如何在 JavaScript 中初始化锯齿状数组?

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时间:2020-10-25 18:52:08  来源:igfitidea点击:

How to initialize a jagged array in JavaScript?

javascriptjagged-arrays

提问by John Keats

Is it possible to have a jagged array in JavaScript?

在 JavaScript 中可以有一个锯齿状的数组吗?

Here is the format of the data I want to store in a jagged array:

这是我要存储在锯齿状数组中的数据格式:

(key)(value1, value2, value3)

Can I put this in a jagged array?

我可以把它放在一个锯齿状的数组中吗?

回答by Andy E

Yes, you can create that type of array using object or array literal grammar, or object/array methods.

是的,您可以使用对象或数组文字语法或对象/数组方法创建该类型的数组。

An array of arrays:

数组数组:

// Using array literal grammar
var arr = [[value1, value2, value3], [value1, value2]]

// Creating and pushing to an array
var arr = [];
arr.push([value1, value2, value3]);

An object of arrays:

数组对象:

// Using object literal grammar
var obj = { "key": [value1, value2, value3], "key2": [value1, value2] } 

// Creating object properties using bracket or dot notation
var obj = {};
obj.key = [value1, value2, value3];
obj["key2"] = [value1, value2];