使用ajax的post同步执行(实现方法)

Généralement, lorsque nous utilisons des requêtes AJAX, elles sont asynchrones. Après l'exécution des résultats, les paramètres ne peuvent pas être obtenus en dehors de la méthode, mais ils peuvent retourner des données lors de l'exécution synchrone.

Le paramètre async de ajaxSettings est configuré, par défaut, il est true, ce qui signifie asynchrone. Lors de l'exécution synchrone, il est configuré avant la méthode : 
$.ajaxSettings.async = false; At this point, the method can return the corresponding data after execution.

Code block

/** * Get list */
function flowAtoms(){  
//Request interface 
  var listUrl = getServerUrl('XXXXXXX'); 
  var param = {};
  $.ajaxSettings.async = false;  
   newlist="";  
  $.post(listUrl,param, function(data){   
    // Returned Json conversion    
     var data_json = $.parseJSON(data);  
    if(data_json.status==200){       
      // Initialize operation options      
      var data=data_json.data;      
      var funcHtml="";     
      $.each(data,function(i,v){        
        funcHtml+=v.name;  
       )     
      newlist = funcHtml;     
    } else {        
      alert(data_json.message);    
    }  
  ) 
  //Return the global variable newlist
  return newlist;
}

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