摘要：<div onClick="test('yellow')"> CSS Variable</div> CSS :root{ --mainColor:red;} div{ background:black; color:var(--mainColor);} div{ text-align:center; 阅读全文

摘要：var elClock = document.getElementById("clock");var getTime = function(){ var _ = ['00','01','02','03','04','05','06','07','08','09'], d = new Date(), 阅读全文