javascript export data to Excel (processing elements in table)

function resetInput()
{
var controls = ('input');
for(var i=0; i<; i++){
if(controls[i].type=='text')
{
if(controls[i].value =="")
{
controls[i].outerHTML="&nbsp";
}
else
{
controls[i].outerHTML=controls[i].value;
}
}
}
}