key-events | 易学教程

Jquery: how to trigger click event on pressing enter key

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问题 I need to execute a button click event upon pressing key enter. As it is at the moment the event is not firing. Please Help me with the syntax if possible. $(document).on("click", "input[name='butAssignProd']", function () { //all the action }); this is my attempt to fire click event on enter. $("#txtSearchProdAssign").keydown(function (e) { if (e.keyCode == 13) { $('input[name = butAssignProd]').click(); } }); 回答1: try out this.... $('#txtSearchProdAssign').keypress(function (e) { var key =

Key bindings vs. key listeners in Java

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I note that in Java / Swing there seem to be at least two different ways of handling key events: Key Bindings Key Listeners What are the advantages / disadvantages of each, and when should you prefer one rather than the other? when should you prefer one rather than the other? Prefer Key Bindings since they were introduced. A KeyListener is a lower level connection with events. That page for the key bindings covers a lot of the reasons I would tend to use them rather than a KeyListener . It lists many things which are simply 'not available' to a KeyListener . E.G. choices of: WHEN_FOCUSED WHEN

Key bindings vs. key listeners in Java

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问题 I note that in Java / Swing there seem to be at least two different ways of handling key events: Key Bindings Key Listeners What are the advantages / disadvantages of each, and when should you prefer one rather than the other? 回答1: when should you prefer one rather than the other? Prefer Key Bindings since they were introduced. A KeyListener is a lower level connection with events. That page for the key bindings covers a lot of the reasons I would tend to use them rather than a KeyListener .

How to use Key Bindings instead of Key Listeners

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问题 I\'m using KeyListeners in my code (game or otherwise) as the way for my on-screen objects to react to user key input. Here is my code: public class MyGame extends JFrame { static int up = KeyEvent.VK_UP; static int right = KeyEvent.VK_RIGHT; static int down = KeyEvent.VK_DOWN; static int left = KeyEvent.VK_LEFT; static int fire = KeyEvent.VK_Q; public MyGame() { // Do all the layout management and what not... JLabel obj1 = new JLabel(); JLabel obj2 = new JLabel(); obj1.addKeyListener(new