如下：var scores = scoreStr.replace(/[:]/g, ";").split(";");
var sum = 0;
for(var i = 1; i < scores.length - 1;){
sum = sum + parseInt(scores[i]);
i = i + 2;
}
document.write("--班級總分為:" + Math.round(sum));
var attime;
function clock(){
var time=new Date();
attime= time.toLocaleTimeString();
document.getElementById("clock").value = attime;
}
var int=setInterval(clock, 1000);
