Let's talk about the problem that jquery touch events cannot be registered

With the development of mobile Internet, more and more websites and applications are designed to be used on touch screens. This has also led to an increasing need for jQuery Touch events. However, sometimes even if the code is written correctly, jQuery Touch events still fail to register properly. This article will explore some common jQuery Touch event registration issues and solutions.

1. jQuery library is not referenced correctly

Before using jQuery Touch events, we need to reference the jQuery library first. If it is not referenced correctly, the Touch event will not be registered normally. Therefore, we need to add the following code in the tag:

<script src="https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js"></script>

This will load the jQuery library. At the same time, we need to make sure to comment out other possible jQuery library references when writing code, otherwise they may conflict with jQuery Touch events.

2. Not waiting for the DOM tree to be loaded

Another problem that may cause the jQuery Touch event to fail to be registered is that the code does not wait for the DOM tree to be loaded. This is because the Touch event needs to wait for the elements in the HTML to be completely loaded before the Touch event can be correctly recognized. To ensure that the DOM tree is loaded, we can use the .ready() function provided in jQuery. An example is as follows:

$(document).ready(function() {
    // 在这里编写 Touch 事件代码
});

3. Touch event exists simultaneously with Click event

Another common problem is using both Click event and Touch event on the same element. This causes the two events to conflict because they both respond to the user's click action. Therefore, we need to convert the Click event into a Touch event to avoid conflicts. An example is as follows:

$(document).ready(function() {
   var clickTimeout;
   $('#myButton').on('touchend', function() {
      clearTimeout(clickTimeout);
      // 在这里编写 Touch 事件代码
   }).on('touchstart', function() {
      clickTimeout = setTimeout(function() {
         // 在这里编写 Click 事件代码
      }, 500);
   });
});

In this example, we use the "clickTimeout" variable to record the duration of the user's "tap" action. If the tap action takes less than 500 milliseconds, the code will be considered a Click event. Otherwise, it will be treated as a Touch event.

In addition to the above common problems, there may be other reasons why jQuery Touch events cannot be registered. If the above solutions still do not solve the problem, please check your code for spelling errors, grammatical errors, etc., and try to modify your code. At the same time, you can also seek help on the jQuery official website or Stack Overflow and other websites.

In short, jQuery Touch events are very important for websites and applications on mobile devices. Correctly registering jQuery Touch events can not only improve user experience, but also avoid unnecessary errors and problems. I hope this article can help you solve the problem of jQuery Touch event registration.

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