Javascript 如何向javascript对象中的一个键添加多个值
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how to add many values to one key in javascript object
提问by jfriend00
I have an object var obj = {key1: "value1", key2: "value2"};I want to add multiple values or array of values to key1 or key2 e.g
var obj = {key1: "arrayOfValues", key2: "value2"};is it possible? basically I want to send it to php for process.
我有一个对象，var obj = {key1: "value1", key2: "value2"};我想向 key1 或 key2 添加多个值或值数组，例如
var obj = {key1: "arrayOfValues", key2: "value2"};，这可能吗？基本上我想将它发送到 php 进行处理。
回答by Ali Saberi
You can make objects in two ways.
您可以通过两种方式制作对象。
- Dot notation
- Bracket notation
- 点符号
- 括号表示法
Also you can be define values in array with/without initial size. For scenario one you can do the following in worst case scenario:
您也可以在有/没有初始大小的数组中定义值。对于场景一，您可以在最坏的情况下执行以下操作：
var obj = {}
obj.key1 = new Array();
obj.key2 = new Array();
// some codes related to your program
obj.key1.push(value1);
// codes ....
obj.key1.push(value);
// ... same for the rest of values that you want to add to key1 and other key-values
If you want to repeat the above codes in bracket notation, it will be like this
如果你想用括号符号重复上面的代码，它会是这样的
var obj = {}
obj['key1'] = new Array();
obj['key2'] = new Array();
// some codes related to your program
obj['key1'].push(value1);
// codes ....
obj['key1'].push(value);
// ... same for the rest of values that you want to add to key1 and other key-values
With bracket notation, you can use characters e.g 1,3,%, etc. that can't be used with dot notation.
使用括号表示法，您可以使用不能与点表示法一起使用的字符，例如 1,3、% 等。
回答by jfriend00
You can just define an array for the property:
您可以为该属性定义一个数组：
var obj = {key1: ["val1", "val2", "val3"], key2: "value2"};
Or, assign it after the fact:
或者，事后分配：
var obj = {key2: "value2"};
obj.key1 = ["val1", "val2", "val3"];
