JavaScript中的localStorage

谁借莪１个温暖的怀抱￠ 2024-03-31 16:07 57阅读 0赞

## JavaScript中的localStorage ##

参考这篇文章一起学习：[JavaScript中的session][JavaScript_session]

**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]

### 效果展示 ###

![在这里插入图片描述][da934764b1724e99807f9ba3d057d801.png]

### 概述 ###

![在这里插入图片描述][6277eb3cfacd4a918ed2aa83acd9e6c5.png]

简介：localStroage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sessionStorage的区别在于，sessionStorage的声明周期是页面没有关闭，而且sessionStorage是只能单页面使用。

### 学习代码 ###

<!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>
            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() {
          
                var val = ipt.value;
                localStorage.setItem('username', val);
            })
            get.addEventListener('click', function() {
          
                console.log(localStorage.getItem('username'));
    
            })
            remove.addEventListener('click', function() {
          
                localStorage.removeItem('username');
    
            })  
            del.addEventListener('click', function() {
          
                localStorage.clear();
    
            })
        </script>
    </body>
    
    </html>

[JavaScript_session]: https://blog.csdn.net/qq_51447496/article/details/128223971?csdn_share_tail=%7B%22type%22:%22blog%22,%22rType%22:%22article%22,%22rId%22:%22128223971%22,%22source%22:%22qq_51447496%22%7D
[JS_]: https://blog.csdn.net/qq_51447496/article/details/128223527
[JavaScript]: https://blog.csdn.net/qq_51447496/article/details/128224547
[JavaScript_localStorage]: https://blog.csdn.net/qq_51447496/article/details/128224131
[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
[da934764b1724e99807f9ba3d057d801.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/7a2e70d49c2b4eae8c69a3e4ed6b6800.png
[6277eb3cfacd4a918ed2aa83acd9e6c5.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/31/e7fa802e6c994d769f69f6be1ceb2686.png