JS - 重定向并返回主页

Question

我有一个问题，我想在Page1中创建一个脚本，并在X秒重定向到Page2之后，并且在Page2内部返回到Page1，并且使它不难，这是我的问题，从第2页返回后，我想要重定向到Page3，并返回到Page1，当我从Page3重新定位时，我想重定向到Page4，每次重定向都是X秒。我知道我可以使用meta标签重定向

<meta http-equiv="refresh" content="X; 
URL=Page2.com">

和Page2相同的标签返回到Page1，但我需要在Page1中做到这样的事情

<!-- First Redirect -->
<meta http-equiv="refresh" content="x; URL=Page2.com">
<!-- Second Redirect -->
<meta http-equiv="refresh" content="x+x; URL=Page3.com">
<!-- Third Redirect -->
<meta http-equiv="refresh" content="x+x+x; URL=Page4.com">
<!-- Fouth Redirect -->
<meta http-equiv="refresh" content="x+x+x+x; URL=Page5.com">

在脚本中有一些东西吗？因为它不起作用，总是将我重定向到Page1.com。

谢谢你的帮助！

Answer 1

你需要一个有状态的解决方案。这是一个可能的解决方案：

// PAGEX content where X = 2, 3, 4, 5...
<meta http-equiv="refresh" content="X; URL=page1.com">

和

// PAGE1 content:

<script>
let urls = JSON.parse(localStorage.getItem('urls') || '[-1]')
let urlList = ['page2.com', 'page3.com', 'page4.com']

if(urls[0] == -1) { // fresh start
  localStorage.setItem('urls', JSON.stringify(urlList))
  startRedirection(urlList[0])
} else if(urls.length == 0) { // all redirects done
  console.log("Exhausted")
  localStorage.removeItem('urls') // removes the key "urls" for a fresh start
} else {
  const url = urls.shift() // get the first url in "urls" array and remove it from the array
  localStorage.setItem('urls', JSON.stringify(urls)) // update the state
  startRedirection(url) // redirect
}

function startRedirection(url) {
  setTimeout(() => location.href = url, 2000)
}

</script>

Answer 2

page1.html：OnLoad检查下一页的url参数

function onLoad(){
   var url_string = window.location.href;
   var url = new URL(url_string);

   //Set pageName and time from url or some default value.
   var pageName = url.searchParams.get("pageName") !== null ? 
url.searchParams.get("pageName") : 'page2.html';
   var time = url.searchParams.get("time") !== null ? url.searchParams.get("time") : 1000;

   setTimeout(function(){
     window.location = pageName;
   }, parseInt(time));
}

page2.html：将下一个重定向页面作为参数传递

function onLoad(){
    window.location = 'page1.html?pageName=page3.html&time=2000'
}

Answer 3

我这样解决了：

<script>
let urls = JSON.parse(localStorage.getItem('urls') || '[-1]')
let urlList = ['page2.com', 'page3.com', 'page4.com']

if(urls[0] == -1) { // fresh start
localStorage.setItem('urls', JSON.stringify(urlList))
startRedirection('page1.com') 
} else if(urls.length == 0) { // all redirects done
console.log("Exhausted")
localStorage.removeItem('urls') // removes the key "urls" for a fresh start
location.reload();
} else {
const url = urls.shift() // get the first url in "urls" array and remove it 
from the array
localStorage.setItem('urls', JSON.stringify(urls)) // update the state
startRedirection(url) // redirect
}

function startRedirection(url) {
setTimeout(() => location.href = url, 2000)
}
</script>