题
如果条件正确,我需要从运行间隔退出:
var refreshId = setInterval(function() {
var properID = CheckReload();
if (properID > 0) {
<--- exit from the loop--->
}
}, 10000);
解决方案
利用 Clear Interval:
var refreshId = setInterval(function() {
var properID = CheckReload();
if (properID > 0) {
clearInterval(refreshId);
}
}, 10000);
其他提示
更新了ES6
您可以范围范围来避免污染名称空间:
const CheckReload = (() => {
let counter = - 5;
return () => {
counter++;
return counter;
};
})();
{
const refreshId = setInterval(
() => {
const properID = CheckReload();
console.log(properID);
if (properID > 0) {
clearInterval(refreshId);
}
},
100
);
}
通过 setInterval
至 Clear Interval.
简单示例
const interval = setInterval(() => {
clearInterval(interval);
}, 1000)
倒数示例
计时器每秒减小,直到达到0。
let secondsToCountDown = 2
const interval = setInterval(() => {
// just for presentation
document.querySelector('.timer').innerHTML = secondsToCountDown
if (secondsToCountDown === 0) {
clearInterval(interval); // time is up
}
secondsToWait--;
}, 1000);
<p class="timer"></p>
倒数示例与分离
let secondsToCountDown = 2
const doStuffOnInterval = () => {
document.querySelector('.timer').innerHTML = secondsToCountDown
if (secondsToCountDown === 0) {
stopInterval()
}
secondsToCountDown--;
}
const stopInterval = () => {
clearInterval(interval);
}
const interval = setInterval(doStuffOnInterval, 1000);
<p class="timer"></p>
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