JavaScript之页面交互_js交互页面是什么意思-优快云博客

本文详细介绍了HTML中的各种事件，包括点击事件、鼠标经过事件、鼠标移出事件、鼠标聚焦事件、失焦事件、文本框内容改变事件、加载事件和卸载事件，并通过实例展示了这些事件的使用方法。

onclick鼠标点击事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <button onclick="show()">点击</button>
    <script>
        function show(){
            alert('onclick');
        }
    </script>
</body>
</html>

onmouseover鼠标经过事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <button onmouseover="show()">鼠标经过</button>
    <script>
        function show(){
            alert('onmouseover');
        }
    </script>
</body>
</html>

onmouseout鼠标移出事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <button onmouseout="show()">鼠标移出</button>
    <script>
        function show(){
            alert('onmouseout');
        }
    </script>
</body>
</html>

onfocus鼠标聚焦事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    鼠标聚焦事件<input onfocus="show()">
    <script>
        function show(){
            alert('onfocus');
        }
    </script>
</body>
</html>

onblur失焦事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    鼠标失焦事件<input onblur="show()">
    <script>
        function show(){
            alert('onblur');
        }
    </script>
</body>
</html>

onchange文本框内容改变事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    鼠标失焦事件<input onchange="show()">
    <script>
        function show(){
            alert('onchange');
        }
    </script>
</body>
</html>

onload加载事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body onload=show()>
    <script>
        function show(){
            alert('onload');
        }
    </script>
</body>
</html>

onunload卸载事件

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
     window.onunload = onunload_msg;   
     function onunload_msg()
      {   
        alert("您确定离开该网页吗？");   
      }   
    </script>
</body>
</html>