Is it possible to alter Math Equations in a loop?

Question

Take this array of math expressions, which are NOT strings:

let eqs = [ 1+n, 2+n, 3+n]

Is it possible to loop through these equations and modify them WITHOUT evaluating them in javascript somehow?

eqs.map(eq => eq + 1)

...and return this:

// [ 1+n+1, 2+n+1, 3+n+1]

Is something like that even possible at all? Doesn't have to be .map() just using that as an example. Doesn't have to be that syntax, i just can't imagine what the syntax for something like that might be is all...

Been googling around but I haven't found much yet...but I am getting the feeling that this might NOT be possible...is that the case?

Thank you for any assistance:-)

Answer 1

This could be a starting point:

 let eqs = [ "1+n", "2+n", "3+n"] let modeqs = eqs.map(eq => eq+"+1") console.log(modeqs); [0,8,15].map(n=>console.log(modeqs.map(s=>(new Function('n','return '+s))(n))))

The updated snippet now contains a part that converts each formula into a function and then executes it in a .map() structure.

Alternatively you could start with and manipulate actual functions:

 let eqs = [ n=>1+n, n=>2+n, n=>3+n] let modeqs = eqs.map(fn => eval(fn.toString()+"+1") ) console.log(modeqs); [0,8,15].map(n=>console.log(modeqs.map(fn=>fn(n))));

The last example uses eval() which by many is seen as a possible security risk. So, please think about where and when you want to use it.

Answer 2

You can do that

 let eqs = ['1+n', '2+n', '3+n'] console.log(eqs.map(eq => `${eq}+1`))

If you want another things. Comment below.

Answer 3

You can use Template literals (Template strings)

Demo:

 let eqs = ['1+n', '2+n', '3+n']; let res = eqs.map(eq => `${eq}+1`); console.log(res);