JavaScript 中的胖箭头函数
胖箭头函数语法如下所示 −
(param1,param2,..)=>{ }
它没有 function 关键字,只在参数和函数体之间有 =>。
以下是 JavaScript 中实现胖箭头函数的代码 −
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; color: blueviolet; } </style> </head> <body> <h1>Fat arrow functions</h1> <div class="result"></div> <button class="Btn">CLICK HERE</button> <h3>Click on the above button to call the add() fat arrow function</h3> <script> let resEle = document.querySelector(".result"); let add = (a, b) => { return a + b; }; document.querySelector(".Btn").addEventListener("click", () => { resEle.innerHTML = "Sum of 32 and 19 =" + add(32, 19); }); </script> </body> </html>
输出
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