Question

是否有像“处置”功能或“翻新的封闭线”这样的东西可以通过固定间隔运行。

Answer 1

(function () {
    var _setInterval = window.setInterval,
        _clearInterval = window.clearInterval;



    window.setInterval = function (fn, time) {
        //Implement your hooks here, hopefully without side effects
        return _setInterval(fn, time);
    };

    window.clearInterval = function (id) {
        //Implement your hooks here, hopefully without side effects
        return _clearInterval(id);
    };

})()

从评论来看,你显然不需要打耳光,因为你是在你控制的环境中。在这种情况下,你只能用同样的原则写上包装功能,如<条码>。

Answer 2

首先,正如其他人所说的那样,在javascript上没有透镜(除了网络工人之外),但我认为,你在此重复的话。

所有<代码>Interval()都一再称为一种功能——它只是一个read子,是先发制人,在所有其他javascript停止执行之后,它就赢得了警钟,以便处理时间活动。如果你的问题是,在间隔期结束后,你想要处置某个国家,这样就不再被叫作,那么你有两个选择:

1) You can use a javascript closure to store your state and when the interval is cleared, the closure will automatically be released.

2) You can create your own version of clearInterval that both clears the interval timer and cleans up your state.

j式封闭办法就是这样:

var interval;
function startMyInterval() {
    // sample state variables
    var state1 = 0;
    var state2 = [];
    var state3 = {whatever: "whatever"};

    interval = setInterval(function() {
        // javascript code here that can reference state1, state2 and state3
    }, 1000);
}

// then some time later when you want to stop the interval, you call clearInterval
// the closure is released and all the state variables are freed automatically
clearInterval(interval);

Or, if you want to do any other things when the interval is cleared, you can make your own function for clearing the interval that will not only release the closure, but also let you run any other code.

function clearMyInterval() {
    clearInterval(interval);
    // do any other cleanup you want to when the interval is stopped
}

我认为,其他人已建议用你自己的职能来打断/更换窗户,但我倾向于不这样做,因为不清楚这是否是一个得到支持/记录的特点,有些系统职能(越来越多的职能)正在受到保护,无法取代。

友情链接