$(document).ready(function() {
var span0s=$(".span0");
var span0="";
for(i=0;i<span0s.length;i++){
span0=span0s.text();
if(span0==""){
span0s[i].text("0"); }
}
})
var span0s=$(".span0");
var span0="";
for(i=0;i<span0s.length;i++){
span0=span0s.text();
if(span0==""){
span0s[i].text("0"); }
}
})
换成
$(span0s[i]).text("0");