<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>計(jì)時(shí)器</title><script type="text/javascript">? var int=setInterval(clock, 100)? function clock(){??? var time=new Date();??? document.getElementById("clock").value = time;? }</script></head><body>? <form>??? <input type="text" id="clock" size="50"? />? </form></body></html>中定義的var int=setInterval(clock,100)會(huì)調(diào)用clock函數(shù)，輸出當(dāng)前時(shí)間，其實(shí)完全不用把調(diào)用后的值賦給int變量，也可輸出結(jié)果，寫(xiě)成var int=setInterval(clock,100)，結(jié)果也沒(méi)有輸出int,為什么能夠出現(xiàn)結(jié)果呢
計(jì)時(shí)器setInterval()代碼
wlf1112
2015-11-25 10:27:55
