const animal=["강아지","고양이","기린","호랑이"];

document.write('const animal : ');

document.write('[','"강아지","고양이","기린","호랑이"',']');

document.write('<br>');

​

const joinAni=animal.join()

document.write('animal.join() : ');

document.write(joinAni);

document.write('<br>');

​

const joinAni2=animal.join('-')

document.write('animal.join("-") : ');

document.write(joinAni2);

document.write('<br>');

​

const joinAni3=animal.join('❤️💛💙')

document.write('animal.join("❤️💛💙") : ');

document.write(joinAni3);

document.write('<br>');