php遍历数组与js遍历数组的区别

PHP中的遍历语法模板

<?php $cars = ['宝马3GT xDrive 330li 耀石灰', '宝马X5 xDrive30i x', '宝马750li xdrive v8 M'];?>
    <? foreach ( $cars as $a ):?>
    <li style = 'color:red'>
    <a href = ''><? echo $a?></a>
    </li>
    <?endforeach?>

js 中的遍历 数组方法

<script type = 'text/javascript'>
let cars = ['宝马3GT xDrive 330li 耀石灰', '宝马X5 xDrive30i x', '宝马750li xdrive v8 M'];
// for ( let i = 0; i < cars.length; i++ ) {
//     alert( cars[i] );
// }
let li  = document.createElement("li");
   let a = cars.forEach((a,b) => alert(a));
</script>