PHP + jQuery - 未定义索引 : , 但它仍然成功发布？

Question

向数据库插入记录时，服务器返回“ undefined index :类别”错误，但仍然发布成功。

   $('#button').click(function(){
    var newvendor    = $('#input_vendor').val();
        newplantcode = $('#input_plantcode').val();
        newcategory  = $('#input_category').val();

$.post("php/addSite.php",
    {vendor: newvendor, 
     plant_code: newplantcode, 
     category: newcategory}, // <--- Error on this line, for some reason...


     function(result){
            console.log("server returned : " + result);
            [ RELOAD THE PAGE ]
     }

Answer 1

您几乎所有代码中都缺少引号:

   $('#button').click(function(){
var newvendor    = $('#input_vendor').val();
var newplantcode = $('#input_plantcode').val();
var newcategory  = $('#input_category').val();

$.post("php/addSite.php",
{vendor: newvendor, 
 plant_code: newplantcode, 
category: newcategory}, // <--- Error on this line, for some reason...


 function(result){
        console.log("server returned : " + result);
        [ RELOAD THE PAGE ]
 }
 //closing the post function
 )
 //closing the click event 
 });

现在再试一次