jQuery mouseover()方法

jQuery mouseover()方法是一个内置的方法，当鼠标指针移动到选定的元素上时，它就会发挥作用。

语法:

$(selector).mouseover(function)

参数：该方法接受单参数函数，这是可选的。该参数用于指定当鼠标移动事件被调用时要运行的函数。

例子1：这个例子说明了mouseover()方法的使用。

<!DOCTYPE html>
<html>
  
<head>
    <title>The mouseover Method</title>
    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
    </script>
  
    <!-- jQuery code to show the working of this method -->
    <script>
         $(document).ready(function () {$ ("p").mouseover(function () {
                $("p").css("background-color", "lightgreen");
            });
        });
    </script>
    <style>
        body {
            width: 280px;
            padding: 40px;
            height: 30px;
            border: 2px solid green;
            font-weight: bold;
            font-size: 20px;
        }
    </style>
</head>
  
<body>
    <!-- move over this text to see the change -->
    <p>Welcome to GeeksforGeeks!</p>
</body>
  
</html>

输出:

jQuery mouseover()方法

例子2：在这个例子中，当鼠标移到该段上时，会有一个弹出窗口。

<!DOCTYPE html>
<html>
  
<head>
    <title>The mouseover Method</title>
    <script src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
    </script>
  
    <!-- jQuery code to show the working of this method -->
    <script>
         $(document).ready(function () {$ ("p").mouseover(function () {
                alert("Mouse moved over this paragraph");
            });
        });
    </script>
    <style>
        body {
            width: 280px;
            padding: 40px;
            height: 30px;
            border: 2px solid green;
            font-weight: bold;
            font-size: 20px;
        }
    </style>
</head>
  
<body>
    <!-- move over this text and pop-up will come out -->
    <p>Welcome to GeeksforGeeks!</p>
</body>
  
</html>

输出:

jQuery mouseover()方法