Web Front-endJS TutorialDetailed explanation of the difference between webpack require.ensure and require AMDDetailed explanation of the difference between webpack require.ensure and require AMD
This article mainly introduces the detailed explanation of the difference between webpack require.ensure and require AMD. The editor thinks it is quite good. Now I will share it with you and give you a reference. Let’s follow the editor to take a look, I hope it can help everyone.
require-amd
Description: Same as the require function of AMD specification. When used, a module array and callback function are passed. The modules are downloaded and all The callback function is executed only after it is executed
Syntax: require(dependencies: String[], [callback: function(...)])
Parameters
dependencies: module dependency array
callback: callback function
##require-ensure
- dependencies: Array of dependent modules
- callback: callback function, a require parameter will be passed when the function is called
- chunkName: module name, used for building When generating files, use
Example
require-amd
Source codewebpack.config.amd .jsvar path = require("path");
module.exports = {
entry: "./example.amd.js",
output: {
path: path.join(__dirname, "amd"),
filename: "[name].bundle.js",
chunkFilename: "[id].chunk.js"
}
};example.amd.js
require(["./module1"], function(module1) {
console.log("aaa");
var module2 = require("./module2");
console.log("bbb");
});module1.js
console.log("module1");
module.exports = 1;module2.js
console.log("module2");
module.exports = 2;
Build results
Run webpack --config webpack in the command line .config.amd.js- main.bundle.js
- example.amd.js
- 1.chunk.js
- module1.js
- module2.js
Run result
Run amd/index.html in the browser, the console output:module1 aaa module2 bbb
require-ensure
Source codewebpack.config.ensure.jsvar path = require("path");
module.exports = {
entry: "./example.ensure.js",
output: {
path: path.join(__dirname, "ensure"),
filename: "[name].bundle.js",
chunkFilename: "[name].chunk.js"
}
};example.ensure.js
require.ensure(["./module1"], function(require) {
console.log("aaa");
var module2 = require("./module2");
console.log("bbb");
require("./module1");
}, 'test');module1.js Same as above
Same as above
Build result
Run webpack in the command line --config webpack.config.ensure.js- main.bundle.js
- example.amd.js
- 1.chunk.js
- module1.js
- module2.js
Running results
Run ensure/index.html in the browser, console output:aaa
module2
bbb
module1
require-ensure-chunk
Source code webpack.config.ensure.chunk.jsvar path = require("path");
module.exports = {
entry: "./example.ensur.chunk.js",
output: {
path: path.join(__dirname, "ensure-chunk"),
filename: "[name].bundle.js",
chunkFilename: "[name].chunk.js"
}
};example.ensur.chunk.js
require.ensure(["./module1"], function(require) {
console.log("aaa");
require("./module1");
console.log("bbb");
}, 'common');
require.ensure(["./module2"], function(require) {
console.log("ccc");
require("./module2");
console.log("ddd");
}, 'common');module1. js Same as above
Same as above
Build results
Run webpack --config webpack in the command line .config.ensure.js- main.bundle.js
- example.amd.js
- 1.chunk.js
- module1.js
- module2.js
Run result
Run ensure/index.html in the browser, the console output: aaamodule1
bbb
ccc
1module2
ddd
Knowledge about Webpack, Babel and React
How to understand loader and plugin in webpack
How to use webpack to package css
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