如何使用javascript读取/写入文本文件？
[英]How to read and write from/into text file using javascript?
问题描述
Do any one have a sample code of how to read and write from/into text file using javascript 
是否有人拥有使用javascript读取/写入文本文件的示例代码
What i tried is like created a iframe and load text file into it from iframe i read the content and using string operation make some changes, and i have no idea how to write back to text file. 我尝试过的操作就像创建一个iframe并从iframe中将文本文件加载到其中一样，我读取了内容并使用字符串操作进行了一些更改，并且我不知道如何写回文本文件。 and also on ie browser this code is not working. 而且在浏览器上，此代码不起作用。
My text.txt file contain First line second Line Third Line Fourth Line 我的text.txt文件包含第一行第二行第三行第四行
<html>
<head>
<title></title>
</head>
<body>
<script language="JavaScript" type="text/javascript">
<!--
var srcFrame;
function loadOuter(doc) {
srcFrame = document.getElementById("hiddenContent");
srcFrame.src = doc;
transferHTML();
}
function transferHTML(){
srcContent='';
if (srcFrame.contentDocument){
alert("document");
srcContent=srcFrame.contentDocument.getElementsByTagName("BODY")[0].innerHTML;
}
else if (srcFrame.contentWindow){
alert("window");
srcContent=srcFrame.contentWindow.document.body.innerHTML;
}
srcContent.length;
alert(" before push "+srcContent);
var arrayText="Last Line";
var lines = srcContent.split('\n');
lines=lines.slice(0, -1);
lines.push(arrayText,"</pre>");
lines = lines.join('\n');
srcContent=lines;
alert(srcContent);
document.getElementById("outerDisplay").innerHTML = srcContent;
}
</script>
<INPUT TYPE="button" VALUE="Test.txt" onClick="loadOuter('Test.txt')" >
<div id="outerDisplay"></div>
<iframe id="hiddenContent" width="200" height="200" style="position:absolute;visibility:hidden;" ></iframe>
</body>
</html>
2 个解决方案
解决方案1
1 已采纳 2012-02-23 10:31:06
In IE this is possible using ActiveXObject and HTA. 在IE中，可以使用ActiveXObject和HTA。 These, however, are recommended to use local only, not in the WEB. 但是，建议这些仅在本地使用，而不在WEB中使用。 Look at: http://msdn.microsoft.com/en-us/library/ms536471%28v=vs.85%29.aspx 查看： http : //msdn.microsoft.com/en-us/library/ms536471%28v=vs.85%29.aspx
More info for file operations: http://msdn.microsoft.com/en-us/library/bstcxhf7%28v=vs.84%29.aspx 有关文件操作的更多信息： http : //msdn.microsoft.com/zh-cn/library/bstcxhf7%28v=vs.84%29.aspx
Basic functions below: 基本功能如下：
ActiveXObject definition: ActiveXObject定义：
fso=new ActiveXObject('Scripting.FileSystemObject');
Reading file: 读取文件：
iStream=fso.OpenTextFile('filePath',1,false);
iStream.ReadAll();
/* or looped iStream.ReadLine() */
iStream.Close();
Writing file: 写入文件：
oStream=fso.OpenTextFile('filePath',2,true);
oStream.WriteLine(/*your_data*/);// This usually is looped according to your data
oStream.Close();
fso -object can also be used in regular HTM-page, but you're asked to accept use of the ActiveXObject very often. fso -object也可以在常规的HTM页中使用，但是经常会要求您接受对ActiveXObject的使用。
解决方案2
0 2012-02-23 11:07:45
如果您在谈论本地文件系统，那么“ HTML5是否允许您从浏览器内部与本地客户端文件进行交互”中涵盖了您的选项。
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