Михаил Ливач

const divider = '-';
const symbol = 'x';
let x = symbol;
let prefix = divider;
let suffix = divider;
for (let i = 0; i < 2; i++) {
    prefix += x + divider;
    suffix = divider + x + suffix;
    x += symbol;
}
let result = prefix + x + suffix;
console.log(result);

func = function (arr) {
    return [].concat( ...arr );
};

func = function (arr) {
    let tmp = [];
    return arr.map( (item => tmp = tmp.concat(item)) ).pop();
};

кнопка кнопка
кнопка

"2ef0": function(t, e, n) {
	(function(t, r) {
		t._ = window._;
		r.exports = window._;
	}).call(this, n("c8ba"), n("62e4")(t))
}

const gmExample = {
    "south": 43.106491921792255,
    "west": 76.71745650634767,
    "north": 43.4065384633472,
    "east": 77.13974349365236
};

const dgExample= {
    "northEast": [
        76.92894332280319,
        43.25695003829279
    ],
    "southWest": [
        76.92825667730312,
        43.256449960663694
    ]
};

const gm = {
  "south": dgExample.southWest[1],
    "west": dgExample.southWest[0],
    "north": dgExample.northEast[1],
    "east": dgExample.northEast[0]
};
const dg = {
    "northEast": [
        gmExample.east,
        gmExample.north
    ],
    "southWest": [
        gmExample.west,
        gmExample.south
    ]

};

<form action="vhomestx.com/form/mail.php" class="form js-form" id="form">

<form action="https://vhomestx.com/form/mail.php" class="form js-form" id="form">

treeInterest[i].checked ?
        childCheckbox.forEach((elem) => (elem.checked = true)) :
        childCheckbox.forEach((elem) => (elem.checked = false));

treeInterest[i].checked ?
      childCheckbox.forEach((elem) => {elem.checked = true; elem.indeterminate = false;}) :
        childCheckbox.forEach((elem) => {elem.checked = false;elem.indeterminate = false;});