在js上显示成功或错误

Question

如果插入无效，我怎么能显示错误。我尝试在其他文档中插入。谢谢！的index.php

val dfSchema = df.schema
val filtered = df.rdd.filter(!_.getList[String](2).isEmpty)
sqlContext.createDataFrame(filtered, dfSchema)

Insert.php

$("#sample_editable_1_new").click(function(){
            var a_pos = <?php echo json_encode($this -> a_detalle);?>;
            $.post("insert.php", {
                pos: a_pos, cre: a_cre, cep: a_cep, aa: a_aa
            }, 
            function(htmlexterno){
            });
        });