如何使用FileSystem API的window.requestFileSystem? [英] How to use window.requestFileSystem of FileSystem API?

问题描述

我已经在javascript中编写了以下代码:

I have written below code in javascript:

javascript代码:

javascript code:

var fs=null;

        function initFS() {
            window.requestFileSystem =window.requestFileSystem || window.webkitRequestFileSystem;
               window.requestFileSystem (window.TEMPORARY, 1024 * 1024, function (filesystem) {
                fs = filesystem;
            }, errorHandler);
        }

html代码:

<input type="button"  id="button2" name="click" value="show" onclick="initFS();" />

但在 initFS函数中单击显示按钮后，在 window.requestFileSystem行(window.TEMPORARY，1024 * 1024，函数(文件系统){
它显示错误为未捕获的类型错误".我的代码有什么错误吗?

but after clicking on show button in initFS function, after line window.requestFileSystem (window.TEMPORARY, 1024 * 1024, function (filesystem) {
it is showing error as "uncaught type error". Is there any mistake in my code?

推荐答案

您无法定义errorHandler

You can not define errorHandler

var fs=null; 


        function initFS() {
            window.requestFileSystem =window.requestFileSystem || window.webkitRequestFileSystem;
               window.requestFileSystem(window.TEMPORARY, 1024 * 1024, function (filesystem) {
                fs = filesystem;
                console.log(fs);
            }, errorHandler);
        }
        function errorHandler(e) {
           console.log(e); // it show everything that you want 
          }

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