logo
down
shadow

How to determine the visibility li's in a scrollable ul


How to determine the visibility li's in a scrollable ul

By : kostas
Date : November 24 2020, 01:01 AM
it should still fix some issue You could use the elements scrollTop and scrollHeight properties, and if your
  • elements have fixed heights, you could calculate which are visible.
    code :
    scrollTop / liHeight === numberOfOverTheFold
    
    (scrollHeight - scrollTop) / liHeigth === numberOfVisible
    


  • Share : facebook icon twitter icon
    c#: How do I determine if the ScrollBar for a Scrollable control is currently displayed?

    c#: How do I determine if the ScrollBar for a Scrollable control is currently displayed?


    By : dralaalbazzaz
    Date : March 29 2020, 07:55 AM
    it should still fix some issue For controls with the AutoScroll property try the HorizontalScroll and VerticalScroll Visible properties:
    code :
    // Checks horizontal scrollbar visibity.
    yourScrollableControl.HorizontalScroll.Visible;
    
    // Checks horizontal scrollbar visibity.
    yourScrollableControl.VerticalScroll.Visible;
    
    How to determine visibility in 2D

    How to determine visibility in 2D


    By : Abulooz
    Date : March 29 2020, 07:55 AM
    To fix the issue you can do If you're using simple shapes to block the entity's view, there is an easy way to do this that I have implemented:
    Create a VisionWave object which can move either horizontally or vertically. You can define a VisionWave using a source coordinate, two lines that intersect that point, and a distance from the source point.
    code :
      \     /
       \   />
        \ / >
         @  >
        / \ >
       /   \>
      /     \
    
    How to determine which lines are visible in scrollable JTextArea?

    How to determine which lines are visible in scrollable JTextArea?


    By : Andrew Williams
    Date : March 29 2020, 07:55 AM
    Any of those help How to determine number of the first visible line and the number of lines currently visible in scrollable JTextArea (JTextArea inside a JScrollPane)? , Okay, this is my take on the problem... (Nice question though)
    code :
    public class TestTextArea {
    
        public static void main(String[] args) {
            new TestTextArea();
        }
    
        public TestTextArea() {
            EventQueue.invokeLater(new Runnable() {
                @Override
                public void run() {
                    try {
                        UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
                    } catch (ClassNotFoundException ex) {
                    } catch (InstantiationException ex) {
                    } catch (IllegalAccessException ex) {
                    } catch (UnsupportedLookAndFeelException ex) {
                    }
    
                    JFrame frame = new JFrame();
                    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                    frame.setLayout(new BorderLayout());
                    frame.add(new TestTextAreaPane());
                    frame.pack();
                    frame.setLocationRelativeTo(null);
                    frame.setVisible(true);
                }
            });
        }
    
        public class TestTextAreaPane extends JPanel {
    
            private JTextArea textArea;
            private JTextArea viewText;
    
            public TestTextAreaPane() {
                setLayout(new GridLayout(2, 1));
                textArea = new JTextArea(20, 100);
                textArea.setWrapStyleWord(true);
                textArea.setLineWrap(true);
                textArea.setText(loadText());
    
                viewText = new JTextArea(20, 100);
                viewText.setWrapStyleWord(false);
                viewText.setLineWrap(false);
                viewText.setEditable(false);
    
                JScrollPane scrollPane = new JScrollPane(textArea);
                add(scrollPane);
    
                add(viewText);
    
                scrollPane.getViewport().addChangeListener(new ChangeListener() {
                    @Override
                    public void stateChanged(ChangeEvent e) {
                        if (textArea.getText().length() > 0) {
                            JViewport viewport = (JViewport) e.getSource();
                            Rectangle viewRect = viewport.getViewRect();
    
                            Point p = viewRect.getLocation();
                            int startIndex = textArea.viewToModel(p);
    
                            p.x += viewRect.width;
                            p.y += viewRect.height;
                            int endIndex = textArea.viewToModel(p);
    
                            if (endIndex - startIndex >= 0) {
    
                                try {
                                    viewText.setText(textArea.getText(startIndex, (endIndex - startIndex)));
                                } catch (BadLocationException ex) {
                                    ex.printStackTrace();
                                    viewText.setText(ex.getMessage());
                                }
    
                            }
    
                        }
    
                    }
                });
    
            }
    
            protected String loadText() {
                String text = null;
                File file = new File("src/testtextarea/TestTextArea.java");
    
