Javascript 网站未等待同步web服务的结果

我在我的网站中调用了同步web服务，但不需要等待它们的结果

我在函数loadLayout中校准函数loadExtLayout，然后在网站的其他函数中调用函数loadLayout

    HTTPRequestService.prototype.loadExtLayout = function(pathToLoad){
        logManager.IHM_LOG_INFO("BEGIN HTTPRequestService loadExtLayout call pathToLoad="+JSON.stringify(pathToLoad));
        var loadResult = null;
        $.ajax({
            async:false,
            method: "GET",
            url: pathToLoad
        }).done(function(result){
                loadResult = result;
            }).fail(function(jqXHR, textStatus){
                loadResult = null;
                logManager.IHM_LOG_ERROR(new Error().stack+": "+"Error loading layout : " + pathToLoad + " (" + textStatus + ")\n");
               });
        logManager.IHM_LOG_INFO("END HTTPRequestService loadExtLayout call");
        return loadResult;
    }


GenericLayoutController.prototype.loadLayout = function(layoutName){
    logManager.IHM_LOG_INFO("BEGIN loadLayout");
    var loadResult = false;
    var layoutContent = null;
    try {
        var httpService = new HTTPRequestService(this.AppId);
        if(httpService != null){

            layoutContent = httpService.loadExtLayout(layoutName);
            console.log("layoutContent :" + layoutContent); 
            if ((layoutContent != null) && ($("#window_"+ this.AppId + "_" + this.WndId).attr("patternname") == this.patternName)) {
                $("#window_"+ this.AppId + "_" + this.WndId).empty();
                $("#window_"+ this.AppId + "_" + this.WndId).html(layoutContent);
                loadResult = true;
            } else if( layoutContent == null ){
                logManager.IHM_LOG_ERROR("Error loading layout !");
            }
        } else {
            logManager.IHM_LOG_ERROR("Error unable to create HTTPRequestService object : httpService is null !");
        }
    } catch(e) {
        loadResult = false;
        logManager.IHM_LOG_ERROR(new Error().stack+": "+e+"\n");
    }
    logManager.IHM_LOG_INFO("END loadLayout");
    return loadResult;
}

---

如果您使用ajax参数'async:false'，则必须使用回调（成功）而不是承诺，因为'then'异步工作，并在承诺从服务器检索数据之前执行'return'

let data = null;
$.ajax({
   async:false,
   method: "GET",
   url: pathToLoad,
   success:(response)=>{data = response}
}); 
return data;

或者可以异步执行

HTTPRequestService.prototype.loadExtLayout = function(pathToLoad){
    logManager.IHM_LOG_INFO("BEGIN HTTPRequestService loadExtLayout call pathToLoad="+JSON.stringify(pathToLoad));

    let loadResult = new Promise((resolve,reject)=>{
        $.ajax({
            async:false,
            method: "GET",
            url: pathToLoad
        }).done(function(result){
                resolve(result);
            }).fail(function(jqXHR, textStatus){
                reject(textStatus);
                loadResult = null;
                logManager.IHM_LOG_ERROR(new Error().stack+": "+"Error loading layout : " + pathToLoad + " (" + textStatus + ")\n");
               });
    });
    logManager.IHM_LOG_INFO("END HTTPRequestService loadExtLayout call");
    return loadResult;
}

---

这对我不起作用，我需要所有的治疗同步，等待web服务的结果。是否有强制同步执行的库？