[英]How do I prevent key press from repeatedly being fired - JavaScript/jQuery
I have a function that runs every frame on my website. 我有一个在我的网站上运行每一帧的功能。 Inside it, there is a key press check, that if I press a key, it gets fired at least a 100 times.
在它内部,有一个按键检查,如果我按下一个键,它至少会被触发100次。 How can I prevent this?
我怎么能阻止这个?
I've tried slowing down my FPS using a wait function, but to get it to work I have to slow it down to around 5 FPS, which is too slow. 我已经尝试使用等待功能减慢我的FPS,但为了让它工作,我必须将它减慢到大约5 FPS,这太慢了。
Here is the code inside the function that runs forever (I'm using socket.io, so there is a bit of that in there. Don't mind it): 这是函数内部的代码,它永远运行(我正在使用socket.io,所以那里有一些。不要介意):
// Rendering
$('#svg').empty();
for (var i = 0; i < players.length; i++){
var circle = makeSVG('circle', {cx: players[i].x, cy: players[i].y, r: '5vw', stroke: '#00FFFF', 'stroke-width': '0px', fill: '#00FFFF'})
document.getElementById('svg').appendChild(circle);
}
// Key Press
$(document).keydown(function(e) {
switch(e.which) {
case 37: // left
socket.emit('update', 'left');
break;
case 38: // up
socket.emit('update', 'up');
break;
case 39: // right
socket.emit('update', 'right');
break;
case 40: // down
socket.emit('update', 'down');
break;
default:
break;
}
e.preventDefault(); // prevent the default action (scroll / move caret)
});
socket.emit('update', 'No Keys')
I want the key press even to be sent 5 (about) times a second, not 60-100 like I am experiencing. 我希望按键甚至每秒发送5次(约)次,而不是像我正在经历的那样发送60-100次。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.