JavaScript 문자열 startsWith()

1 개요

JavaScript startsWith()

자바스크립트 startsWith()

var str = "Hello world!";
console.log( str.startsWith("Hello") ); // true
console.log( str.startsWith("He") ); // true
console.log( str.startsWith("ll") ); // false
console.log( str.startsWith("ll", 2) ); // true

const str1 = 'Saturday night plans';
console.log(str1.startsWith('Sat')); // true
console.log(str1.startsWith('Sat', 3)); // false

const str = "To be, or not to be, that is the question.";
console.log(str.startsWith("To be")); // true
console.log(str.startsWith("not to be")); // false
console.log(str.startsWith("not to be", 10)); // true

2 같이 보기

• JavaScript 문자열
• JavaScript 문자열 endsWith()
• JavaScript 문자열 includes()
• JavaScript 문자열 indexOf()
• JavaScript 문자열 lastIndexOf()
• 함수 startsWith()

3 참고

• https://www.w3schools.com/jsref/jsref_startswith.asp
• https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith