textfield | 易学教程

How do I check if a textfield in iframe is empty?

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问题 Pretty much the question sums it up. I'm trying to do something similar to Gmail, where if you've entered stuff in a text field then the website will prompt you to to confirm if you want to leave the page. But what if the text field in question is in an iframe? Obviously I can assign the iframe an id, but is there any javascript command or something that can check if a field in an iframe is empty or not? Is this even possible? Edit: The iframe source and page the iframe is embedded in are

Replace text in textField with object name - Pymel

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问题 I've realized that there were similar questions located here: textfield query and prefix replacing and here: Python - Change the textField after browsing - MAYA However, these do not address the issue if you have two definitions and need the text in the textField to be queried (actually CHANGE the text in the textField). I know from experience that doing what I have below in MelScript actually works, but for the sake of Python, and learning how to do it in Python, it seems to not work. Am I

UITextField一些技巧总结

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我们在项目中肯定要用到UITextField允许用户输入，比如在登录、注册界面。小小的TextField有必要专门出一篇教程吗？当然是有必要的，因为使用场景不同，所以就有了不同的需求，本篇博客结合自己使用的一些需求，写出来与大家分享，如果有什么不对或者不足，请指正；如果大家有更好的方案，希望能够与我分享。另：本篇博客采用xib的编码方式，在关键地方会贴有图片，因为xib可以提高写博客速度，而且这也是ios开发的一个趋势。 1、需求1：改变TextField背景图片，默认的TextField的Border Style这样的此时你想设置背景图片，是没有效果的。选择其他三种Border Style，就可以设置背景图片了，很脑残的例子吧。 2、多个TextField时候，点击软键盘的换行（return）按钮，FirstResponder的切换其实，就是将FirstResponder切换到下一个UITextField，到最后一个TextField时候，点击换行（return）按钮，键盘退出。步骤：首先在ErrorViewController.xib上面拖4个UITextField（声明下，这里的ErrorViewController中的Error没有什么“错误的意思”，就是随便命名的，各位不要被误导），从上到下一次摆放，然后右键连线TextField至File’s Owner

iOS UITextField 使用与方法解读

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UITextField是IOS开发中用户交互中重要的一个控件，常被用来做账号密码框，输入信息框等。初始化一个文字框： UITextField * textField = [[UITextField alloc]initWithFrame:CGRectMake(100, 30, 100, 100)]; 设置和获取文字框文字： @property(nonatomic,copy) NSString *text; 通过AttributedString创建和获取文字： @property(nonatomic,copy) NSAttributedString *attributedText；设置字体颜色属性： @property(nonatomic,retain) UIColor *textColor; 设置字体属性： @property(nonatomic,retain) UIFont *font; 设置字体对齐格式： @property(nonatomic)NSTextAlignment textAlignment; 设置输入框风格： @property(nonatomic) UITextBorderStyle borderStyle; 这个风格是一个枚举，如下： typedef NS_ENUM(NSInteger, UITextBorderStyle) { //没有任何边框

Recommended way to restrict input in JavaFX textfield

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问题 It may seem the question is the duplicate of this. But my question is i have developed a integer textfield in JavaFX by two ways. The code is given below public class FXNDigitsField extends TextField { private long m_digit; public FXNDigitsField() { super(); } public FXNDigitsField(long number) { super(); this.m_digit = number; onInitialization(); } private void onInitialization() { setText(Long.toString(this.m_digit)); } @Override public void replaceText(int startIndex, int endIndex, String

Passing data between view controllers - iOS Xcode - what's a good way?

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Alright, I'll try and make this as simple as possible (I was seeming to get the run around on chat.stackoveflow.com when I tried asking this question). I want to pass the text from a textfield in one viewcontroller to another viewcontroller. Should I use a Model class and store the the textfield.text in a Model.[h/m] files and then have the second view controller access the data stored in the model? Basically this is what I have, ViewControllerWelcome.h @interface ViewControllerWelcome : UIViewController { } @property (weak, nonatomic) IBOutlet UITextField *textFieldUsername;

IOS/Xcode: How to Move View Up when Keyboard appears

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问题 There are many answers on this on SO but most are from years ago and none seem quite satisfactory. For a login screen with just three textfields and submit button, I want the view to move up when the keyboard appears just enough so that while the field is not hidden, it also does not move up out of view. The amount of movement needed is such that the submit button is a fixed distance above the keyboard. While it is possible by moving the fields high up on the page to leave room for the

How can a textfield from fxml file be updated by setText in java file?

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I am looking to update text in a textfield based on some value. In order to make this sample simpler I have made my program smaller. The problem seems to be when I put top.setText("This is my new Text"); I looked at this: how to change the text of TextField in java fx 2 but the answer does not seem to make sense. I don't know why you'd initialize a textfield that has already been implemented. Regardless it did not work. I have also looked at: NullPointerException (JavaFX Label.setText()) This seems to be the closest to what I think is the issue, but when I did the following I get an error.

Avoiding cursor change over dynamic text fields in Flash CS3

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问题 I have a dynamic text field inside a MovieClip symbol. Whenever the mouse pointer is hovered over the symbol, the cursor changes to the I-shaped text editing cursor. This may be a very stupid question, but is there any way to avoid this? Not even using mouse.hide() keeps the "I" cursor from appearing. 回答1: Have you tried setting the TextField's selectable property to false? This will prevent the user from dragging the mouse to select the text (thus they can't copy it to the clipboard), but I

Passing data between view controllers - iOS Xcode - what's a good way?

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问题 Alright, I'll try and make this as simple as possible (I was seeming to get the run around on chat.stackoveflow.com when I tried asking this question). I want to pass the text from a textfield in one viewcontroller to another viewcontroller. Should I use a Model class and store the the textfield.text in a Model.[h/m] files and then have the second view controller access the data stored in the model? Basically this is what I have, ViewControllerWelcome.h @interface ViewControllerWelcome :