HTML DOM localStorage 属性
HTML DOM localStorage 属性让用户能够在本地浏览器中存储键值对以供将来参考。在明确删除/清除之前,键值对不会丢失。
语法
以下为语法 −
Window.localStorage
在此,localStorage 可以具有以下属性/方法 −
- setItem(‘key’,’value’)
- getItem(‘key’)
- removeItem(‘key’)
让我们来看一个localStorage 属性示例 −
示例
<!DOCTYPE html> <html> <head> <title>LocalStorage clear()</title> <style> form { width:70%; margin: 0 auto; text-align: center; } * { padding: 2px; margin:5px; } input[type="button"] { border-radius: 10px; } table,th,td { border:1px solid black; border-collapse: collapse; margin: 0 auto; } </style> </head> <body> <form> <fieldset> <legend>LocalStorage clear( )</legend> <table> <tr> <th>Key</th> <th>Value</th> </tr> <tr> <td>PassKey</td> <td>ja12ertplo</td> </tr> </table> <input type="button" value="Store Key" onclick="storeData()"> <input type="button" value="Delete Key" onclick="clearData()"> <div id="divDisplay"></div> </fieldset> </form> <script> var divDisplay = document.getElementById("divDisplay"); var extStyle = document.getElementById("extStyle"); function clearData(){ localStorage.clear(); divDisplay.textContent = 'Succesfully Deleted'; } function storeData(){ localStorage.setItem('PassKey','ja12ertplo'); divDisplay.textContent = 'Succesfully Stored'; } </script> </body> </html>
输出
点击‘Store Key’按钮后 −
点击‘Delete Key’按钮后 −
广告