JavaScript code that transforms a comma-separated string of words into key-value pairs within an array

I am looking to transform a list of email addresses into a key-value object within an array. Starting with 

"<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="40252d21292c002d21292c6e232f2d">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="fd90949698bd98859c908d9198d39e9290">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="89e3e6e1e7c9eee4e8e0e5a7eae6e4">[email protected]</a>"
and aiming to achieve

[
   {"to": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="89ece4e8e0e5c9e4e8e0e5a7eae6e4">[email protected]</a>"},
   {"to": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="bbd6d2d0defbdec3dad6cbd7de95d8d4d6">[email protected]</a>"},
   {"to": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b0dadfd8def0d7ddd1d9dc9ed3dfdd">[email protected]</a>"}
]

This is the approach I took:

var req = {
  query: {
    personalize:
      "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="51343c30383d113c30383d7f323e3c">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5d303436381d38253c302d3138733e3230">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4c262324220c2b212d2520622f2321">[email protected]</a>"
  }
};
var emailList = req.query.personalize;
var emailArr = emailList.split(",");
var emailObj = Object.assign({}, emailArr);
console.log(emailObj);

Here's the outcome of my efforts:

"0": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="d8bdb5b9b1b498b5b9b1b4f6bbb7b5">[email protected]</a>"
"1": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6a0703010f2a0f120b071a060f44090507">[email protected]</a>"
"2": "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ef85808781af88828e8683c18c8082">[email protected]</a>"

Following that, I attempted this variation:

var req = {
  query: {
    personalize:
      "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f89d95999194b895999194d69b9795">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="9cf1f5f7f9dcf9e4fdf1ecf0f9b2fff3f1">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b2d8dddadcf2d5dfd3dbde9cd1dddf">[email protected]</a>"
  }
};
var emailList = req.query.personalize;
var arr = emailList.split(",");
const res = arr.reduce((acc,curr)=> (acc[curr]='to',acc),{});
console.log(res)

Although it was close, the result ended up in reverse of what I expected, displaying like so:

"<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1e7b737f77725e737f7772307d7173">[email protected]</a>": "to"
...
javascriptarraysobject

Answer №1

After some insightful comments from Ivar and Amir, it became clear that this method is effective.

function performMockTest() {
var request = {
  query: {
    personalize:
 "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7a1f171b13163a171b131654191517">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="5e343136301e39333f3732703d3133">[email protected]</a>,<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="3b565e7b5e435a564b575e15585456">[email protected]</a>"
  }
};
var emailList = request.query.personalize;
console.log(generateRecipientList(emailList))
}

performMockTest();

function generateRecipientList(emailString) {
  return emailString.split(",").map(to => ({to}));
}

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