如何使用 node.js 將多個 javascript 文件合並為 1 個文件

Question

大家好，

我創建了一個包含 10 多個 js 文件的大型 JavaScript 項目。 現在我想將所有 js 文件的代碼合並到 1 個文件中。 我用 node.js 創建了一個測試文件，但它什么也沒做，我不知道問題是什么。

 var fs = require("fs"); var codes = ["M:/HTML-Projekte/ChabanicSouls/combineFunc/file1.js","M:/HTML-Projekte/ChabanicSouls/combineFunc/file2.js","M:/HTML-Projekte/ChabanicSouls/combineFunc/file3.js"]; var combined = ""; for(let x = 0; x < codes.length; x++) { fs.readFile(codes[x], "UTF-8", function(err, data) { if (err) { throw err; } combined += data; }); } fs.writeFile('M:/HTML-Projekte/ChabanicSouls/combineFunc/ugly.js', combined , function(err) { if(err) { return console.log(err); } console.log("The file was saved!"); });

如果您有 Idee，如何解決此問題，請告訴我。

Answer 1

我找到了自己解決問題的方法，

    var fs = require("fs");

const codes = ["M:/HTML-Projekte/ChabanicSouls/original_Codes/chaVar.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaSocket.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaChat.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaVarMain.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaField.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaFriends.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaArchive.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaMain.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaTimer.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaActions.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaFight.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaKeys.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaLvUp.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaMarket.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaMove.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaNextPl.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaParaUp.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaSoul.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaGetFunc.js",
    "M:/HTML-Projekte/ChabanicSouls/original_Codes/chaStart.js"];


function readIt() {
    let combined = [];
    let doneCheck = [];
    let errVal = false;
    for (let x = 0; x < codes.length; x++) {
        doneCheck.push(false);
    }
    for (let x = 0; x < codes.length; x++) {
        fs.readFile(codes[x], "UTF-8", function (err, data) {
            if (err || !data) {
                console.log(codes[x]);
            } else {
                combined.push(data);
                doneCheck[x] = true;
            }
            if (x == (codes.length - 1)) {
                saveIt(combined, doneCheck);
            }
        });
    }
}
function saveIt(combined, doneCheck, round = 0) {
    let counter = 0;
    for (let x = 0; x < doneCheck.length; x++) {
        if (doneCheck[x] == false) {
            fs.readFile(codes[x], "UTF-8", function (err, data) {
                if (err || !data) {
                    console.log(codes[x]);
                } else {
                    combined.push(data);
                    doneCheck[x] = true;
                }
                if (x == (codes.length - 1)) {
                    return saveIt(combined, doneCheck, round);
                }
            });
        } else {
            counter++;
        }
    }
    if (counter < doneCheck.length) {
        return false;
    }
    let combined_string = "";
    for (let y = 0; y < combined.length; y++) {
        combined_string = combined_string + combined[y] + " ";
    }
    fs.writeFile('M:/HTML-Projekte/ChabanicSouls/ugly.js', combined_string, function (err) {
        if (err) {
            return readIt();
        }

        console.log("The file was saved!");
    });
}

readIt();

這種方式非常有效:-)