Javascript window.requestFileSystem 不工作
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window.requestFileSystem not working
提问by Tony2
I am trying on Firefox,IE 9,Chrome and Opera the code below ,but the onInitFs(fs) function doesn't get called.if I add '()' to onInitFs in the window.requestFileSystem(window.PERSISTENT, 1024*1024, onInitFs, errorHandler) that function get called but fs is null ? Does anybody know how to solve this problem?I try on windows 7.I'll appreciate very much your help.
我正在 Firefox、IE 9、Chrome 和 Opera 上尝试下面的代码，但是没有调用 onInitFs(fs) 函数。如果我在 window.requestFileSystem(window.PERSISTENT, 1024*) 中将 '()' 添加到 onInitFs 1024, onInitFs, errorHandler) 该函数被调用但 fs 为空？有人知道如何解决这个问题吗？我在 Windows 7 上试过。非常感谢您的帮助。
<!DOCTYPE HTML>
`<html>
<head>
<script>
function errorHandler(e){
alert("errorrrr");
}
function onInitFs(fs){
alert("onInitFs");
}
function readClick(){
if (window.webkitRequestFileSystem) {
window.webkitRequestFileSystem(window.PERSISTENT, 1024*1024,onInitFs,errorHandler);
}
else {
window.requestFileSystem(window.PERSISTENT, 1024*1024, onInitFs, errorHandler);
}
alert("read finishsssss");
}
</script>
</head>
<body>
<input type="button" value="Read dir" onclick="readClick()">
<ul id="filelist"></ul>
</body>
</html>
回答by Raynos
Only chrome supports requestFileSystemas the webkitRequestFileSystemversion.
仅支持 chromerequestFileSystem作为webkitRequestFileSystem版本。
None of the other browsers (FF6, IE9, Op11) support this
其他浏览器（FF6、IE9、Op11）都不支持这个
回答by Marvin Emil Brach
Disregarding the security issue that you cannot "browse" local files with a website, your question should be answered:
不考虑您无法通过网站“浏览”本地文件的安全问题，您的问题应该得到回答：
When requesting a PERSISTENT filesystem you have to request a quota in first. Try that instead:
请求持久性文件系统时，您必须首先请求配额。试试这个：
window.storageInfo.requestQuota(PERSISTENT, 1024*1024,
function(grantedBytes) {
window.requestFileSystem(window.PERSISTENT, grantedBytes, onInitFs, errorHandler);
},
errorHandler
);
