Javascript 迭代这个JSON对象并获取它的值？
我有一个JSON数组对象，我想通过它导航并获取它的值。但我得到：uncaughttypeerror：无法读取未定义的属性“length” 这是生成JSON的ajax函数：Javascript 迭代这个JSON对象并获取它的值？,javascript,jquery,json,Javascript,Jquery,Json,我有一个JSON数组对象，我想通过它导航并获取它的值。但我得到：uncaughttypeerror：无法读取未定义的属性“length” 这是生成JSON的ajax函数： $.ajax({ type: 'GET', url: "<?php echo $html->url(array("controller" => "porders", "action" => "getBudgetProduct")); ?>", data: "product_id="+p
$.ajax({
type: 'GET',
url: "<?php echo $html->url(array("controller" => "porders", "action" => "getBudgetProduct")); ?>",
data: "product_id="+product_id+"&cantidad="+cantidad,
dataType:"text json",
success: function(producto){
console.log(producto);
addCost(producto, cantidad);
},
error: function() {
console.log("Error en el AJAX");
}
});
function addCost(producto, cantidad)
{
var html = '';
html += '<h2>';
html += '<?php __("Costo de Producción");?>';
html += '</h2>';
html += '<h3>';
html += '<?php __("Lista de Semiterminados");?>';
html += '</h3>';
html += '<table id="items" cellpadding="0" cellspacing="0" style="width:500px;">'
html += '<tr>';
html += '<th><?php __("Codigo"); ?></th>';
html += '<th><?php __("Codigo Secundario"); ?></th>';
html += '<th><?php __("Producto"); ?></th>';
html += '<th><?php __("Cantidad"); ?></th>';
html += '</tr>';
for (var i = 0; i < producto.length; i++) {
if (producto[i]["Motion"]["composers"] > 0)
{
html += '<tr>';
html += '<td class="code">';
html += '<input type="hidden" value="" class="id">';
html += producto[i]["Motion"]["code"];
html += ' ';
html += '</td>';
html += '<td class="code2">';
html += producto[i]["Motion"]["code2"];
html += ' ';
html += '</td>';
html += '<td class="name">';
html += producto[i]["Motion"]["name"];
html += ' ';
html += '</td>';
html += '<td class="quantity">';
html += producto[i]["Motion"]["quantity"];
html += ' ';
html += '</td>';
html += '</tr>';
};
};
html += '</table>';
);
卡尔，请你帮帮我。谢谢我把Javascript和html都带到了JSFIDLE，它们在这里工作正常 所以我想还有一些其他的东西，我想一些变量是未定义的
var producto=[
{
"Motion": {
"id": "1801",
"code": "31042014",
"code2": "33207",
"name": "CEBOLLAS X KILO",
"composers": "0",
"buy_price": "7400",
"composition_cost": "0.00000000000000000000",
"quantity": "7.5"
}
},
{
"Motion": {
"id": "1912",
"code": "31061009",
"code2": "3134108",
"name": "LECHE ENTERA EN SACHET X LT",
"composers": "0",
"buy_price": "3100",
"composition_cost": "0.00000000000000000000",
"quantity": "6.0"
}
},
{
"Motion": {
"id": "1718",
"code": "31034001",
"code2": "31401",
"name": "HUEVOS X UNIDAD",
"composers": "0",
"buy_price": "433.333333",
"composition_cost": "0.00000000000000000000",
"quantity": "50"
}
},
{
"Motion": {
"id": "300001091",
"code": "31053003",
"code2": "35305",
"name": "HARINA DE MAIZ X KGR",
"composers": "0",
"buy_price": "5000",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1748",
"code": "31062016",
"code2": "34202",
"name": "QUESO PARAGUAY X KL",
"composers": "0",
"buy_price": "25000",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1775",
"code": "31031005",
"code2": "31101",
"name": "ACEITE A GRANEL X LT",
"composers": "0",
"buy_price": "7299.6",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1752",
"code": "31035047",
"code2": "31501",
"name": "SAL FINA X KL",
"composers": "0",
"buy_price": "2037.98",
"composition_cost": "0.00000000000000000000",
"quantity": "0.225"
}
},
{
"Motion": {
"id": "300001800",
"code": "210402001",
"code2": "84231",
"name": "SOPA PARAGUAYA X KILO",
"composers": "7",
"buy_price": "0",
"composition_cost": "10778.50661836734693877551020",
"quantity": "7.5"
}
}
];
var html = '';
html += '<h2>';
html += '<?php __("Costo de Producción");?>';
html += '</h2>';
html += '<h3>';
html += '<?php __("Lista de Semiterminados");?>';
html += '</h3>';
html += '<table id="items" cellpadding="0" cellspacing="0" style="width:500px;">'
html += '<tr>';
html += '<th><?php __("Codigo"); ?></th>';
