Instructions for using the path.join method in node.js_node.js

Method description:

Combine multiple parameters into a path (please see the example for details)

Grammar:

Copy code The code is as follows:

path.join([path1], [path2], [...])

Since this method belongs to the path module, the path module needs to be introduced before use (var path= require(“path”) )

Example:

Copy code The code is as follows:

path.join('/foo', 'bar', 'baz/asdf', 'quux', '..')
// returns
'/foo/bar/baz/asdf'
path.join('foo', {}, 'bar')
// throws exception
TypeError: Arguments to path.join must be strings

Source code:

Copy code The code is as follows:

// windows version
exports.join = function() {
Function f(p) {
If (!util.isString(p)) {
           throw new TypeError('Arguments to path.join must be strings');
        }
Return p;
}

var paths = Array.prototype.filter.call(arguments, f);
var joined = paths.join('\');

// Make sure that the joined path doesn't start with two slashes, because
// normalize() will mistake it for an UNC path then.
//
// This step is skipped when it is very clear that the user actually
// intended to point at an UNC path. This is assumed when the first
// non-empty string arguments starts with exactly two slashes followed by
// at least one more non-slash character.
//
// Note that for normalize() to treat a path as an UNC path it needs to
// have at least 2 components, so we don't filter for that here.
// This means that the user can use join to construct UNC paths from
// a server name and a share name; for example:
// path.join('//server', 'share') -> '\\server\share')
If (!/^[\/]{2}[^\/]/.test(paths[0])) {
Joined = joined.replace(/^[\/]{2,}/, '\');
}

Return exports.normalize(joined);
};