Question

我希望为require创建一个模块数组，循环遍历模块，以异步方式请求require，然后回调。我尝试过以下方法：

// async require module for other required modules
function asyncRequire (requireList, callback) {
    if (!Array.isArray(requireList)) {return};

    var index = -1;
    var loop = {}
    loop.next = function () {
        if (index < requireList.length) {
            var asyncOperation = function (j) {
                setTimeout(function() {
                    index++;
                    var item = requireList[index];
                    console.log(item);
                    window[item] = require(item);
                    loop.next();
                }, 10);
            }
            asyncOperation(requireList);
        } else {
            if (typeof callback === "function") {
                setTimeout(function() {
                    callback();
                }, 1000);
            }
        }
    }
    loop.next();
}

// usage example
var requireList = ['moduleName', 'moduleName2']

asyncRequire(requireList, callback)

function callback() {
    console.log("success");
}

但是，虽然path的{{1}}是正确的，但我收到错误：

require

我也觉得AssertionError actual: undefined expected: true generatedMessage: false message: "missing path" name: "AssertionError" operator:"==" stack:"AssertionError: missing path↵ at Module.require (module.js:496:3)↵ at require (internal/module.js:20:19)↵ at asyncRequire.js:18:21" __proto__: Error和require完成之间可能会有延迟。因此，callback可能会失败。这是对的吗？

请注意，这是我的问题的延续：Where/How Should I require multiple modules for performance?

Answer 1

据我所知，你不能要求这样的模块（动态/运行时），只有我认为你能做到这一点的方法是在运行时通过public function __construct() { // Call the Model constructor parent::__construct(); $this->load->database(); $this->load->model('user_model'); //database inserter //Add this library $this->load->library('form_validation'); }模块手动读取文件。有关如何执行此操作的详细信息，请访问：Loading Node.js modules dynamically based on route

NodeJS＆amp;电子：异步多个必需文件

1 个答案: