Javascript

Question

我有一个包含多个页面的网站：page001.html、page002.html...page199.html...

如何使用 localsave 让它记住用户所在的页面，并使用户在 returns 访问网站时能够加载同一页面？

我打算有保存和加载按钮。我只是对 setItem 和 getItem 在这种情况下的工作方式感到困惑。值应该是多少？

我试过这样的事情：

Page001.html

function savePage() {
            localStorage.setItem("lastPageVisited", '001.html');
        }

 <p>This is page 001</p>
    <a href="002.html">Go to the Next Page</a> 
    <button onclick="savePage()">Save</button>

Page002.html

function savePage() {
            localStorage.setItem("lastPageVisited", '002.html');
        }

function loadPage() {
            localStorage.getItem("lastPageVisited");
            window.location.href = 'LastPageVisited';
        }

<p>This is page 002</p>
    <a href="003.html">Go to the Next Page</a>
    <button onclick="savePage()">Save</button>
    <button onclick="loadPage()">Load</button>

我希望这个问题是有道理的。我仍在学习 javascript，可能不会以最正确的方式表达它。

Answer 1

我刚刚为你做了一个超小的样品。希望对您有所帮助。

我们的静态网站将包含三个页面：

Index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Index</title>
</head>

<body>
    <h2>This is the Index page</h2>
    <a href="home.html">Home</a>
    <a href="about.html">About</a>
    <button onclick="savePage()">Save</button>
    <button onclick="loadPage()">Load</button>

    <script>
        function savePage() {
            localStorage.setItem("lastPageVisited", '/index.html');
        }
        function loadPage() {
            const page = localStorage.getItem("lastPageVisited");
            const pathname = window.location.pathname;
            const url = window.location.href.replace(pathname, page);
            window.location.replace(url);
        }
    </script>
</body>

</html>

Home.html

<!DOCTYPE html>
<html lang="en"> 
<head>
    <title>Home</title>
</head>
<body>
    <h2>This is the Home page</h2>
    <a href="index.html">Index</a>
    <a href="about.html">About</a>
    <button onclick="savePage()">Save</button>
    <button onclick="loadPage()">Load</button>
    <script>
        function savePage() {
            localStorage.setItem("lastPageVisited", '/home.html');
        }
        function loadPage() {
            const page = localStorage.getItem("lastPageVisited");
            const pathname = window.location.pathname;
            const url = window.location.href.replace(pathname, page);
            window.location.replace(url);
        }
    </script>
</body>
</html>

About.html

<!DOCTYPE html>
<html lang="en">
<head>
    <title>About</title>
</head>
<body>
    <h2>This is the About page</h2>
    <a href="index.html">Index</a>
    <a href="home.html">About</a>
    <button onclick="savePage()">Save</button>
    <button onclick="loadPage()">Load</button>

    <script>
        function savePage() {
            localStorage.setItem("lastPageVisited", '/about.html');
        }
        function loadPage() {
            const page = localStorage.getItem("lastPageVisited");
            const pathname = window.location.pathname;
            const url = window.location.href.replace(pathname, page);
            window.location.replace(url);
        }
    </script>
</body>
</html>

这里的关键是使用window.location.replace()方法。此方法允许您用新文档替换当前文档。然后，在这个 window.location.replace() 方法的帮助下，我们只需做一些工作来计算 url string 以与我们的网站站点地图相匹配。

Javascript - 将页面保存到本地存储

Javascript - save page to localstorage

load

button

save

local-storage