javascript - 如何将javascript函数中的值POSTinput到另一个php页面以将它们保存到数据库中

Question

这是我在单击添加按钮时在表中添加动态行的代码。现在我需要获取输入到文本框中的值并提交给数据库。

<div id="addinput">
    <p>
    <button name="add" onclick="myFunction(this)" value="'.$btn_count.'"><font color="#FF0000" size="4">+</font></button>
    </p>
    </div>
    </td>

这是我向表格添加动态行的功能，就在我们点击的行下方

<script>
function myFunction(y)
{

var f = y.parentNode;
var d = f.parentNode;
var g = d.parentNode;
var c =g.parentNode.rowIndex;   


var table = document.getElementById("myTable");

var row = table.insertRow(c+1);


var cell1 = row.insertCell(0);
var cell2 = row.insertCell(1);
var cell3 = row.insertCell(2);
var cell4 = row.insertCell(3);
var cell5 = row.insertCell(4);
var cell6 = row.insertCell(5);
var cell7 = row.insertCell(6);

cell1.innerHTML = "<form name='frm_sub' id='frm_id' action='#'><input type=text  name='txt_id' id='id_id' size=10 placeholder=Id>";
cell2.innerHTML = "<input type=text name='txt_item' id='id_item' size=10 placeholder=Item>";
cell3.innerHTML = "<input type=text name='txt_cost' id='id_cost' size=10 placeholder=0.00>";
cell4.innerHTML = "<input type=text name='txt_wp' id='id_wp' size=10 placeholder=0.00>";
cell5.innerHTML = "<input type=text name='txt_rp' id='id_rp' size=10 placeholder=0.00>";

cell6.innerHTML = "<input type='button' name='submit' id='id_submitBtn' value='Save' size=10 onclick='form_submit()' ></form>";


document.getElementById("myTable");

function form_submit()
{


var item_name = $("input#id_item").val();

var cost = $("input#id_cost").val();

var wp = $("input#id_wp").val();

var rp = $("input#id_rp").val();

var dataString = 'item_name='+ item_name + '&cost=' + cost + '&wp=' + wp+ '&rp=' + rp;

alert(dataString);



$.ajax({

        type: "POST",
        url:newAdd.php,
        dataType: "json",
        type: "POST",
        data: {

            items : $("#id_item").val(),           
            cost : $("#id_cost").val(),
            wp : $("#id_wp").val(),
            rp : $("#id_rp").val(),
        },
        success: function () {
            alert("Success");
        }
    });



}

在我写的 newAdd.php 中

echo$itemName =$_POST["txt_item"];
$insert = mysql_query('INSERT INTO item (item) VALUES ('$itemName');

但这行不通..

Answer 1

if you are getting that alert  then this will work 


    function form_submit()
    {


    var item_name = $("input#id_item").val();

    var cost = $("input#id_cost").val();

    var wp = $("input#id_wp").val();

    var rp = $("input#id_rp").val();

    var dataString = 'item_name='+ item_name + '&cost=' + cost + '&wp=' + wp+ '&rp=' + rp;
    $.ajax({
        type: "post",
        url: "newAdd.php",
        data:dataString,
        success: function(msg){ 
        alert('success');   

        }
        });



    }