ajax提交图片

var form = $(data.form); // form对象
var formData = new FormData(form[0]);
$.ajax({
    url:form.attr('action'),
    type:'post',
    data:formData,
    success:function(res){
        if(res.code == 1){
            location.href=res.msg;
        }else{
            layer.alert(res.msg);
        }
    }
})