感谢您对之前(由主持人删除)的解释和简单的实现,但它不适用于我。 'holdit'函数可以工作,但不是不稳定,可能是因为'holdit'函数中有'onmouseup',即使我禁用了HTML按钮上的onmouseup,它也不是很稳定。也许最好使用addEventListener- onmousedown-interval函数,但我不知道如何以最简单的方式实现它。这是完整的功能,显示一个按下的按钮,并增加timeSeconds变量一。为了安全起见,数量在限制范围内。 请帮忙。执行按住按钮
HTML:
<img id="but4" class="button" src= "//:0" onmousedown="timesecPlus();"onmouseup="timesecPlsUp();"/>
JAVASCRIPT:
function timesecPlus() {
var pmknop = document.getElementById('but5');
pmknop.src = secminBtndwn; //inline Base64 data: button image down (pressed)
timeSeconds = ((timeSeconds>wedstrijdperiode.seconden-6)?(timeSeconds):(++timeSeconds)); //You can ++ chase-back the timeseconds until 5 sec's from period start-time
displayTime(timeSeconds);
};
function timesecPlsUp() {
var pmknop = document.getElementById('but5');
pmknop.src = secminBtn; //inline Base64 data: button image up (normal)
};
// Things I tried:
//holdit(pmknop, function() { ++timeSeconds ; displayTime(timeSeconds);}, 2000, 2);
//pmknop = pmknop.addEventListener('mousedown', function() { interval = setInterval(timesecPlus(), 2000); });
function holdit(btn, action, start, speedup) {
var t;
var repeat = function() {
action();
t = setTimeout(repeat, start);
start = start/speedup;
}
btn.onmousedown = function() {
repeat();
}
btn.onmouseup = function() {
clearTimeout(t);
}
};
btn是你想点击的按钮或其他html元素例如:'document.getElementById('myButton');'动作是按下按钮时重复的函数。例如:'function(){console.log('我的按钮被点击')}'。启动并加速我简单 – guest
在'mousedown'上设置超时并在'mouseup'上清除 –