AMD 是一种 JavaScript 模块化规范,他的优缺点是什么?原理是什么
AMD 的优点
AMD 的缺点
let factories = {};
function define(modName, dependencies, factory) {
factory.dependencies = dependencies;
factories[modName] = factory;
}
function require(modNames, callback) {
let loadedModNames = modNames.map(function (modName) {
let factory = factories[modName];
let dependencies = factory.dependencies;
let exports;
require(dependencies, function (...dependencyMods) {
exports = factory.apply(null, dependencyMods);
});
return exports;
})
callback.apply(null, loadedModNames);
}
这是之前写的一版基本原理
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