如何从 JavaScript 中的构造函数返回值?
以下是返回 JavaScript 中构造函数的值的代码 −
示例
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> <style> body { font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; } .result { font-size: 20px; font-weight: 500; } </style> </head> <body> <h1>Returning value from constructor</h1> <div style="color: green;" class="result"></div> <button class="Btn">CLICK HERE</button> <h3>Click on the above button to return a object from constructor</h3> <script> let resEle = document.querySelector(".result"); function Human(){ this.firstName = 'Rohan'; this.lastName = 'Sharma'; this.age = 22; return {firstName:'Mohit',lastName:'Sharma'}; } let obj = new Human(); document.querySelector(".Btn").addEventListener("click", () => { for(i in obj){ resEle.innerHTML += 'Key = ' + i + ' : Value = ' + obj[i] + '<br>' } }); </script> </body> </html>
输出
以上代码将产生以下输出 −
以上代码将产生以下输出 −
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