我是一名JavaScript新手,但在以下方面遇到了一些麻烦:
function log_time() {
let time = document.getElementById("time").value;
console.log(time);
}
<input class="input-field" type="time" id="time" onchange="log_time()" step="1">
值的格式如下HH:MM:SS,但是当秒数为00时,它将被完全截断,并且所得到的时间变量变为HH:MM。
有没有办法防止秒数被截断,或者如果秒数被截断,则检查以格式化该值?
这样的事情怎么样?
const timeElement = document.getElementById("time")
timeElement.addEventListener('change', (e => {
// extract e.target.value as timeVal with default value "00:00:00"
const {target: {value: timeVal = "00:00:00"} = {}} = e || {};
// extract hours, minutes, seconds from the split array.
const timeValArray = timeVal.split(":");
const [hours, minutes, seconds = "00"] = timeValArray;
console.log("hours: ", hours)
console.log("minutes: ", minutes)
console.log("seconds: ", seconds)
}
));
输出:
hours: 17
minutes: 13
seconds: 00
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