可以将单个Javascript var视为数组吗？

Question

Whilst I am sure there's a duplicate question of this out there, because I am unfamiliar with javascript, I don't know the proper term, and thus wouldn't know where to start searching for it (if I knew what it was called, I'd just read up about it).

I have a singular var (that is not an array) that contains a set of numbers:

var Latitude = Math.floor(Math.random()*90) + Math.random();

I want to encode all numbers contained in Latitude, including the numbers after the floating point (and including the floating point, and any minus signs - although note this code example doesn't add a minus sign) into an array of letters, so 0 = A, 1 = B, so on.

Is there any simple way of converting the singular var into an array of individual numbers for encoding?

Answer 1

First, slight typo in your question, Math.random is a function. You want to convert the number you get to a string, the easiest way to do this is to add an empty string - '' . Then just use the split function to break the string into an array:

var Latitude = ((Math.floor(Math.random()*90) + Math.random()) + '').split('');

Answer 2

var latitude = new Array();
latitude.value = Math.floor(Math.random*90) + Math.random();
latitude.push(2);//demonstrating that it's an array;
console.log(latitude.value);//for testing purposes only
console.log(latitude);//for testing purposes only

Now you can use latitude's value but also use it as an array.

edit Sorry, I seem to have misread your question. Graham's answer is correct. But this might help someone with a similar problem. I thought you wanted to use the same variable to store a value and an array.

Answer 3

首先将值转换为字符串（toString（）），然后将其拆分（split（））：

var arr = Latitude.toString().split('')