是否有一种方法，我可以得到的最后一个值(基于'\'符号)从一个完整的路径?
例子:
C:\Documents and Settings\img\recycled log.jpg
在这种情况下，我只想从JavaScript的完整路径中回收log.jpg。
当前回答
下面这行JavaScript代码将提供文件名。
var z = location.pathname.substring(location.pathname.lastIndexOf('/')+1);
alert(z);
其他回答
完整的答案是:
<html>
<head>
<title>Testing File Upload Inputs</title>
<script type="text/javascript">
function replaceAll(txt, replace, with_this) {
return txt.replace(new RegExp(replace, 'g'),with_this);
}
function showSrc() {
document.getElementById("myframe").href = document.getElementById("myfile").value;
var theexa = document.getElementById("myframe").href.replace("file:///","");
var path = document.getElementById("myframe").href.replace("file:///","");
var correctPath = replaceAll(path,"%20"," ");
alert(correctPath);
}
</script>
</head>
<body>
<form method="get" action="#" >
<input type="file"
id="myfile"
onChange="javascript:showSrc();"
size="30">
<br>
<a href="#" id="myframe"></a>
</form>
</body>
</html>
var filename = fullPath.replace(/^.*[\\\/]/, '')
这将处理两个\ OR / in路径
这个解决方案对'fileName'和'path'都更简单和通用。
parsePath = (path) => {
// regex to split path (untile last / or \ to two groups '(.*[\\\/])' for path and '(.*)' (untile the end after the \ or / )for file name
const regexPath = /^(?<path>(.*[\\\/])?)(?<filename>.*)$/;
const match = regexPath.exec(path);
if (path && match) {
return {
path: match.groups.path,
filename: match.groups.filename
}
}
throw Error("Error parsing path");
}
// example
const str = 'C:\\Documents and Settings\\img\\recycled log.jpg';
parsePath(str);
在Node.js中，你可以使用Path的解析模块…
var path = require('path');
var file = '/home/user/dir/file.txt';
var filename = path.parse(file).base;
//=> 'file.txt'
下面这行JavaScript代码将提供文件名。
var z = location.pathname.substring(location.pathname.lastIndexOf('/')+1);
alert(z);
