optikalefx Posted March 18, 2008 Share Posted March 18, 2008 so im using this kind of listener document.addEventListener('mousedown',function,true); this is only for firefox. how can i make var num increase as you hold down the arrow key i already can detect if the arrow is pressed, but not held. its called once, and it should keep on calling it. //for down arrow if (e.keyCode == "40") { } Link to comment https://forums.phpfreaks.com/topic/96656-how-to-detect-if-a-key-is-being-held/ Share on other sites More sharing options...
Psycho Posted March 19, 2008 Share Posted March 19, 2008 This uses a slgihtly different method, but works in FF and IE and gives you the time the mouse was down. Change 'interval' to the unit of time that you need to capture (100 = 10ths of a second): <HTML> <HEAD> <script type="text/javascript"> var interval = 100; //milliseconds var mdown = false; var seconds = 1000/interval; function init() { document.onmousedown = function (e) { mdown = true; changeState(mdown); startTimer(0); } document.onmouseup = function (e) { mdown = false; changeState(mdown); } } function changeState(state) { document.getElementById('mdstate').innerHTML = state; } function startTimer(timeDown) { if (mdown) { document.getElementById('mdtime').innerHTML = Math.round(timeDown/1000*seconds)/seconds; setTimeout('startTimer('+(timeDown+interval)+')', interval); } } </script> </HEAD> <BODY onload="init();"> Mouse Down State: <span id="mdstate"></span><br> Mouse Down Time: <span id="mdtime"></span> </BODY> </HTML> Link to comment https://forums.phpfreaks.com/topic/96656-how-to-detect-if-a-key-is-being-held/#findComment-496078 Share on other sites More sharing options...
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