Reconstruct array

Question

I have thousands of lines of Javascript code like this:

var myCoordinates = [

    new google.maps.LatLng(11.11111,22.222222),
    new google.maps.LatLng(33.33333,44.444444),
    new google.maps.LatLng(55.55555,66.666666),

    //thousands of lines
];

I need to format code above to this without whitespaces (a.k.a to string I could copy to my PHP code):

---

[["lat"=>11.11111,"lng"=>22.22222],["lat"=>33.33333,"lng"=>44.44444],["lat"=>55.55555,"lng"=>66.66666],/*etc*/];

---

What I've tried and failed:

document.getElementById('format-submit').onclick = function() {

    var textareaValue = document.getElementById('format-textarea').value;

    var findA = 'var myCoordinates = ';
    var rA = new RegExp( findA, 'g' );
    var resultA = textareaValue.replace( rA, '' );

    //I get this error on this line:

    //Uncaught SyntaxError: Invalid regular expression: /new google.maps.LatLng(/: Unterminated group

    //              |
    //              V

    var findB = 'new google.maps.LatLng(';
    var rB = new RegExp(findB, 'g');
    var resultB = resultA.replace(rB, '["lat" => ');

    var findC = '),';
    var rC = new RegExp(findC, 'g');
    var resultC  = resultB.replace(rC, '],');

    var findD = ')';
    var rD = new RegExp(findD, 'g');
    var finalResult  = resultC.replace(rD, ']');

    textareaValue = finalResult;
};

---

Speed or performance is not an issue, I just need to:

1. Copy first JS code to textarea
2. Format it when button is pressed
3. Replace textarea value with formatted code
4. Copy it
5. Paste it to my code

---

Question:

How to replace part of string which has all kinds of letters, special characters etc in it?

(probable cause of error, right?)

Answer 1

I believe this is what you're looking for.

document.getElementById('format-submit').onclick = function() {
    var textarea = document.getElementById('format-textarea');

    textarea.value = textarea.value
        .replace(/^[^\[]+/,'')
        .replace(/^.*\(([\d.]+),([\d.]+)\)(,)?$/gm,'["lat" => $1, "lng" => $2]$3')
        .replace(/\s+/g,'');
};

<textarea id="format-textarea" rows="7" cols="46">var myCoordinates = [

    new google.maps.LatLng(11.11111,22.222222),
    new google.maps.LatLng(33.33333,44.444444),
    new google.maps.LatLng(55.55555,66.666666)

];</textarea><br>
<input type="button" id="format-submit" value="Format textarea">