javascript setInterval 的更改间隔
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Change interval of setInterval
提问by SF.
Is there a way of modifying the interval of calls of function set with setInterval during runtime, other than removing it (clearInterval) and reinstating again with a different value?
除了删除它（clearInterval）并使用不同的值再次恢复之外，有没有办法在运行时修改使用 setInterval 设置的函数的调用间隔？
回答by oleq
Use setTimeout instead, additionally this a non-blocking method for async JS:
使用 setTimeout 代替，另外这是异步 JS 的非阻塞方法：
var interval = 1000;
function callback() {
console.log( 'callback!' );
interval -= 100; // actually this will kill your browser when goes to 0, but shows the idea
setTimeout( callback, interval );
}
setTimeout( callback, interval );
Don't use setInterval, as in some cases (lots of setInterval+ long callbacks, which are usually longer than timeout), due to limited queue size, some callbacks will be dropped by the browser and never executed. Only setTimeoutguarantees execution.
不要使用setInterval，因为在某些情况下（很多setInterval+长的回调，通常比超时长），由于队列大小有限，一些回调将被浏览器丢弃并且永远不会执行。只setTimeout保证执行。
回答by Phrogz
Nope; removing the interval and re-adding it is the way to do it if you've used setInterval().
不; 如果您使用过setInterval().
You could accomplish the same goal of a varying timeout, however, by calling setTimeout()repeatedly with a variable delay at the end.
但是，您可以通过setTimeout()在最后以可变延迟重复调用来实现不同超时的相同目标。
Out of curiosity, what are you doing that you want to modify the interval? Perhaps requestAnimationFrame()might be more appropriate?
出于好奇，您在做什么要修改间隔？或许requestAnimationFrame()更合适？
