How to get the click object in jquery

jQuery is a popular JavaScript library commonly used for interactive effects in web development. When the user clicks on an element on the web page, we need to get the clicked element. At this time, we need to use the event processing function provided by jQuery.

In jQuery, you can easily get the clicked element using event handling functions. Next we will explain in detail how to obtain the click object.

Event handling function in jQuery

In jQuery, the event handling function can be bound using the on() or click() method. For example:

$("button").on("click", function(){
    alert("按钮被点击了！");
});

$("div").click(function(){
    alert("DIV被点击了！");
});

Both binding methods bind a click event processing function. When the user clicks a button or DIV element, this processing function will be triggered.

Get the click object

In the event processing function, we can use the this keyword to get the object of the click event. For example, in the above example, the code to obtain the clicked button object is as follows:

$("button").on("click", function(){
    var btnObj = this;
    alert("按钮被点击了！");
});

The this keyword is used here to obtain the object of the click event, and the obtained object is <button>Element object. Similarly, we can also obtain the DIV element object through the this keyword:

$("div").click(function(){
    var divObj = this;
    alert("DIV被点击了！");
});

In actual development, we can also convert the obtained object into a jQuery object, so that we can use jQuery provides numerous methods to manipulate DOM elements. For example:

$("button").on("click", function(){
    var btnObj = $(this);
    btnObj.hide(); // 隐藏按钮
});

The $() function is used here to convert the obtained <button> object into a jQuery object, and then the hide() method is called to hide the button.

Summary

In jQuery, the object of the click event can be easily obtained through the event handling function. Use the this keyword to get the object, or convert it to a jQuery object and use more methods to operate on it. These techniques are very useful for designing good interactions.

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