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Explore jQuery's CSS methods and their usage

PHPz

Release： 2023-04-23 13:45:27

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jQuery is a popular JavaScript library that has become very popular and widely used. Among them, jQuery's CSS method is used to set the CSS properties of the element. In this article, we will explore jQuery’s CSS methods and their usage.

1. jQuery’s CSS method

jQuery’s CSS method is one of many jQuery methods that allows you to programmatically change the style of an element. The syntax is as follows:

$(selector).css(property,value)

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where selector is the selector of the element you want to change the style, property is the name of the CSS property you want to change, value is the attribute value to be set. You can use a string of CSS property names to change the property value within it.

Note: When using the CSS method, please use camelCase format for CSS property names.

2. Set the CSS properties of elements

jQuery’s CSS method allows you to change the CSS properties of any element in the web page. For example, if you want to change the background color of element div to red, you can use the following code:

$("div").css("background-color", "red");

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This code will change the background color property of selector div is red.

3. Set multiple CSS properties

You can use the CSS method to set any number of CSS properties. For example, if you want to change both the background color and font size of element h1, you can use the following code:

$("h1").css({
    "background-color" : "blue",
    "font-size" : "24px"
});

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This code will change both the selector h1 The background color is blue and the font size is 24 pixels.

4. Use CSS methods to get CSS properties

You can use CSS methods to get CSS properties of elements. For example, if you want to get the color attribute of element h1, you can use the following code:

$("h1").css("color");

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This code will return the h1 Color properties.

5. Example Application

The following is an example of how to switch between changing properties and getting properties:

<!DOCTYPE html>
<html>
<head>
    <title>jQuery的CSS方法</title>
    <meta charset="utf-8">
    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
    <style>
        h1 {
            color: blue;
            font-size: 20px;
            text-align: center;
        }
    </style>
</head>
<body>
    <h1>测试jQuery的CSS方法</h1>
    <script>
        //设置样式属性的值
        $("h1").css("color", "red");
        
        //获取属性的值
        var fontSize = $("h1").css("font-size");
        
        //打印属性的值到控制台
        console.log(fontSize);
        
        //设置多个样式属性的值
        $("h1").css({
            "font-size": "24px",
            "text-align": "left"
        });
    </script>
</body>
</html>

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In this example, we first use the CSS method Change the color property of heading h1 to red. Next, we use the CSS method to get the font size attribute of h1 and print it to the console. Finally, we use CSS methods to change the font size and text alignment properties of the title h1 to the new values.

6. Summary

jQuery’s CSS method is a method that allows you to programmatically change the style of an element. It allows you to change one or more CSS properties at the same time and also get the CSS properties of an element. In the process of web development, using jQuery's CSS method will bring you great convenience and flexibility.

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