Modify the background image in jquery

jQuery is a very popular JavaScript library that allows us to manipulate DOM elements more easily, including modifying the CSS properties of elements. In this article, we will discuss how to modify a background image using jQuery.

First, we need to select the element whose background image we want to modify. This can be achieved using jQuery's selectors. For example, if we want to modify the background image of the element with the ID "myDiv", we can use the following code:

$("#myDiv").css("background-image", "url('path/to/image.jpg')");

Here, we use the $ function to select the element with the ID "myDiv" " element and use the .css() function to modify its CSS properties. We set "background-image" to our desired image path. Note that we need to enclose the path in quotes and use URL functions to instruct the CSS to reach the path.

If we want to set the background image to none, we can set the path parameter to an empty string. For example:

$("#myDiv").css("background-image", "");

If we want to apply the same background image on multiple elements, we can use the same selector to select these elements and set their CSS properties to the same value, for example:

$(".myClass").css("background-image", "url('path/to/image.jpg')");

Here, we use the .myClass class selector to select multiple elements and set their background images to the same path.

There is another way to achieve the same effect, which is to use CSS classes. In the CSS file, we can define a .bg-image class and set it to the desired background image like this:

.bg-image {
  background-image: url('path/to/image.jpg');
}

Then, use jQuery in the page Add this class for the required element, for example:

$("#myDiv").addClass("bg-image");

Here we have added .bg- image class. This causes a CSS rule to be applied to the element, modifying its background image to the desired image. Note that adding style classes can be repeated. Therefore, if you want to change the background image, please delete the previous

class first and then add the new one. The implementation code is as follows:

$("#myDiv").removeClass("bg-image"); // 去除旧的样式类
$("#myDiv").addClass("new-bg-image"); // 添加新的样式类