html += '<th><?php __("Codigo Secundario"); ?></th>';
html += '<th><?php __("Producto"); ?></th>';
html += '<th><?php __("Cantidad"); ?></th>';
html += '</tr>';
for (var i = 0; i < producto.length; i++) {
if (producto[i]["Motion"]["composers"] > 0)
{
html += '<tr>';
html += '<td class="code">';
html += '<input type="hidden" value="" class="id">';
html += producto[i]["Motion"]["code"];
html += ' ';
html += '</td>';
html += '<td class="code2">';
html += producto[i]["Motion"]["code2"];
html += ' ';
html += '</td>';
html += '<td class="name">';
html += producto[i]["Motion"]["name"];
html += ' ';
html += '</td>';
html += '<td class="quantity">';
html += producto[i]["Motion"]["quantity"];
html += ' ';
html += '</td>';
html += '</tr>';
};
};
html += '</table>';
alert(html);
显示您的javascript代码！调试器告诉您，问题出在第1582行的javascript文件预算中。从哪个对象调用addCost？在那一点上它可能是空的吗？是您从addCost函数提供的代码吗？producto来自哪里？producto是什么？我打赌它不是数组。错误表明它实际上是未定义的。对不起，我将更新它，这是来自addCost函数的代码这更适合于注释-这不是真正的答案。您认为问题是什么？我可以使用以下语法：producto[i].Motion.quantity而不是此producto[i][Motion][quantity]有什么区别吗？我在函数的底部声明了一个未定义的变量我让代码正常工作了！！它应该给他洞察力。。。我认为他的问题并不是很严重。。。
var producto=[
{
"Motion": {
"id": "1801",
"code": "31042014",
"code2": "33207",
"name": "CEBOLLAS X KILO",
"composers": "0",
"buy_price": "7400",
"composition_cost": "0.00000000000000000000",
"quantity": "7.5"
}
},
{
"Motion": {
"id": "1912",
"code": "31061009",
"code2": "3134108",
"name": "LECHE ENTERA EN SACHET X LT",
"composers": "0",
"buy_price": "3100",
"composition_cost": "0.00000000000000000000",
"quantity": "6.0"
}
},
{
"Motion": {
"id": "1718",
"code": "31034001",
"code2": "31401",
"name": "HUEVOS X UNIDAD",
"composers": "0",
"buy_price": "433.333333",
"composition_cost": "0.00000000000000000000",
"quantity": "50"
}
},
{
"Motion": {
"id": "300001091",
"code": "31053003",
"code2": "35305",
"name": "HARINA DE MAIZ X KGR",
"composers": "0",
"buy_price": "5000",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1748",
"code": "31062016",
"code2": "34202",
"name": "QUESO PARAGUAY X KL",
"composers": "0",
"buy_price": "25000",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1775",
"code": "31031005",
"code2": "31101",
"name": "ACEITE A GRANEL X LT",
"composers": "0",
"buy_price": "7299.6",
"composition_cost": "0.00000000000000000000",
"quantity": "4.500"
}
},
{
"Motion": {
"id": "1752",
"code": "31035047",
"code2": "31501",
"name": "SAL FINA X KL",
"composers": "0",
"buy_price": "2037.98",
"composition_cost": "0.00000000000000000000",
"quantity": "0.225"
}
},
{
"Motion": {
"id": "300001800",
"code": "210402001",
"code2": "84231",
"name": "SOPA PARAGUAYA X KILO",
"composers": "7",
"buy_price": "0",
"composition_cost": "10778.50661836734693877551020",
"quantity": "7.5"
}
}
];
var html = '';
html += '<h2>';
html += '<?php __("Costo de Producción");?>';
html += '</h2>';
html += '<h3>';
html += '<?php __("Lista de Semiterminados");?>';
html += '</h3>';
html += '<table id="items" cellpadding="0" cellspacing="0" style="width:500px;">'
html += '<tr>';
html += '<th><?php __("Codigo"); ?></th>';
html += '<th><?php __("Codigo Secundario"); ?></th>';
html += '<th><?php __("Producto"); ?></th>';
html += '<th><?php __("Cantidad"); ?></th>';
html += '</tr>';
for (var i = 0; i < producto.length; i++) {
if (producto[i]["Motion"]["composers"] > 0)
{
html += '<tr>';
html += '<td class="code">';
html += '<input type="hidden" value="" class="id">';
html += producto[i]["Motion"]["code"];
html += ' ';
html += '</td>';
html += '<td class="code2">';
html += producto[i]["Motion"]["code2"];
html += ' ';
html += '</td>';
html += '<td class="name">';
html += producto[i]["Motion"]["name"];
html += ' ';
html += '</td>';
html += '<td class="quantity">';
html += producto[i]["Motion"]["quantity"];
html += ' ';
html += '</td>';
html += '</tr>';
};
};
html += '</table>';
alert(html);