Explore how to refresh a page using Javascript

Javascript is a widely used programming language. Many websites use Javascript to make their pages more interactive, and pages often need to be updated to showcase the latest data or functionality. In this article, we will explore how to refresh a page using Javascript.

Javascript There are two ways to refresh the page: using the browser's built-in method or using the method provided by Javascript itself.

1. Use the browser’s built-in refresh method

1. Use F5 to refresh the page

The most classic method is to use the F5 button to refresh the page. F5 is a built-in refresh method provided by the browser. It will reload and refresh the web page, but it will also re-fetch all resources and data. This method is suitable for scenarios where the entire page needs to be refreshed.

2. Use Ctrl F5 to refresh the page

Sometimes, the browser will save the cached file locally, which will cause the browser to get the old version of the page and cannot Get the latest web page. In this case, you can use the Ctrl F5 key combination to refresh the page. This method will also refresh all web page files, but will force the browser to ignore the cache and re-download the latest web page.

2. Use the refresh method provided by Javascript

1. Use the location.reload() method

location is an object provided by Javascript, representing the current The address of the document. The reload() method can be used to reload the current page.

Sample code:

function refreshPage() {
    location.reload();
}

This code will display a button on the page, and when the user clicks it, the page will be refreshed.

2. Use the setTimeout() method to refresh the page

The setTimeout() method can be used to refresh the page after a period of time. This method allows us to delay the refresh time according to our own needs.

Sample code:

function refreshPage() {
    setTimeout(function() {
        location.reload();
    }, 5000) // 5000毫秒 = 5秒
}

This code will refresh the page after 5 seconds.

3. Use the setInterval() method to refresh the page regularly

The setInterval() method can be used to refresh the page regularly. It differs from the setTimeout() method in that setInterval() executes the function at regular intervals instead of just once by default.

Sample code:

function refreshPage() {
    setInterval(function() {
        location.reload();
    }, 10000) // 10000毫秒 = 10秒
}

This code will refresh the page every 10 seconds.

Summary:

This article introduces the browser's built-in refresh method and the refresh method provided by Javascript, allowing readers to understand the two ways of refreshing the page in Javascript. In actual projects, we can choose the appropriate method according to actual needs.

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