I have a problem when Im trying to convert a string to a variable in an array.
The variables are:
const n = 1; const s = -1;
The array string:
let walk = ['n', 's', 'n', 's', 'n', 's', 'n', 's', 'n', 'n'];
I want to convert automatically to this variable array:
let walk = [n, s, n, s, n, s, n, s, n, n];
I'm trying to split but the array still string not a var:
let text = walks.toString().split(',').join('-')
console.log(text)
You could put s and n into an object.
const variables = {
n: 1,
s: -1
};
let walk = ['n', 's', 'n', 's', 'n', 's', 'n', 's', 'n', 'n'];
console.log(
walk.map(variable => variables[variable])
)See this question for more info on accessing variables via another variable.
You could use eval, but it is usually not recommended.
const n = 1; const s = -1;
let walk = ['n', 's', 'n', 's', 'n', 's', 'n', 's', 'n', 'n'].map(eval);
console.log(walk);As @Unimitigated said, eval() is not recommended to use.
For more details refer to this link Never use eval()!
For a better way, without eval(). You can try this approach
const n = 1; const s = -1;
const array = [];
let walk = ['n', 's', 'n', 's', 'n', 's', 'n', 's', 'n', 'n'].map(value => {
return Function('"use strict";return (' + value + ')')();
});
I hope this would be useful.