How to set cookies before jquery jumps

This article mainly introduces how to use jQuery to set cookies before page jump. In this way, the required data can be obtained from the cookie the next time you visit the website, thus improving the user experience.

1. Introduction to cookies

First of all, we need to understand what cookies are. A cookie is a small file stored in the user's computer that can store some user information, such as user name, password, etc. When the user visits the website again, this information can be obtained from the cookie without having to enter it again. This improves user experience and website ease of use.

2. How to use

To set and get cookies in jQuery, we need to use a jQuery plug-in-jquery-cookie. This plugin can be used to set, read and delete cookies.

Before using it, we need to introduce the jquery-cookie library file. You can add the following code to the <script> tag in the head: </script>

<script></script>

Next, we can use jQuery to set cookies. For example, we can set a cookie with a value of "hello" when we click the button:

$(function(){
  $('#btn').click(function(){
    $.cookie('test', 'hello');
  });
})

In this code, we use the $.cookie() function to set the cookie. The first parameter is the name of the cookie, and the second parameter is the value of the cookie.

Now, we only need to read the cookie before jumping to the page. For example, we can determine whether there is an item with the value "hello" in the cookie before jumping to the page. If so, jump to the target page:

$(function(){
  $('#link').click(function(e){
    if($.cookie('test')==='hello'){
      e.preventDefault();
      window.location.href = $(this).attr('href');
    }
  });
})

In this code, we use $. cookie() function to read cookies. If there is an item named "test" in the cookie and the value is "hello", the default action of jumping is blocked and the browser is redirected to a new page.

3. Summary

By using jQuery and jquery-cookie plug-ins, we can easily set and read cookies, thereby improving user experience and website usability. If you want to use cookies on your website, this method is worth trying.

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