Firstly, think about why you’re doing this. If you’re trying to stop users from editing certain elements, just set contenteditable to false on those elements. However, it is possible to do what you ask. The code below works in Safari 4 and will return the node the selection is anchored in (i.e. where the user … Read more
You can set the caret position using CaretIndex property of a TextBox. Please bear in mind that this is not a DependencyProperty. Nevertheless, you may still set it in XAML like this: <TextBox Text=”123″ CaretIndex=”{x:Static System:Int32.MaxValue}” /> Please remember to set CaretIndex after Text property or else it will not work. Thus it probably won’t … Read more
This is a VERY basic example. This basically walks the document to find the position of the word within the document and ensures that the text is moved to the viewable area. It also highlights the match public class MoveToText { public static void main(String[] args) { new MoveToText(); } public MoveToText() { EventQueue.invokeLater(new Runnable() … Read more
These are blocks which add anonymous functions and function objects to Objective-C. See e.g. Introducing Blocks and Grand Central Dispatch : Block objects (informally, “blocks”) are an extension to C, as well as Objective-C and C++, that make it easy for programmers to define self-contained units of work. Blocks are similar to — but far … Read more
Maybe I’m misreading the question, but wouldn’t the following do (assuming an editable <div> with id “editable”)? The timer is there because in Chrome, the native browser behaviour that selects the whole element seems to trigger after the focus event, thereby overriding the effect of the selection code unless postponed until after the focus event: … Read more
// Get the focused element: var $focused = $(‘:focus’); // No jQuery: var focused = document.activeElement; // Does the element have focus: var hasFocus = $(‘foo’).is(‘:focus’); // No jQuery: elem === elem.ownerDocument.activeElement; Which one should you use? quoting the jQuery docs: As with other pseudo-class selectors (those that begin with a “:”), it is recommended … Read more
-> selectionStart <!doctype html> <html> <head> <meta charset = “utf-8”> <script type = “text/javascript”> window.addEventListener (“load”, function () { var input = document.getElementsByTagName (“input”); input[0].addEventListener (“keydown”, function () { alert (“Caret position: ” + this.selectionStart); // You can also set the caret: this.selectionStart = 2; }); }); </script> <title>Test</title> </head> <body> <input type = “text”> … Read more
^ only means “not the following” when inside and at the start of [], so [^…]. When it’s inside [] but not at the start, it means the actual ^ character. When it’s escaped (\^), it also means the actual ^ character. In all other cases it means start of the string / line (which … Read more
It’s a bitwise XOR (exclusive OR). It evaluates to True if and only if its arguments differ (one is True, the other is False). To demonstrate: >>> 0^0 0 >>> 1^1 0 >>> 1^0 1 >>> 0^1 1 To explain one of your own examples: >>> 8^3 11 Think about it this way: 1000 # … Read more
The following code assumes: There is always a single text node within the editable <div> and no other nodes The editable div does not have the CSS white-space property set to pre If you need a more general approach that will work content with nested elements, try this answer: https://stackoverflow.com/a/4812022/96100 Code: function getCaretPosition(editableDiv) { var … Read more