如何在 javascript 中实现无限循环 [英] how do an infinite loop in javascript

问题描述

我正在尝试使用 0 到 100 和 100 到 0 之间的 while 进行无限循环，但是浏览器崩溃了.有没有办法清除浏览器内存?这是我的代码:

Im trying to do an infinite loop using while between 0 to 100 and 100 to 0, but the browser crashes. There is a way to clear the browser memory? This is my code:

var a = 0;
var flag = true;

while (true) {

    if (a < 100 && flag == true) {

        a++;

    } else {

        a = 0;
        flag = false;

        if (a < 0) {
            flag = true;
        }

    }

    console.log(a);

}

推荐答案

无限 while 循环会阻塞主线程，相当于崩溃.你可以使用自调用函数(这让主线程在中间做一些其他的事情):

An infinite while loop will block the main thread wich is equivalent to a crash. You could use a selfcalling function ( wich leaves the main thread doing some other stuff inbetween):

(function main(counter){
    console.log(counter);
    setTimeout(main,0,counter+1);
})(0);

您可以将一个从 0 到 100 的循环，以及一个从 100 到 0 的循环放入其中，而不会过多地阻塞浏览器:

You can put a loop that goes from 0 to 100, and one that goes from 100 to 0 into it, without blocking the browser too much:

(function main(){
    for(var counter=0;counter<100;counter++){
       console.log(counter);
    }
   console.log(100);
    while(counter){
       console.log(--counter);
    }
    setTimeout(main,0);
})();

http://jsbin.com/vusibanuki/edit?console

进一步研究:JS IIFEs、函数表达式、非阻塞槽 setTimeout ...

Further research: JS IIFEs , function expression, non-blocking trough setTimeout ...

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