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Explain page redirection in ES6?

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2023-09-13 16:33:03659browse

解释一下 ES6 中的页面重定向?

This tutorial will introduce page redirection introduced in the ES6 version of JavaScript. Page redirection is a method of sending web page visitors from the current URL to another URL. We may redirect users to a different page on the same website or to another website or server.

In JavaScript, a window is a global object that contains a location object. We can use different methods of the location object to redirect pages in ES6, which is what we will learn next.

Use the href attribute value of the window.location object

The location object of the window global object contains the href attribute. The location object contains all the information about the location of the page you are currently on. The "href" attribute of the location object contains the current URL.

To redirect visitors to a different URL, we need to change the current URL in the web browser, which can be achieved by changing the value of the href attribute of the location object.

grammar

Users can redirect visitors to another page by changing the value of the href attribute by following the following syntax.

window.location = "<new_URL>";
window.location.href = "<new_URL>";

In the above syntax, if we assign a new URL value to the window.location object, by default, the value of the href attribute of the location object will be changed.

Example

In the example below, we create a button with the text "Redirect to another web page". When the user clicks the button, we will call JavaScript's redirect() function.

In the redirect() function, we are changing the value of the href attribute of the location object, which will take the visitor to the new URL.

<html>
<body>
   <h2>Using window.location.href attribute for page redirection</h2>
   <p>Click below button to redirect </p>
   <button id="redirect" onclick="redirect()">
   Redirect to the another webpage
   </button>
   <script type="text/javascript">
      function redirect(){
         window.location.href="https://tutorialspoint.com/"
      }
   </script>
</body>
</html>

Use location.assign()method

assign() is a method defined inside the position object. We can load a new document in the browser window using the location.assign() method, reloading the new document in the browser means redirection.

grammar

Use the allocate() method to redirect according to the following syntax.

window.location.assign("<new_URL>");

In the above syntax, we call the allocate() method with the location object as a reference.

parameter

  • New_URL - This is the URL we want to redirect the user to.

Example

In this example, we use the allocate() method of the location object to load another web page in the current browser window.

<html>
<body>
   <p>Using the <i>window.location.assign()</i> method to redirect users to another webpage.</p>
   <button id="redirect" onclick="redirect()">Redirect </button>
   <script type="text/javascript">
      function redirect(){
         window.location.assign("https://www.tutorialspoint.com ");
      }
   </script>
</body>
</html>

Use location.replace()Method

The location object's replace() method works the same as the assign() method. The only difference between the Replace() and allocate() methods is that the replace() method replaces the current URL with a new URL from the history stack. Therefore, it does not allow the history stack to contain information about the previous web page, meaning the user cannot go back.

The

assign() method adds a new entry to the history stack. Therefore, the user can return to the previous page using the web browser's back button.

grammar

Users can use the replace() method to redirect the page according to the following syntax.

Window.location.replace("<redirection_URL>")

parameter

  • Redirection_URL - The redirect URL is the new URL to which we want to redirect visitors to the web page.

Example

In this example, we use the replace() method of the location object to redirect the user to a new web page. In the output, the user can try to go back by clicking the back button after the redirect. The Replace() method is not allowed to return.

<html>
<body>
   <p>Using the <i>window.location.replace()</i> method to redirect users to another webpage.</p>
   <button id="redirect" onclick="redirect()">Redirect </button>
   <script type="text/javascript">
      function redirect(){
         window.location.replace("https://www.tutorialspoint.com");
      }
   </script>
</body>
</html>

In addition, users can also use the navigate() method of the window object for redirection. The navigate() method is deprecated and therefore not recommended for redirection.

We learned 3 to 4 ways to redirect users to different web pages. Users can use any method according to their needs. For example, if they want to replace the current URL, use the Replace() method; otherwise, use the allocate() method. Users can use the reload() method to obtain new server data.

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