jquery delete css

jQuery is one of the most commonly used front-end development frameworks. It provides great convenience and efficiency for our web development, allowing us to complete some common page effects and interactive animations more quickly. In actual development, we usually need to modify some DOM elements, and one of the common operations is to delete the CSS style of the element. This article will explore how to remove CSS styles from an element with jQuery.

JQuery's CSS() method

In jQuery, the method to modify the CSS style of an element is generally to use the CSS() method. This method is a jQuery object method, which allows us to do it all at once Modify or get one or more CSS properties. The following is the syntax of the CSS() method:

$(selector).css(property,function(index,currentvalue){})

Among them, the parameter property is A CSS property name, which can be a string or an object, used to set or get the CSS style of an element. If we want to set multiple CSS properties at the same time, we can pass in an object, for example:

$('.my-element').css({
  'background-color': 'red',
  'color': 'white',
  'font-size': '20px'
});

This example sets the background color of the .my-element element to red and the font color to white , the font size is 20px. If we only need to get a certain CSS property of this element, we can pass in a string as the property parameter, for example:

var bgColor = $('.my-element').css('background-color');

This example will get the background color of the .my-element element value and stores it in the variable bgColor.

Use the CSS() method to delete the style of an element

We can use the CSS() method to set or get the CSS style of an element, but what if we need to delete a certain style of an element? What to do? At this time, we can delete a certain style of the element by passing null or empty string in the CSS() method. For example, if we want to delete the background color style of the .my-element element, we can write:

$('.my-element').css('background-color', '');

This will change the background color of the .my-element element Color style is deleted. Of course, we can also delete multiple styles by passing in an object, for example:

$('.my-element').css({
  'background-color': '',
  'color': '',
  'font-size': ''
});

This will remove all the background color, font color and font size style of the .my-element element. delete.

In actual development, if we want to delete the specified style of an element, we can use the above methods, and we can also encapsulate them into a function so that we can call it multiple times in the code. The following is a sample code:

function removeStyle(selector, property) {
  $(selector).css(property, '');
}

Through this function, we can call the following code in the code to delete the background color style of an element:

removeStyle('.my-element', 'background-color');

Summary

In jQuery , we can use the CSS() method to modify the CSS style of the element, and delete a certain style of the element by passing in null or an empty string. Although in actual projects we usually use the style override method to modify the style of an element, this method is still very useful when we need to delete the style of an element. It provides us with a simple and effective way to manipulate the style properties of elements.

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