Javascript 网页包-如何要求原型功能?
我最近刚开始将Webpack作为未来jQuery插件的模块加载器,但在尝试将单个原型函数分离到单独的文件中时遇到了问题Webpack似乎正在将原型函数导入单独的IFFS中,这反过来又给了我一个控制台错误 我做错什么了吗 示例代码:(在运行Web包之前) app.js 模块1.js WEBPACK snippitJavascript 网页包-如何要求原型功能?,javascript,webpack,prototype,webpack-2,Javascript,Webpack,Prototype,Webpack 2,我最近刚开始将Webpack作为未来jQuery插件的模块加载器,但在尝试将单个原型函数分离到单独的文件中时遇到了问题Webpack似乎正在将原型函数导入单独的IFFS中,这反过来又给了我一个控制台错误 我做错什么了吗 示例代码:(在运行Web包之前) app.js 模块1.js WEBPACK snippit /******/ ([ /* 0 */ /***/ (function(module, exports) { // Module 1 console.log("Module 1");
/******/ ([
/* 0 */
/***/ (function(module, exports) {
// Module 1
console.log("Module 1");
Cars.prototype.listing = function() {
console.log(this.year + ", " + this.color + ", " + this.make + ", with " + this.doors + " doors");
}
/***/ }),
/* 1 */
/***/ (function(module, exports, __webpack_require__) {
(function() {
var Cars = function(color, doors, year, make) {
this.color = color;
this.doors = doors;
this.year = year;
this.make = make;
}
__webpack_require__(0);
var Audi = new Cars("red", 5, 2001, "Audi");
Audi.listing();
})();
/***/ })
/******/ ]);
控制台错误
Uncaught ReferenceError: Cars is not defined
at Object.make.color (module1.js:4)
at __webpack_require__ (bootstrap 91cca6f…:19)
at app.js:12
at Object.<anonymous> (app.js:20)
at __webpack_require__ (bootstrap 91cca6f…:19)
at bootstrap 91cca6f…:65
at bootstrap 91cca6f…:65
Uncaught ReferenceError:未定义车辆
在Object.make.color(module1.js:4)
at\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
app.js:12
反对。(app.js:20)
at\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
在引导91cca6f时…:65
在引导91cca6f时…:65
代码中的一些问题:
module1
不是依赖于未声明变量Car
的实际模块。这就是报告错误的原因module1
试图对Cart
产生副作用(即在汽车原型上增加一个属性),这不是一个好的做法。产生副作用是可以的,但最好在需要时显式设置,而不是通过模块加载Cars
模块中,最好将require
部分视为静态部分,而不是采取某种效果的方法。(参见本参考文件:)// module 1
module.exports = {
list: function list() { /* .... */ }
}
// Cars
// require, no effect;
var module1 = require('./module1')
function Cars() {
// code
}
// Take effect. via extending. I used underscore, you can use whatever extending methods such as $.extend
_.extend(Cars.prototype, module1}
//....other code
此外,如果模块中不需要,您可以将其删除。谢谢,这更有意义。两个问题,当提到.extend方法时,你是指jQuery方法还是webpack有自己的extend方法?你还提到了IFFE,我的计划是将webpack与我的jQuery插件一起使用。目前我使用jQuery样板模式,这依赖于IFFE来限制范围。很高兴@FrederickM.Rogers。对于extend,我指的是基本上从一个对象到原始对象添加/覆盖属性的扩展。对于IFFE,它在webpack中是不需要的,基本上IFFE的目标是运行一次代码,这意味着需要一个模块。如果所有的插件都是你的,你可以用对象的方式写出来,并在一个更干净的地方扩展它们。再次感谢你,我会试试看结果如何。
Uncaught ReferenceError: Cars is not defined
at Object.make.color (module1.js:4)
at __webpack_require__ (bootstrap 91cca6f…:19)
at app.js:12
at Object.<anonymous> (app.js:20)
at __webpack_require__ (bootstrap 91cca6f…:19)
at bootstrap 91cca6f…:65
at bootstrap 91cca6f…:65
// module 1
module.exports = {
list: function list() { /* .... */ }
}
// Cars
// require, no effect;
var module1 = require('./module1')
function Cars() {
// code
}
// Take effect. via extending. I used underscore, you can use whatever extending methods such as $.extend
_.extend(Cars.prototype, module1}
//....other code