我有这段代码:
var hour = parseInt(js_arr[j].substring(0, 1));
var min = parseInt(js_arr[j].substring(3, 4));
var seconds = parseInt(js_arr[j].substring(6, 7));
var mil_sec = parseInt(js_arr[j].substring(9, 11));
var time = (hour * 3600000) + (min * 60000) + (seconds * 1000) + mil_sec;
function timeout() {
setTimeout(function () {
if (true) {
document.getElementById('subs').innerHTML = js_arr[i];
i = i + 4;
j = j + 4;
hour = parseInt(js_arr[j].substring(0, 1));
min = parseInt(js_arr[j].substring(3, 4));
seconds = parseInt(js_arr[j].substring(6, 7));
mil_sec = parseInt(js_arr[j].substring(9, 11));
time = (hour * 3600000) + (min * 60000) + (seconds * 1000) + mil_sec;
timeout();
} else {
timeout();
}
}, time);
}
在javascript代码之前,我有一个onclick="timeout();
按钮。
此按钮允许播放字幕。我还希望它能够通过点击相同的按钮来停止播放这些字幕。如果有人能帮忙的话会很棒!
非常感谢。
答案 0 :(得分:0)
添加一个变量,指示超时是否处于活动状态。在timeout()
- 函数中,检查此变量,并且只有在其为真时才启动另一个循环。要启动和停止,只需设置(并调用timeout()
)或重置变量。
var hour = parseInt(js_arr[j].substring(0,1));
var min = parseInt(js_arr[j].substring(3,4));
var seconds = parseInt(js_arr[j].substring(6,7));
var mil_sec = parseInt(js_arr[j].substring(9,11));
var time = (hour*3600000)+(min*60000)+(seconds*1000)+mil_sec;
var timeOutRunning = false;
function startTimeOut() {
timeOutRunning = true;
timeout();
}
function stopTimeOut() {
timeOutRunning = false;
}
function timeout() {
if(timeOutRunning) {
setTimeout(function() {
document.getElementById('subs').innerHTML = js_arr[i];
i=i+4;
j=j+4;
hour = parseInt(js_arr[j].substring(0,1));
min = parseInt(js_arr[j].substring(3,4));
seconds = parseInt(js_arr[j].substring(6,7));
mil_sec = parseInt(js_arr[j].substring(9,11));
time = (hour*3600000)+(min*60000)+(seconds*1000)+mil_sec;
timeout();
}, time);
}
}
然后是onclick-function:
onclick="if(timeOutRunning) { stopTimeOut(); } else { startTimeOut(); }"