如何在 Javascript 中获取字符串的第一个字符

Use s.charAt(0)

first_char_js_example.js

const s = "banana";
const firstChar = s.charAt(0); // == 'b'
// 这将打印 'b'
console.log(firstChar);

const s = "banana";
const firstChar = s.charAt(0); // == 'b'
// 这将打印 'b'
console.log(firstChar);

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