小编mol*_*a10的帖子

Html代码

<select id="dropdwon1">
 <option value="1">Item1</option>
 <option value="2">Item2</option>
 <option value="3">Item3</option>
</select>

<select id="dropdwon2"></select>

我需要使用jQuery将所有选项从dropdown1复制到dropdown2.是否可以简单地复制内容？

此刻我正致力于巨大的角度SPA应用.我试着保持我的控制器很薄:

<div ng-controller='HomeController as home'>
   <div ng-repeat='var item in home.items' ng-bind='item' ></div>
   <button ng-click='home.remove(1)' >remove</button>
</div>

function HomeController (homeService){
    var vm = this; //$scope
    vm.items = [1,2,3,4,5];
    vm.remove = remove;

    function remove (id){
        homeService.remove({ items: vm.items, targetId: id });
    }

    //a lot of other logic here
}


angular.module('my').service('homeService', homeService);
function homeService (){
    this.remove = remove;

    function remove (param){
        for(var a = 0; a < param.items.length; a++){
            if(param.items[a] == param.targetId){
                param.items.splice(a, 1);
                break;
            }
        }
    }
}

好处:

• 逻辑在控制器之外

缺点:

• 服务变更范围状态 …

JavaScript的\ jQuery的:

 var items = new Array();

 var obj { Begin: "444", End: "end" };

 items.push(obj);
 items.push(obj);

  var request = {
             DateStart: $("#DateStart").val(),
             mass: items
         };


 $.post("/Home/Index", request, null,
 "json");

C#Mvc索引控制器

 public class MyClass
     {
        public string Begin;
        public string End;
     }

     [AcceptVerbs(HttpVerbs.Post)]        
     public ActionResult Index(            
         string DateStart,            
         MyClass []mass)
     {
         System.Diagnostics.Debug.WriteLine(mass[0].Begin);
     }

如何执行此代码？谢谢.

任何人都可以解释,为什么这段代码返回abc,True？

        var str1 = "abc";
        var str2 = "";

        var builder = new StringBuilder();
        builder.Append("a");
        builder.Append("b");
        builder.Append("c");


        str2 = builder.ToString();
        Console.WriteLine(string.IsInterned(str2));
        Console.WriteLine(str1.Equals(str2));

我用反射器看StringBuilder.ToString()方法但是找不到任何使用string.Intern的方法.

我使用的是Net Framework 4.5