JSFiddle - React, Tailwind, and code Playground

HTML

<form name="EnqFrm" ng-app="EnqFrm" ng-controller="EnqController" ng-submit="save()">
    <label>Class Days:</label>
    <input name="chkweek" ng-model="formData.chkweek.Mo" type="checkbox">Mo
    <input name="chkweek" ng-model="formData.chkweek.Tu" type="checkbox">Tu
    <input name="chkweek" ng-model="formData.chkweek.We" type="checkbox">We
    <input name="chkweek" ng-model="formData.chkweek.Th" type="checkbox">Th
    <input name="chkweek" ng-model="formData.chkweek.Fr" type="checkbox">Fr
    <input name="chkweek" ng-model="formData.chkweek.Sa" type="checkbox">Sa
    <button id="btnSubmit" class="btn btn-default">SUBMIT</button>
</form>

CSS

<?php if ($_SERVER['REQUEST_METHOD']=='POST') {
    $data=file_get_contents("php://input");
    $inp=json_decode($data);
    echo $txtWeek=$inp->chkweek;
}
else {
    echo'try agian';
}
?>

JavaScript

/* ANGULAR JS */
var weeksknm;
var app = angular.module('EnqFrm', []);
app.controller('EnqController', function ($scope, $http) {

    $scope.formData = {};

    $scope.save = function () {
        var url = "Controller/enq_postadmin.php";
        $http.post(url, $scope.formData).success(function (da) {
            alert(da);
            $scope.formData = "";
        });
    };

});