const iterable = ['t', 'a', 'e'];for (let value of iterable) { console.log(value); // t a if ( value === 'a') { break; //跳出循环 }}const iterable = ['t', 'a', 'e'];for (let value of iterable) { console.log(value); // t a if ( value === 'a') { break; //跳出循环 }}