function?count()?{
????var?txt1=document.getElementById('txt1').value;
????var?txt2=document.getElementById('txt2').value;
????var?select=document.getElementById('select').value;
????var?result='';
????switch?(select){
????????case?'+':
????????????result=parseFloat(txt1)+parseFloat(txt2);
????????????break;
????????case?'-':
????????????result=parseFloat(txt1)-parseFloat(txt2);
????????????break;
????????case?'*':
????????????result=parseFloat(txt1)*parseFloat(txt2);
????????????break;
????????case?'/';
????????????result=parseFloat(txt1)/parseFloat(txt2);
????}
????document.getElementById('fruit').value?=?result;
}
幫忙看下哪里出錯(cuò)了,計(jì)算器的
白馬非馬609
2016-10-20 16:23:23
