found a solution if you use a single textfield with a Listener: public static void addTextLimiter(final TextField tf, final int maxLength) { tf.textProperty().addListener(new ChangeListener<String>() { @Override public void changed(final ObservableValue<? extends String> ov, final String oldValue, final String newValue) { if (tf