javascript - chrome临时存储未重置

查找Storage后，我想尝试重置临时存储以进行测试。

window.webkitStorageInfo.requestQuota(webkitStorageInfo.TEMPORARY, 5*1024*1024,
    function( bytes ) {
        console.log( "Quota is available: " + bytes );
    },
    function( e ) {
        console.log( "Error allocating quota: " + e );
    });

window.webkitStorageInfo.queryUsageAndQuota(webkitStorageInfo.TEMPORARY,
    //the type can be either TEMPORARY or PERSISTENT
    function(used, remaining) {
        console.log("Used quota: " + used + ", current quota: " + remaining);
    }, function(e) {
         console.log('Error', e);
    });

requestQuota（）设置临时存储大小，queryUsageAndQuota（）告诉我当前的配额是多少。但是，尽管设置了新的配额，但在chrome浏览器中查看控制台日志时，它却没有反映在queryUsageAndQuota()中。我看起来像：

Quota is available: 5242880
Used quota: 0, current quota: 214748364

即使我期望可用的数量和当前的配额相同。这是为什么？

最佳答案

比较这两个输出

代码1

window.webkitStorageInfo.requestQuota(webkitStorageInfo.TEMPORARY,
             5188955171*1024*1024,
    function( bytes ) {
        console.log( "Quota is available: " + bytes );
    },
    function( e ) {
        console.log( "Error allocating quota: " + e );
    });

window.webkitStorageInfo.queryUsageAndQuota(webkitStorageInfo.TEMPORARY,
    //the type can be either TEMPORARY or PERSISTENT
    function(used, remaining) {
        console.log("Used quota: " + used + ", current quota: " + remaining);
    }, function(e) {
         console.log('Error', e);
    });

输出1

Quota is available: 5188982205
Used quota: 492, current quota: 5188982205

代码2

window.webkitStorageInfo.requestQuota(webkitStorageInfo.TEMPORARY, 5*1024*1024,
    function( bytes ) {
        console.log( "Quota is available: " + bytes );
    },
    function( e ) {
        console.log( "Error allocating quota: " + e );
    });
window.webkitStorageInfo.queryUsageAndQuota(webkitStorageInfo.TEMPORARY,
    //the type can be either TEMPORARY or PERSISTENT
    function(used, remaining) {
        console.log("Used quota: " + used + ", current quota: " + remaining);
    }, function(e) {
         console.log('Error', e);
    });

输出2

Quota is available: 5242880
Used quota: 0, current quota: 214748364

在您的情况下，您请求的是次要配额5242880，该配额已经可用并且少于可用数量，因此它返回一个successCallback，其中请求了配额！通过请求大量来重置配额！

window.webkitStorageInfo.requestQuota用于请求更多的可用存储空间，Chrome如何自动为您的应用提供临时存储，因此您不需要请求分配（最多共享池的20％）

参考文献


Storage