Виктор Л

var str = 'abcdef';
alert('\u202E'+str);

<button id="show">Показать на карте</button>
<div id="map" style="width: 300px; height: 300px"></div>

ymaps.ready(init);
    var myMap;
    function init(){     
        myMap = new ymaps.Map ("map", {
            center: [55.76, 37.64],
            zoom: 7            
        })}
var el = document.getElementById("show");
el.addEventListener("click", showBal, false);
function showBal(){
myMap.balloon.open(myMap.getCenter(), { content: 'Hello Yandex!' }, { closeButton: true });
}

<div id="boxes">
<input type="checkbox" data-exval="2000">Доставка
<input type="checkbox" data-exval="500">Подъем
<input type="checkbox" data-exval="2500">Монтаж
</div>
<div>Итого: <span id="result"></span></div>

$(document).ready(function(){
  $("#boxes input[type='checkbox']").click(function(){
    var total=0;
    $("#boxes input[type='checkbox']:checked").each(function(){
          total += parseInt($(this).data("exval"),10);
    });
    $("#result").text(total);
  });
});

Array = [{name:'test', lastname: 'test', gender:'f'},{name:'test1', lastname: 'test1', gender:'f'},{name:'test2', lastname: 'test2', gender:'m'}];

var result = $.grep(Array, function(e){ return e.name == "test1"; });

console.log(result);

var data = [{"name": 1,"y": 11111},
  {"name": 2,"y": 22222},
  {"name": 3,"y": 33333}
];
var newname = ["Хабрахабр", "Тостер", "Постер"];
newdata = data
					.filter(function (el) {          
   return el.name = newname[el.name-1];
}
 );
console.log(newdata);

var someArray = [{name:'test', lastname: 'test', gender:'f'},{name:'test1', lastname: 'test1', gender:'f'},{name:'test2', lastname: 'test2', gender:'m'}];
$.each(someArray, function(i){
    if(someArray[i].gender === 'm') {
        someArray.splice(i,1);
        return false;
    }
});
console.log(someArray);

someArray = [{name:'test', lastname: 'test', gender:'f'},{name:'test1', lastname: 'test1', gender:'f'},{name:'test2', lastname: 'test2', gender:'m'}];
johnRemoved = someArray
                .filter(function (el) {
                      return el.gender !== "m";
                 }
);
console.log(johnRemoved);