                BufferedReader br = null;
                try {
                    br = new BufferedReader(new FileReader(file));
                    StringBuilder sb = new StringBuilder(128);
                    String read = null;
                    while ((read = br.readLine()) != null) {
                        sb.append(read).append("\n");
                    }
    
                    text = sb.toString();
                } catch (IOException exp) {
                    exp.printStackTrace();
                } finally {
                    try {
                        br.close();
                    } catch (Exception e) {
                    }
                }
    
                return text;
            }
        }
    }
    
    Accurately determine if element is scrollable

    Accurately determine if element is scrollable


    By : user3565983
    Date : March 29 2020, 07:55 AM
    With these it helps Do you want to know if an element can ever scroll or can currently scroll?
    Can an element ever scroll?
    code :
    e.css('overflow-y') == 'scroll' || e.css('overflow-y') == 'auto'
    
    How to determine with vanilla javascript that a <div> is scrollable?

    How to determine with vanilla javascript that a <div> is scrollable?


    By : user3422041
    Date : March 29 2020, 07:55 AM
    seems to work fine Check if the parent container has overflow-y, overflow-x or overflow that's either auto or scroll.
    javascript for checking if horizontally scrollable:
    code :
    const container = document.getElementByClassName('container');
    const overflowY = getComputedStyle(div).overflowY;
    const verticallyScrollable = overflowY === "auto" || overflowY === "scroll";
    
    Related Posts Related Posts :
  • angular 6 Please add a @NgModule annotation
  • Trying to cast element ID to class selector in jQuery
  • Swipe JS - Display 3 Slides at a time
  • Jasmine test to call function when value is null
  • Redux reducer gets string instead of object
  • Keep chrome javascript running even if page reload
  • The event.target.value is not insert the userinput into a variable
  • Exporting HTML tables to Excel (.xls) in a separate sheet
  • Jquery tooltip on dialog close button
  • access variable inside anonymous function from outside
  • How come func is called from a function?
  • How to change add and remove active class in JavaScript
  • how to toggle a specific div in javascript
  • How to get all the values from multiple keys of an array of object?
  • jQuery bind() unbind() and on() and off()
  • regular expression to find DD Month YYYY from a string
  • How to upload files from web client (HTML/jQuery form) to your Dropbox folder
  • Backbone history and require.js issue
  • Confusion over Classical and Prototypal Inheritance Javascript
  • How to take screen shot of current webpage using Javascript/JQuery?
  • Store meridiem in a variable
  • class declared inside closure vs standard class without closure
  • javascript confirm box always return true
  • dynamically changing the size of font size based on text length using css and html
  • Node.js - Getting the host IP address while on Amazon EC2
  • Confusing CSS, can anyone explain please
  • How to install v8-profiler on Windows 8 (64 bit) using npm?
  • Resolve promise based on another promise
  • google maps adding overlay layer above UI and markers
  • Style specific letter?
  • RangeError: Maximum call stack size exceeded with array.slice
  • node rest client get with local variable
  • If condition not executes while mouse move fastly
  • Count the number of displayed elements in a HTML list
  • Locate JavaScript source code in Emacs
  • Clean, Modular Code vs MV* Frameworks
  • infinite scroll without loading image
  • Backbone: reverse collection order with comparator
  • What do printers ignore?
  • jQuery UI .tabs() Contentless tab?
  • Execute Javascript alert() after page (visually) loaded
  • JavaScript - duplicating array doesn't work
  • Excessive clickable area below image
  • JavaScript Regex: Replace |b| with <b>
  • Unexpected value change in 2D array in JavaScript
  • Function doesnt see parameter as a array of objects
  • jQuery fetch keypress event on chrome and IE
  • How to enable jquery validate localization?
  • Cassandra map collection returned by node.js Helenus looks odd
  • angular ng-repeat with multiple filter options
  • Selecting Children without ID or Class names
  • How to uncheck a group of checkboxes when another checkbox is checked
  • Is hiding content by Javascript or jQuery Worth trying
  • Load XUL resource using javascript
  • XML to HTML text area from server file system
  • set focus() on textbox on form onload
  • es lint '' is assigned a value but never used' eventhough i have used it
  • Can "name" attribute be used for custom VueJS components
  • Get innerHTML of content when it is clicked
  • HTTPS causes CSS animations to not load? Very confused
  • shadow
    Privacy Policy - Terms - Contact Us © ourworld-yourmove.org