点击图片显示或隐藏密码案例

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box {
            position: relative;
             400px;
            border-bottom: 1px solid #ccc;
            margin: 100px auto;
        }
        
        .box input {
            border: 0;
            outline: none;
             370px;
            height: 30px;
        }
        
        .box img {
            position: absolute;
            top: 2px;
            right: 2px;
             24px;
        }
    </style>
</head>

<body>
    <div class="box">
        <label for="">
            <img src="images/close.png" alt="" id="eye">
        </label>
        <input type="password" id="pwd">
    </div>


    <script>
        // 1 获取元素 
        var eye = document.getElementById('eye');
        var pwd = document.getElementById('pwd');
        // 切换显示隐藏
        var flag = 0;
        //  2 注册事件 绑定程序
        eye.onclick = function() {
            if (flag == 0) {
                pwd.type = 'text';
                eye.src = 'images/open.png';
                flag = 1;
            } else {
                pwd.type = 'password';
                eye.src = 'images/close.png';
                flag = 0;
            }
        }
    </script>
</body>

</html>
原文地址:https://www.cnblogs.com/ericblog1992/p/13050632.html