easyUI datebox 日期空间斜杠格式化。例如将日期空间中显示2017-03-13，改为2017/03/13

//日期控件斜杠格式化
function formatDate(date){
if( "" != date ){
var year = date.getFullYear();
var month = date.getMonth()+1;
var day = date.getDate();
if( month < 10 ){
month = '0' + month;
}
if( day < 10 ){
day = '0' + day;
}
return year+'/'+month+'/'+day;
}else{
return "";
}
}