if string begins with code example
Example: check if js string begin with word
const str1 = 'Saturday night plans';
console.log(str1.startsWith('Sat'));
// expected output: true
console.log(str1.startsWith('Sat', 3));
// expected output: falseconst str1 = 'Saturday night plans';
console.log(str1.startsWith('Sat'));
// expected output: true
console.log(str1.startsWith('Sat', 3));
// expected output: false