读写HTML元素的css 属性-html教程-PHP中文网

jQuery 的css()方法用来设置或读取HTML元素的css属性。

读取元素的CSS语法语法如下：

css(“propertyname“);

比如下面代码取得第一个<p>元素的背景颜色。

[javascript]

$("p").css("background-color");

使用下面的语法来设置HTML元素的CSS属性：

css(“propertyname“,”value“);

例如，下面代码为所有<p>元素设置背景色为黄色。

[html] 
<!DOCTYPE html>  
<html>  
<head>  
    <meta charset="utf-8">  
    <title>JQuery Demo</title>  
    <script src="scripts/jquery-1.9.1.js"></script>  
    <script>  
        $(document).ready(function () {  
            $("button").click(function () {  
                $("p").css("background-color", "yellow");  
            });  
        });  
    </script>  
</head>  
  
<body>  
    <h2>This is a heading</h2>  
    <p style="background-color: #ff0000">This is a paragraph.</p>  
    <p style="background-color: #00ff00">This is a paragraph.</p>  
    <p style="background-color: #0000ff">This is a paragraph.</p>  
    <p>This is a paragraph.</p>  
    <button>Set background-color of p</button>  
</body>  
</html>  
 
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>JQuery Demo</title>
    <script src="scripts/jquery-1.9.1.js"></script>
    <script>
        $(document).ready(function () {
            $("button").click(function () {
                $("p").css("background-color", "yellow");
            });
        });
    </script>
</head>
 
<body>
    <h2>This is a heading</h2>
    <p style="background-color: #ff0000">This is a paragraph.</p>
    <p style="background-color: #00ff00">This is a paragraph.</p>
    <p style="background-color: #0000ff">This is a paragraph.</p>
    <p>This is a paragraph.</p>www.2cto.com
    <button>Set background-color of p</button>
</body>
</html>

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