84669 person learning
152542 person learning
20005 person learning
5487 person learning
7821 person learning
359900 person learning
3350 person learning
180660 person learning
48569 person learning
18603 person learning
40936 person learning
1549 person learning
1183 person learning
32909 person learning
var fs = require('fs') fs.open('../src/urls.js', 'w+', function(err, fd) { fs.write(fd, 'const DEV = false\r\n', 0, function(err, bytes) { }) })
这段代码在执行时为什么会提示TypeError:First argument must be file descriptor,明明fd就是open传过来的descriptor啊?求解
TypeError:First argument must be file descriptor
小伙看你根骨奇佳,潜力无限,来学PHP伐。
判断一下是不是打开失败了,如果打开失败,fd肯定就不是文件描述符了
var fs = require('fs') fs.open('../src/urls.js', 'w+', function(err, fd) { if(err!==null){ console.error(err); return; } fs.write(fd, 'const DEV = false\r\n', 0, function(err, bytes) { if(err!==null){ console.error(err); return; } }); })
判断一下是不是打开失败了,如果打开失败,fd肯定就不是文件描述符了