第1个回答 2017-03-07
$("#id").on("click",function(){
var grade = parseInt($("inputid").val());
if(grade>=90&&grade<=100){
alert("优");
}else
if(grade>=80&&grade<=89){
alert("良");
}else
if(grade>=70&&grade<=79){
alert("中");
}
else
if(grade>=60&&grade<=69){
alert("及格");
}
else
{
alert("差");
}
});本回答被提问者和网友采纳