node.js 模組是一種包,其中包含某些供導入它們的人使用的函數或方法。網路上提供了一些模組供開發人員使用,例如 fs、fs-extra、crypto、stream 等。您也可以製作自己的套件並在程式碼中使用它。
exports.function_name = function(arg1, arg2, ....argN) { // Put your function body here... };
建立兩個名為 calc.js 和 index.js 的文件,並複製以下程式碼片段。
calc.js 是自訂節點將保存節點功能的模組。
index.js 將匯入 calc.js 並在節點進程中使用它。
calc.js
//Creating a custom node module // And making different functions exports.add = function (a, b) { return a + b; // Adding the numbers }; exports.sub = function (a, b) { return a - b; // Subtracting the numbers }; exports.mul = function (a, b) { return a * b; // Multiplying the numbers }; exports.div = function (a, b) { return a / b; // Dividing the numbers };
index.js
// Importing the custom node module with the below statement var calculator = require('./calc'); var a = 21 , b = 67 console.log("Addition of " + a + " and " + b + " is " + calculator.add(a, b)); console.log("Subtraction of " + a + " and " + b + " is " + calculator.sub(a, b)); console.log("Multiplication of " + a + " and " + b + " is " + calculator.mul(a, b)); console.log("Division of " + a + " and " + b + " is " + calculator.div(a, b));
C:\homeode>> node index.js Addition of 21 and 67 is 88 Subtraction of 21 and 67 is -46 Multiplication of 21 and 67 is 1407 Division of 21 and 67 is 0.31343283582089554
以上是在 Node.js 中建立自訂模組的詳細內容。更多資訊請關注PHP中文網其他相關文章!