简单教程
提交运行
代码编辑器：
<p>点击按钮通过循环数组的索引打印出车名（升序）</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> function myFunction() { var cars = ["BMW", "Volvo", "Saab", "Ford"]; var text = ""; var i; for (i = 0; i < cars.length; i++) { text += cars[i] + "<br>"; } document.getElementById("demo").innerHTML = text; } </script>
运行结果：