Let’s talk about the methods of related events in jquery

jQuery is a widely used JavaScript library that includes functions for manipulating DOM elements, handling events, handling animations, sending AJAX requests, and building plug-ins. Among them, events are an important part of jQuery. jQuery provides a large number of event-related methods. This article will focus on the associated event methods in jQuery.

Associated events mean that when an event occurs on one element, an event will occur on another element. This mechanism is often used in development, such as common tab switching, mouse hover prompts, etc. By using jQuery's associated event method, you can easily implement this mechanism.

1. Hover() method

The hover method is one of the most commonly used associated event methods in jQuery. It accepts two callback functions as parameters, one for handling mouse-in events and the other for handling mouse-out events. When using the hover method, you only need to use the element that needs to be associated with the event as the selector, for example:

$(".box").hover(
   function(){
       //鼠标移入时执行的代码
   },
   function(){
       //鼠标移出时执行的代码
   }
);

2. on() method

The on method is a universal event binding in jQuery Defined methods can bind any type of events, including keyboard events, mouse events, form events, etc. The on method supports multiple event bindings and supports multiple elements binding the same event at the same time. When using the on method, you can implement associated events by passing two parameters, for example:

$(".box1").on("click", function(){
    //当.box1元素被点击时执行的代码
    $(".box2").click();
});

In this code, when the box1 element is clicked, the click event of the box2 element will be triggered, thus realizing the associated event. Effect.

3. Trigger() method

The trigger method is used to trigger events bound to the specified element. It can be used for programs to automatically trigger events or for manual triggering of events. When using the trigger method in a related event, you can trigger the event on the first element first to achieve the effect of triggering the event on the second element. For example:

$(".box1").click(function(){
    $(".box2").trigger("click");
});

In this code, when the box1 element is clicked, the click event of the box2 element will be triggered, thus achieving the effect of associated events.

4. bind() method

The bind method is an older event binding method in jQuery, which can bind events to specified elements. When using the bind method to implement associated events, you only need to bind the elements that need to be associated with the same event. For example:

$(".box1").bind("click", function(){
    $(".box2").click();
});

In this code, when the box1 element is clicked, the click event of the box2 element will be triggered, thus achieving the effect of associated events.

Summary:

The above introduces several commonly used associated event methods in jQuery, which are hover, on, trigger and bind methods. In actual development, it is necessary to choose an appropriate method according to the situation to achieve the desired associated event effect. At the same time, when using related events, you need to pay attention to the order in which events are triggered to avoid unexpected effects.

The above is the detailed content of Let’s talk about the methods of related events in jquery. For more information, please follow other related articles on the PHP Chinese website!