jquery automatically calls method

jQuery is one of the most commonly used JavaScript libraries currently. It is built on top of JavaScript, allowing developers to quickly write complex page functions. It also has features such as cross-browser support, event handling, and selector engines. Advantages of waiting. In this article, we will explore jQuery's automatic calling method, which automatically executes a specific function after the page loads.

There are many ways to implement jQuery's automatic calling methods. We will learn two of them below.

1. Use the $(function(){}) function

$(function() {}) function is the most commonly used method to automatically call a function. Its syntax is relatively simple, just write the relevant code directly in $(function() {}).

The following is a sample code:

// jQuery 自动调用方法
$(function() {
  // 这里放置需要自动调用的代码
});

In this example, jQuery automatically calls a piece of code placed in $(function(){}). In this way, as soon as the page is loaded, the code within this function will be executed immediately.

2. Use the $(document).ready() function

Another commonly used method of automatically calling functions is $(document).ready(). Similar to the $(function() {}) function, the $(document).ready() function is used to automatically call a function after the page is loaded.

The following is a sample code using the $(document).ready() function:

// jQuery自动调用方法
$(document).ready(function() {
  // 这里放置需要自动调用的代码
});

In this example, the $(document).ready() function is the same as $(function() {}) functions have the same effect.

It should be noted that although $(document).ready() and $(function() {}) have the same function, they are not exactly the same. The $(document).ready() method is a method of an earlier version of jQuery, while the $(function() {}) function is a newly added syntactic sugar. In actual development, it is recommended to use $(function() {}) to realize the function of automatically calling functions.

Summary:

Here, we have an in-depth understanding of the two implementation methods of jQuery's automatic calling method. You can choose which method to use based on your specific needs. If you simply want to automatically execute a function as soon as the page loads, use the $(function() {}) function. If you prefer a more formal method of calling functions, then using the $(document).ready() method is a better choice. In short, by learning these two methods, we can better utilize the powerful functions of the jQuery library and bring more possibilities to our web page creation.

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