简单教程
提交运行
代码编辑器：
<p>点击按钮使用索引循环数组 "cars"</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> function myFunction() { var cars = ["BMW", "Volvo", "Saab", "Ford"]; var i; for (i = 0, len = cars.length, text = ""; i < len; i++) { text += cars[i] + "<br>"; } document.getElementById("demo").innerHTML = text; } </script>
运行结果：