JS挂起了一个do while循环 [英] JS hangs on a do while loop

问题描述

我想知道如何用JS来解决挂页。

I am wondering how I can solve a hanging page with JS.

我有一个JS循环，我正在测试这样，但它似乎永远挂起 - 有没有办法在完成脚本的同时阻止它挂起？：

I have a JS loop which I'm testing like this, but it seems to hang forever - is there a way to stop it hanging while still completing the script ?:

<div id="my_data"></div>

<script>
function test(value){
output= [];
do{ 
    value++;
    output.push(value);
    document.getElementById('my_data').innerHTML = (output.join(''));
}while(value < 10000000);
alert('end'); // never occurs
}

test(0);
</script>

推荐答案

您正在连接 10,000,000 将连续数字组合成一个字符串，这在任何现代超级计算机上都无法正常工作。

You are concatenating 10,000,000 consecutive numbers together into a string, which really will not work well on any modern supercomputer.

如果您想轮询进度，请设置一个计时器，它做得有点慢。它不实用，但看起来不错： http://jsfiddle.net/V6jjT/2/

If you'd like to poll the progress, setup a timer to do it somewhat slower. It isn't practical, but it looks nice: http://jsfiddle.net/V6jjT/2/

HTML：

<div id="my_data"></div>

脚本：

var value = 0;
var interval = setInterval(function() {
    if (value > 100) {
        clearInterval(interval);
        return;
    }

    value++;
    document.getElementById('my_data').innerHTML += ' ' + value;
}, 10);

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