How do I go about binding a function to left and right arrow keys in Javascript and/or jQuery? I looked at the js-hotkey plugin for jQuery (wraps the built-in bind function to add an argument to recognize specific keys), but it doesn't seem to support arrow keys.
document.onkeydown = function(e) { switch(e.which) { case 37: // left break; case 38: // up break; case 39: // right break; case 40: // down break; default: return; // exit this handler for other keys } e.preventDefault(); // prevent the default action (scroll / move caret) };
If you need to support IE8, start the function body as e = e || window.event; switch(e.which || e.keyCode) {
.
(edit 2020)
Note that KeyboardEvent.which
is now deprecated. See this example using KeyboardEvent.key
for a more modern solution to detect arrow keys.
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