Javascript多子数组

时间：2012-09-18 10:03:07

标签： javascript

我有一个生成动态子数组的javascript代码。

function createArray() {

    var myArr = new Object();
    myArr[0] = createSubArray('apple');
    myArr[1] = createSubArray('Mango');
    myArr[2] = createSubArray('Pineapple');
    myArr[3] = createSubArray('Grape');
    document.getElementById("a").innerHTML = JSON.stringify(myArr);
    return myArr;

}


function createSubArray(name){
    var arr = new Object();
    elems = document.getElementsByName(name);
    for (var i=0;i<elems.length;i++){
        if (elems[i].checked){
            arr[name] =  elems[i].value;
            arr['price'] =  elems[i].getAttribute('data-price');
        }
    }
    return arr;

}

我得到的输出如下

array
  0 => 
    array
      'apple' => string 'light' (length=5)
      'price' => string '10' (length=2)
  1 => 
    array
      'apple' => string 'light1' (length=5)
      'price' => string '10' (length=2)
  2 => 
    array
      'Mango' => string 'dark' (length=4)
      'price' => string '40' (length=2)
  3 => 
    array
      'Pineapple' => string 'dark' (length=4)
      'price' => string '60' (length=2)
  4 => 
    array
      'Grape' => string 'dark' (length=4)
      'price' => string '80' (length=2)

但我需要数组如下所示

array
  0 => 
    array
      'apple' => string 'light' (length=5)
       0 => 
           array
            'apple' => string 'light' (length=5)
            'price' => string '10' (length=2)
       1 => 
           array
            'apple' => string 'light1' (length=5)
            'price' => string '10' (length=2)
  1 => 
    array
      'Mango' => string 'light' (length=5)
       0 => 
           array
            'Mango' => string 'light' (length=5)
            'price' => string '10' (length=2)
  2 => 
    array
      'Pineapple' => string 'light' (length=5)
       0 => 
           array
            'Pineapple' => string 'light' (length=5)
            'price' => string '10' (length=2)

所以我改变了像这样的javascript 

function createArray()
{
    var myArr = new Object();
    var _tempa = new Array();
    var elems = document.getElementsByTagName("input");
     for (var i=0;i<elems.length;i++)
     {  if (elems[i].checked){
         _tempa.push(elems[i].getAttribute('name'));
            myArr[i] = createSubArray1(_tempa);
          }
      }
     document.getElementById("a").innerHTML = JSON.stringify(myArr);
    return myArr;
} 

function createSubArray1(namearr){

    var arr1 = new Object();
    for (var j=0;i<namearr.length;j++){
    var elems = document.getElementsByName(name[j]);
    for (var i=0;i<elems.length;i++){
        if (elems[i].checked)
        {
        arr1[elems[i].getAttribute('data-gpname')] =  createSubArray(elems[i].getAttribute('name'));
        }
    }
    }
    return arr1;
}

 function createSubArray(name){
    var arr = new Object();
    var elems = document.getElementsByName(name);
    for (var i=0;i<elems.length;i++){
        if (elems[i].checked)
        {
        arr['productname'] =  elems[i].value;
        arr['price'] =  elems[i].getAttribute('data-price');
        }
    }
    return arr;
}

在此之后我得到了如下的输出

[{},{}]

我的Html在

之下 
<form method="post">
Apple
<input type="radio" onclick="createArray()" id="one" name="apple" data-gpname="apple" data-price="10" value="light"/> Light
<input type="radio" onclick="createArray()" id="two" name="apple" data-gpname="apple" data-price="20" value="dark" /> Dark
<input type="radio" onclick="createArray()" id="one1" name="apple1" data-gpname="apple"  data-price="120" value="light2"/> Light11
<input type="radio" onclick="createArray()" id="two1" name="apple1" data-gpname="apple" data-price="210" value="dark1" /> Dark22
<input type="text" id="appleqty" name="appleqty" value="" />
<br>
Mango
<input type="radio" onclick="createArray()" id="three" name="Mango" data-gpname="Mango"  data-price="30" value="light"/> Light
<input type="radio" onclick="createArray()" id="one" name="Mango" data-gpname="Mango" data-price="40" value="dark" /> Dark
<input type="text" id="Mangoqty" name="Mangoqty" value="" />
<br>
Pine Apple
<input type="radio" onclick="createArray()" id="four" name="Pineapple" data-gpname="Pineapple" data-price="50" value="light"/> Light
<input type="radio" onclick="createArray()" id="five" name="Pineapple" data-gpname="Pineapple" data-price="60" value="dark" /> Dark
<input type="text" id="Pineappleqty" name="Pineappleqty" value="" />
<br>
Grape
<input type="radio" onclick="createArray()" id="six" name="Grape" data-gpname="Grape" data-price="70" value="light"/> Light
<input type="radio" onclick="createArray()" id="seven" name="Grape" data-gpname="Grape" data-price="80" value="dark" /> Dark
<input type="text" id="Pineappleqty" name="Pineappleqty" value="" />

<textarea name="a" id="a" cols="50"></textarea>
<input type="submit" name="se" value="se" />
</form>

我使用php json_decode来获取数组结构

4 个答案:

答案 0 :(得分：3)

使用Textarea中的输出更新了演示：http://jsfiddle.net/zZxaR/13/

注意：添加了几种在控制台中打印数组的方法

免责声明：使用了一些jQuery来简化遍历。不用也可以轻松完成。

<强>代码：

function createArray() {
    var myArray = [], i = 0, temp;
    while(i < 4) myArray[i++] = [];
    myArray[0]['apple'] = '';
    myArray[1]['mango'] = '';
    myArray[2]['grape'] = '';
    myArray[3]['pineapple'] = '';

