JavaScript中的sessionStorage

àì夳堔傛蜴生んèń 2024-03-31 16:07 30阅读 0赞

## JavaScript中的sessionStorage ##

该文章需要联系这篇文章学习：[JavaScript中的localStorage  
][JavaScript_localStorage]

**案例池子**：  
[JS实现鼠标悬停变色  
][JS_]  
[JavaScript中的排他算法实现按钮单选][JavaScript]  
[JavaScript中的localStorage  
][JavaScript_localStorage]  
[JavaScript中的sessionStorage  
][JavaScript_sessionStorage]  
[JavaScript实现网页关灯效果][JavaScript 1]  
[JavaScript实现一段时间之后关闭广告  
][JavaScript_]  
[JavaScript实现按键快速获取输入框光标  
][JavaScript_ 1]

### 效果演示 ###

![在这里插入图片描述][e9699d54da784bb7b6aeee1ec51307cb.png]  
![在这里插入图片描述][9639ce3899584d7c8ad883ecf352b95f.png]  
![在这里插入图片描述][4e1eb3126ec945f192456b3571b83778.png]  
![在这里插入图片描述][77bdc28e2aef4b009f57e13027af75d5.png]

### 概述 ###

![在这里插入图片描述][ebd042bc9f3748b9b27b97cc9be1117f.png]  
简介：sessionStroage是JavaScript中的，在浏览器中存储数据的一个API，我们通过一个例子演示他的使用方法，它与localStorage的区别在于，localStorage是永久性质的存储，而且localStorage存储的内容是可以被多个页面共享的。

### 演示代码 ###

<!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>
        <input type="text">
        <button class="set">存储数据</button>
        <button class="get">获取数据</button>
        <button class="remove">删除数据</button>
        <button class="del">清空所有数据</button>
        <script>
            console.log(localStorage.getItem('username'));
    
            var ipt = document.querySelector('input');
            var set = document.querySelector('.set');
            var get = document.querySelector('.get');
            var remove = document.querySelector('.remove');
            var del = document.querySelector('.del');
            set.addEventListener('click', function() {
          
                // 当我们点击了之后，就可以把表单里面的值存储起来
                var val = ipt.value;
                sessionStorage.setItem('uname', val);
                sessionStorage.setItem('pwd', val);
            });
            get.addEventListener('click', function() {
          
                // 当我们点击了之后，就可以把表单里面的值获取过来
                console.log(sessionStorage.getItem('uname'));
    
            });
            remove.addEventListener('click', function() {
          
                // 根据Item名称产生session中存储的数据
                sessionStorage.removeItem('uname');
    
            });
            del.addEventListener('click', function() {
          
                // 当我们点击了之后，清除所有的
                sessionStorage.clear();
    
            });
        </script>
    </body>
    
    </html>

[JavaScript_localStorage]: https://blog.csdn.net/qq_51447496/article/details/128224131
[JS_]: https://blog.csdn.net/qq_51447496/article/details/128223527
[JavaScript]: https://blog.csdn.net/qq_51447496/article/details/128224547
[JavaScript_sessionStorage]: https://blog.csdn.net/qq_51447496/article/details/128223971
[JavaScript 1]: https://blog.csdn.net/qq_51447496/article/details/128226136
[JavaScript_]: https://blog.csdn.net/qq_51447496/article/details/128226463
[JavaScript_ 1]: https://blog.csdn.net/qq_51447496/article/details/128227052
[e9699d54da784bb7b6aeee1ec51307cb.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/a54f0871e3944bd0aa57c727f8792ed4.png
[9639ce3899584d7c8ad883ecf352b95f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/ad81eba5043642d189237791da0df646.png
[4e1eb3126ec945f192456b3571b83778.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/a29406714c444a79a86379625a84648b.png
[77bdc28e2aef4b009f57e13027af75d5.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/fdd20f48b4a64e42af493195ba8816b7.png
[ebd042bc9f3748b9b27b97cc9be1117f.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/b5fdacefe36041758cb4fa2b5ec98066.png