jquery changes element style

jQuery is a JavaScript library that makes JavaScript writing more concise, readable, and maintainable. In web development, we often need to change the style of elements. This article will demonstrate how to use jQuery to change the style of elements by introducing jQuery's style-related methods.

1. .css() method

In order to change the style of an element, we can use the .css() method. This method can be used to get and set the CSS properties of the element. To set a property we need to pass two parameters: property name and property value. For example:

$(selector).css('property', 'value');

Among them, selector is the selector of the element that needs to be operated; property is the name of the CSS property to be changed, such as "background-color", "font-size", etc.; value is the value to be set. The value of the CSS property.

For example, the following code will change the background color of an element with the id "myDiv" to red:

$('#myDiv').css('background-color', 'red');

2. .addClass() method

If you want to add one or more CSS classes to an element, we can use the .addClass() method.

$(selector).addClass(classname);

Where classname is the name of one or more CSS classes to be added to the element, separated by spaces.

For example, the following code will add a CSS class named "selected" to an element with the id "myDiv":

$('#myDiv').addClass('selected');

3. .removeClass() method

If you want to remove one or more CSS classes from an element, we can use the .removeClass() method.

$(selector).removeClass(classname);

Where classname is the name of one or more CSS classes to be removed from the element, separated by spaces.

For example, the following code will remove the CSS class named "selected" from an element with the id "myDiv":

$('#myDiv').removeClass('selected');

4. .toggleClass() method

If you want to switch whether an element includes a CSS class, we can use the .toggleClass() method.

$(selector).toggleClass(classname);

If the element contains the specified CSS class, the class will be removed from the element. If the specified CSS class is not contained in the element, the class will be added to the element.

For example, the following code will switch whether an element with the id "myDiv" contains the CSS class named "selected":

$('#myDiv').toggleClass('selected');

The above are the main style-related methods, through them, We can flexibly change the style of elements. More jQuery methods can also be viewed in the official documentation.

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