javascript编译color<br>.s1{font-size:100pxfont}<br><br><br>function displaytime(){<br> var time=new Date()<br> var sec=time.getSeconds()<br> document.getElementById(clock).innerHTML=sec<br> if(sec>0 && sec<=20){<br>document.body.style.backgroundColor=red<br> }<br> else if(sec>20 && sec<=40){<br>document.body.style.backgroundColor=blue<br> }<br> else {<br>document.body.style.backgroundColor=yellow<br> }<br>}<br>setInterval(displaytime(),1000)<br><br></head><br><body><br><div id=clock align=center class=s1></div><br></body><br></html></p>
