js中for forEach和php中for foreach遍历
<?php$nums=[1,2,3,4,5,6];$cars=["BWM","AUDI","Volvo"];for ($i=0; $i <count($nums) ; $i++) { echo $nums[$i].'<br>';}foreach($cars as $car){ echo $car.'<br>';}echo "<hr>";?><!DOCTYPE html><html lang="zh-CN"> <head> <meta charset="UTF-8" /> <meta http-equiv="X-UA-Compatible" content="IE=edge" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>Document</title> </head> <body> <ul class="list"> <li class="item">item1</li> <li class="item">item2</li> <li class="item">item3</li> <li class="item">item4</li> <li class="item">item5</li> </ul> <script> const arrs = document.querySelectorAll(".item"); console.log(arrs); arrs.forEach((elments) => console.log(elments)); for (let index = 0; index < arrs.length; index++) { const element = arrs[index]; console.log(element); } </script> </body></html>
