Javascript 有没有办法通过 Onclick 按钮杀死 setInterval 循环
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Is there any way to kill a setInterval loop through an Onclick button
提问by JoeOzz
So, I got an infinite loop to work in this function using setInterval attached to an onClick. Problem is, I can't stop it using clearInterval in an onClick. I think this is because when I attach a clearInterval to an onClick, it kills a specific interval and not the function altogether. Is there anything I can do to kill all intervalsthrough an onClick?
因此，我使用附加到 onClick 的 setInterval 获得了一个无限循环来处理此函数。问题是，我无法在 onClick 中使用 clearInterval 来阻止它。我认为这是因为当我将 clearInterval 附加到 onClick 时，它会杀死特定的间隔而不是完全的函数。我可以做些什么来通过 onClick杀死所有间隔？
Here's my .js fileand the calls I'm making are
这是我的.js 文件，我正在进行的调用是
input type="button" value="generate" onClick="generation();
input type="button" value="Infinite Loop!" onclick="setInterval('generation()',1000);"
input type="button" value="Reset" onclick="clearInterval(generation(),80;" // This one here is giving me trouble.
回答by house9
setInterval returns a handle, you need that handle so you can clear it
setInterval 返回一个句柄，您需要该句柄以便清除它
easiest, create a var for the handle in your html head, then in your onclick use the var
最简单的方法，在你的 html 头中为句柄创建一个 var，然后在你的 onclick 中使用 var
// in the head
var intervalHandle = null;
// in the onclick to set
intervalHandle = setInterval(....
// in the onclick to clear
clearInterval(intervalHandle);
回答by kennytm
clearIntervalis applied on the return value of setInterval, like this:
clearInterval应用于 的返回值setInterval，如下所示：
var interval = null;
theSecondButton.onclick = function() {
if (interval === null) {
interval = setInterval(generation, 1000);
}
}
theThirdButton.onclick = function () {
if (interval !== null) {
clearInterval(interval);
interval = null;
}
}
回答by Diodeus - James MacFarlane
Have generation();call setTimeoutto itself instead of setInterval. That was you can use a bit if logic in the function to prevent it from running setTimeoutquite easily.
有generation();电话setTimeout来本身，而不是setInterval。那就是你可以在函数中使用一些 if 逻辑来防止它setTimeout很容易地运行。
var genTimer
var stopGen = 0
function generation() {
clearTimeout(genTimer) ///stop additional clicks from initiating more timers
. . .
if(!stopGen) {
genTimer = setTimeout(function(){generation()},1000)
}
}
}
}
