Method description:
Sync disk cache.
Grammar:
fs.fsync(fd, [callback(err)])
Since this method belongs to the fs module, the fs module needs to be introduced before use (var fs= require(“fs”) )
Receive parameters:
fd File descriptor
callback Callback, passing an exception parameter err
Example:
var fs = require('fs');
fs.open('content.txt', 'a', function(err,fd){
if(err){
throw err;
}
console.log('file open');
fs.fsync(fd, function(err){
if(err){
throw err;
}
console.log('done');
fs.close(fd,function(err){
if(err){
Throw err;
}
console.log('file closed');
})
})
})
Source code:
fs.fsync(fd, callback)fs.fsync = function(fd, callback) {
binding.fsync(fd, makeCallback(callback));
};
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