如何将项添加到嵌套数组？

Question

Say I have an array such as this in Javascript: 假设我在Javascript中有这样的数组：

var cars = { vendor: [ { type: [ 'camry', 'etc' ] } ] }

In Javascript what command can I use to add an item to type... For example if I wanted to have a text box that a user can place text into and then hit a button that will add the item into the array. 在Javascript中我可以使用什么命令来添加要键入的项...例如，如果我想要一个文本框，用户可以将文本放入，然后点击一个按钮，将该项添加到数组中。 The item that would be added would need to be placed in with the same items as "camry" and "etc". 要添加的项目需要与“camry”和“etc”相同的项目放置。 Thanks! 谢谢！

Answer 1

Try something like 尝试类似的东西

cars.vendor[0].type.push("foo");

Where "foo" is your data to add. “foo”是您要添加的数据。

Answer 2

You can add items to the array using the push() method to add to the end, or unshift() to add to the front. 您可以使用push()方法将项添加到数组中以添加到结尾，或者将unshift()添加到前端。

var newValue = 1234;

cars.vendor[0].type.push(newValue);

The event handler could then be bound using something similar to this; 然后可以使用与此类似的东西绑定事件处理程序;

$("yourSelector").on("click", function(){
    var value = $("input").val();

    cars.vendor[0].type.push(value);
});

Please bear in mind that what you have is not JSON at all. 请记住，你所拥有的不是JSON。 It's a nested structure of JavaScript Objects and Arrays, declared using literal syntax. 它是JavaScript对象和数组的嵌套结构，使用文字语法声明。 See Javascript object Vs JSON for more info. 有关详细信息，请参阅Javascript对象Vs JSON 。

Answer 3

Sample Test example for this problem as below: 此问题的示例测试示例如下：

<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
jQuery(document).ready(function(){
    var cars = {
        "vendor": [
            {
                "type": [
                    "camry",
                    "maruti",
                    "bmw"
                ]
            }
        ]
    };
    $("#add").click(function(){
        var types=cars["vendor"][0]["type"];
        types.push($("#json").val());
        $("#types").html(types.toString());
    });
});
</script>
</head>
<body>
<input type="text" id="json" name="json"/>
<input type="button" id="add" name="add" value="ADD"/>
<div id="types" style="margin:10px;border:1px dotted green;width:400px;"></div>
</body>
</html>

Answer 4

You can try something like given below 你可以试试下面给出的东西

var cars = { vendor: [ { type: [ 'camry', 'etc' ] } ] } ;
cars.vendor[0].type[2]="abc";

如何将项添加到嵌套数组？

问题描述

4 个解决方案

解决方案1
14 已采纳 2012-01-13 14:10:37

解决方案2
7 2012-01-13 14:09:14

解决方案3
1 2012-01-13 14:25:32

解决方案4
-1 2013-10-25 07:18:09

如何将项添加到嵌套数组？

问题描述

4 个解决方案

解决方案1 14 已采纳 2012-01-13 14:10:37

解决方案2 7 2012-01-13 14:09:14

解决方案3 1 2012-01-13 14:25:32

解决方案4 -1 2013-10-25 07:18:09

解决方案1
14 已采纳 2012-01-13 14:10:37

解决方案2
7 2012-01-13 14:09:14

解决方案3
1 2012-01-13 14:25:32

解决方案4
-1 2013-10-25 07:18:09