Question

我想创建一个随机重定向到网站的tampermonkey脚本而不重复。一旦查看了所有网站，我希望有一个警报通知脚本已完成。

我从这里使用了脚本（How to redirect to one out of given set of sites?），但它重复了网站。

我应该怎么做呢？

// ==UserScript==
// @name        Cat slideshow
// @match       https://i.imgur.com/homOZTh.jpg
// @match       https://i.imgur.com/NMDCQtA.jpg
// @match       https://i.imgur.com/iqm9LoG.jpg
// ==/UserScript==

var urlsToLoad  = [
    'https://i.imgur.com/homOZTh.jpg',
    'https://i.imgur.com/NMDCQtA.jpg',
    'https://i.imgur.com/iqm9LoG.jpg',
];

setTimeout (GotoRandomURL, 4000);

function GotoRandomURL () {
    var numUrls     = urlsToLoad.length;
    var urlIdx      = urlsToLoad.indexOf (location.href);
    if (urlIdx >= 0) {
        urlsToLoad.splice (urlIdx, 1);
        numUrls--;
    }

    urlIdx          = Math.floor (Math.random () * numUrls);
    location.href   = urlsToLoad[urlIdx];
}

Answer 1

编辑：修复了代码的math.random部分。

这应该有效。我只是制作数组的副本，然后导航到url后，我从复制的数组中删除了该url。它只会在经过所有网址并重新开始后重复网址。

const urlsToLoad = [
  'https://i.imgur.com/homOZTh.jpg',
  'https://i.imgur.com/NMDCQtA.jpg',
  'https://i.imgur.com/iqm9LoG.jpg',
];

let copyOfUrlsToLoad = [];

setTimeout(goToRandomURL, 4000);

function goToRandomURL () {
  if (copyOfUrlsToLoad.length === 0) {
    copyOfUrlsToLoad = urlsToLoad;
  }
  urlIdx = getRandomInt(0, copyOfUrlsToLoad.length);
  location.href = copyOfUrlsToLoad[urlIdx];
  copyOfUrlsToLoad.splice(urlIdx, 1);
}

// This function comes from https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random#Getting_a_random_integer_between_two_values
function getRandomInt(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min)) + min; //The maximum is exclusive and the minimum is inclusive
}

如果您想在新标签页或新窗口中打开网址，this answer表示要将location.href行替换为以下内容：

window.open(copyOfUrlsToLoad[urlIdx], '_blank');

Javascript - 如何随机重定向到网站而不重复？

1 个答案: