How to replace text inside a [] in a string?

Question

I need to replace a text inside a string.

eg: The text will be

Hello! This is a test [query] which i am using for [transformation]

And what i need is to extract the string's inside [] with another string mapping object i have. which is in the form

{
"query":'ab',
"transformation":'cd'
}

So the result string will be Hello! This is a test [ab] which i am using for [cd]

i tried using some custom regex logic but i really got lost :D — Sagar Acharya, Nov 24 '20 at 09:21
SO is not a free code writing service, so please add your most promising approach, describe the problems you have with it and we might be able to fix it. — Andreas, Nov 24 '20 at 09:23
does the mapping object contain all cases? what should be filled if the string doesn't exist in mapping object? — michael, Nov 24 '20 at 09:34

score 0 · Accepted Answer · answered Nov 24 '20 at 09:22

0

var input = "Hello! This is a test [query] which i am using for [transformation]"

const query = {
"query":'ab',
"transformation":'cd'
}

Object.keys(query).forEach(key => {
  input = input.replace(key, query[key])
})

console.log(input)

answered Nov 24 '20 at 09:22

wangdev87

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score 0 · Answer 2 · answered Nov 24 '20 at 09:36

const str =
  'Hello! This is a test [query] which i am using for [transformation]';

const mapping = {
  query: 'ab',
  transformation: 'cd'
};

const res = Object.keys(mapping).reduce(
  (modified, key) => modified.replace(key, mapping[key]),
  str
);

console.log(res);

How to replace text inside a [] in a string?

2 Answers2