    $('input[data-gpname]:checked').each(function() {
        var gp = $(this).attr('data-gpname').toLowerCase();
        for(i = 0; i < 4; i++) {
            if(myArray[i][gp] != undefined) {
                myArray[i][gp] = $(this).attr('value');
                temp = [];
                temp[gp] = $(this).attr('value');
                temp['price'] = $('#' + gp + 'qty').val();
                myArray[i].push(temp);
            }
        }
    });

    console.log(myArray);
    prettyPrint(myArray);
}

答案 1 :(得分：3)

希望this会帮助你。输出与您告诉here相同。

此页面的来源为here。

我根据您的评论制作了另一个sample。试试这个，让我知道。

HTML：

<form method="post" id="myform">
Apple
<input type="radio" onclick="constructJSON(this.name)" id="one" name="apple" data-gpname="apple" data-price="10" value="light"/> Light
<input type="radio" onclick="constructJSON(this.name)" id="two" name="apple" data-gpname="apple" data-price="20" value="dark" /> Dark
<input type="radio" onclick="constructJSON(this.name)" id="one1" name="apple1" data-gpname="apple"  data-price="120" value="light2"/> Light11
<input type="radio" onclick="constructJSON(this.name)" id="two1" name="apple1" data-gpname="apple" data-price="210" value="dark1" /> Dark22
<input type="text" id="appleqty" name="appleqty" value="" />
<br>
Mango
<input type="radio" onclick="constructJSON(this.name)" id="three" name="Mango" data-gpname="Mango"  data-price="30" value="light"/> Light
<input type="radio" onclick="constructJSON(this.name)" id="one" name="Mango" data-gpname="Mango" data-price="40" value="dark" /> Dark
<input type="text" id="Mangoqty" name="Mangoqty" value="" />
<br>
Pine Apple
<input type="radio" onclick="constructJSON(this.name)" id="four" name="Pineapple" data-gpname="Pineapple" data-price="50" value="light"/> Light
<input type="radio" onclick="constructJSON(this.name)" id="five" name="Pineapple" data-gpname="Pineapple" data-price="60" value="dark" /> Dark
<input type="text" id="Pineappleqty" name="Pineappleqty" value="" />
<br>
Grape
<input type="radio" onclick="constructJSON(this.name)" id="six" name="Grape" data-gpname="Grape" data-price="70" value="light"/> Light
<input type="radio" onclick="constructJSON(this.name)" id="seven" name="Grape" data-gpname="Grape" data-price="80" value="dark" /> Dark
<input type="text" id="Pineappleqty" name="Pineappleqty" value="" />

<textarea name="a" id="a" cols="50"></textarea>
<input type="submit" name="se" value="se" />

</form>

脚本：

var rgArray = [];
function constructJSON(name)
{
  rgArray.push(name);
  var myArray = {};
  var productData = {};
  productData['products'] = createArray();
  $("#a").html(JSON.stringify(productData));
}

function createArray(){
  var group = {};
  var product;
  var data;
  var hasValue = false;
  $rgArray = $(rgArray);
  $.each($rgArray, function(i, gp){
    product = {};
    var el = "input[data-gpname='"+gp+"']";
    $el = $(el);
    hasValue = false;
    $.each($el, function(i, item){

      if(item.checked){
          data = {};
          data.name = $(item).val();
          data.price = $(item).attr("data-price");

          hasValue = true;
          product[$(item).attr("name")] = data;
        }
    });
    if(hasValue) group[gp] = product;
  });
  return group;
}

答案 2 :(得分：1)

对于多子数组，我创建了example和代码here

贝娄只是参考我们：

在jQuery中，serialize array函数用于以数组格式打印/显示值。

$('form').submit(function() {
  console.log($(this).serializeArray());
  return false;
});

答案 3 :(得分：-1)

试试这段代码我刚刚编辑了一下

function createSubArray(name){
    var arr = [];

    elems = document.getElementsByName(name);
    for (var i=0;i<elems.length;i++){
        if (elems[i].checked){
            var o = {}
            o[name] =  elems[i].value;
            o['price'] =  elems[i].getAttribute('data-price');
            arr.push(o);
        }
    }
    return arr;

}
function createArray() {

    var myArr = [];
    myArr[0] = createSubArray('apple');
    myArr[1] = createSubArray('Mango');
    myArr[2] = createSubArray('Pineapple');
    myArr[3] = createSubArray('Grape');
    document.getElementById("a").innerHTML = JSON.stringify(myArr);
    return myArr;
}

之前你从createSubArray方法返回了一个对象，我认为这是一个错误 我已编辑它以返回包含所有对象的数组

这是我得到的JSON字符串

[
    [
        {
            "apple": "light",
            "price": "10"
        },
        {
            "apple": "dark",
            "price": "20"
        }
    ],
    [
        {
            "Mango": "light",
            "price": "30"
        },
        {
            "Mango": "dark",
            "price": "40"
        }
    ],
    [
        {
            "Pineapple": "light",
            "price": "50"
        },
        {
            "Pineapple": "dark",
            "price": "60"
        }
    ],
    [
        {
            "Grape": "light",
            "price": "70"
        },
        {
            "Grape": "dark",
            "price": "80"
        }
    ]
]
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