無限循環等待2秒，讓服務器調用jquery

Question

我正在用jquery做一個簡單的遊戲，我想調用asp.net web服務，我知道該怎麼做，但服務器調用需要繼續運行直到我得到服務器的特定響應。

我會像等待3秒鐘，每個循環週期

function servercall() { 
      while (true) { 
       // code for clone and insert ... 
       $.ajax({ 
        type: "POST", 
        url: "Server.asmx/HelloWorld", 
        data: "{'name': '" + $('#name').val() + "', 'time': '2pm'}", 
        contentType: "application/json; charset=utf-8", 
        dataType: "json", 
        success: function(msg) { 
         AjaxSucceeded(msg); 
        }, 
        error: AjaxFailed 
       }); 
       setTimeout("nothing", 2000); 
      } 

     } 

Answer 1

使用setTimeout遞歸。並確保在收到響應時啓動計時器，以便解決網絡延遲問題（您不希望大量請求同時發生）...

function servercall() { 
    $.ajax({ 
    complete: function(xhr) { 
     var msg = xhr.responseText; 
     if(xhr.statusCode == 200) 
     AjaxSucceeded(msg); 
     else 
     AjaxFailed(msg); 

     setTimeout(servercall, 2000); //recursion magic 
    } 
    }); 
} 

Answer 2

你想要的JavaScript setTimeout() Function。

Answer 3

您可以嘗試兩種：

function serverCall() { 
    // ajax code 

    setTimeout("serverCall()", 2000); 
} 

或：

function ajaxSucceeded(msg) { 
    if (isTheAnswerYouAreLookingFor) { 
     // do stuff 
    } else { 
     setTimeout("serverCall()", 2000); 
    } 
} 

下面是setTimeout和setInterval的一篇文章，可以幫助你進一步：
http://www.elated.com/articles/javascript-timers-with-settimeout-and-setinterval/

Answer 4

設定的時間間隔更有幫助的：

<script type='text/javascript'> 

setInterval("servercall()", 2000); 

function servercall() { 

       // code for clone and insert ... 
       $.ajax({ 
        type: "POST", 
        url: "Server.asmx/HelloWorld", 
        data: "{'name': '" + $('#name').val() + "', 'time': '2pm'}", 
        contentType: "application/json; charset=utf-8", 
        dataType: "json", 
        success: function(msg) { 
         AjaxSucceeded(msg); 
        }, 
        error: AjaxFailed 
       }); 

      } 

     } 

</script>