clearInterval clearinterval函數(shù) clearInterval和timer = null的區(qū)別？首先，clearinterval（計(jì)時(shí)器）僅用于停止計(jì)時(shí)器，但計(jì)時(shí)器對(duì)象本身仍然存在。timer的值是一個(gè)I... 2021-03-12 2227次瀏覽
