Home Web Front-end Front-end Q&A How to get the css of div with jquery

How to get the css of div with jquery

May 23, 2023 pm 03:23 PM

In front-end development, it is often used to obtain the CSS style of DOM elements. jQuery is a popular JavaScript library that provides many methods to easily obtain and modify CSS styles of DOM elements. This article will introduce how to use jQuery to obtain the CSS style of a div.

1. Use the .css() method to get the CSS style of the div

One of the core functions of jQuery is to set and get the CSS style. The .css() method is used to get or set the style attributes of an element. Through this method, you can get the style attributes of the div. For example, to get the background color of a div, you can use the following code:

var bgColor = $('div').css('background-color');
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In this way, you can get the background color of the div and store it in the variable bgColor. The

.css() method can also obtain multiple CSS properties at the same time, for example:

var divStyles = $('div').css(['background-color', 'font-size', 'color']);
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In this way, the background color, font size, font color and other style attributes can be obtained at once. and stored in an object.

2. Use the .attr() method to obtain the CSS style of the div

In addition to the .css() method, jQuery also provides the .attr() method to obtain the attributes of an element. The CSS style can also be regarded as an attribute of the element, so you can also use the .attr() method to obtain the CSS attribute of the div. For example:

var bgColor = $('div').attr('style');
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This way you can get all the CSS style attributes of the div and store them in the variable bgColor. It should be noted that the CSS style attributes obtained in this way are returned in the form of strings.

3. Use the .getComputedStyle() method to get the CSS style of the div

In some advanced browsers, you can also use the native JavaScript method getComputedStyle() to get the CSS style attributes of the div. value, and this method can also be called through jQuery. For example:

var bgColor = window.getComputedStyle($('div')[0]).getPropertyValue('background-color');
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This way you can get the background color of the div and store it in the variable bgColor. It should be noted that the window.getComputedStyle() method returns an object, not a string or number. And in this method, the div element should exist and be visible. If this element or the document it is in is not visible or rendered, the style attributes obtained may be incorrect or incomplete.

To sum up, it is not difficult to use jQuery to obtain the CSS style properties of a div. Whether you use the .css() method, the .attr() method, or the native JavaScript getComputedStyel() method, you can get the CSS style attributes of the div. These methods allow us to easily obtain the CSS properties of the required elements, which facilitates development and debugging.

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