使用 nodejs 原始标准输入检查输入字符时遇到问题

Question

I can't check for enter character. I tried to use if (key.charCodeAt(0) === 13) console.log('ENTER'); after I saw a same problem with backspace and it works for me, but I could not understand what is wrong with unicode of enter ? because backspace , space and ctrl-c works perfectly. I also tried \ and \ and they also didn't work.

console.clear();

var BACKSPACE = '\u0008';
var CTRL_C = '\u0003';
var ENTER = '\u2386';
var SPACE = '\u0020';

var stdin = process.stdin;

stdin.setEncoding('utf8');

stdin.on('data', (key) => {

    if (key === 'q') process.exit();

    if (key === ENTER) console.log('ENTER');

});

stdin.setRawMode(true);

Answer 1

事实证明，问题是我认为enter键表示为 '\\n' 符号，但是正确的符号是 '\\r'，它的 Unicode 值为 '\ '