JavaScript 中 Array.prototype.find() 方法。
Array.prototype.find() 方法返回在数组中满足给定条件的第一个元素值。
下面是 Array.prototype.find() 方法的代码 -
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; } .find { font-size: 20px; font-weight: 500; } </style> </head> <body> <h1>JavaScript Array Find() example</h1> <div class="find"></div> <button class="fillArr">CLICK HERE</button> <h3>Click on the above button to find lion among the animals</h3> <script> function findLion(animal) { return animal === "lion"; } let fillEle = document.querySelector(".find"); let arr = ["cow", "lion", "bull", "tiger"]; fillEle.innerHTML = arr; document.querySelector(".fillArr").addEventListener("click", () => { fillEle.innerHTML = arr.find(findLion); }); </script> </body> </html>
输出
以上代码将生成以下输出 -
单击“点击此处”按钮 -
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