Node.js的错误有以下几种:
Node.js
eval error
syntax error
range error
reference error
type error
uri error
try { const a = 1 const c = a + b } catch (err) { console.log(err) }
以上代码输出ReferenceError:b is not defined
ReferenceError:b is not defined
const fs = require('fs') function nodeStyleCallback(err, data) { if (err) { console.error('There was an error', err) return } console.log(data) } fs.readFile('/some/file/that/does-not-exist', nodeStyleCallback) fs.readFile('/some/file/that/does-exist', nodeStyleCallback)