Create expressions in strings [closed]

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#1 by (1 votes)
#2 by (0 votes)

0

Suppose I have the following string:

const str = 'Eu sou

@if (1 + 1 === 2):
  um dois
@endif

!';

How do I run expressions like that if ? I do not want a solution to that problem, just the right way to do it.

javascript string

asked by anonymous 19.03.2018 / 19:36

2 answers

1

You can use the eval () function. This function evaluates javascript codes stored in string.

In your case:

const str = 'if (1 + 1 === 2) {alert(\'um dois\');}';

eval(str);

19.03.2018 / 19:45

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score 0 · Accepted Answer

Friend,

Since you use const then you can do something like this:

const str = 'Eu sou ${1 + 1 === 2 ? 'um dois' : 'nao sou'}!';

In other more advanced cases I recommend you use some template language in JS like Handlebars.js - link