简单教程
提交运行
代码编辑器：
<p>点击按钮以索引为键值的方式循环数组 "cars", 开始的索引值为 2</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> function myFunction() { var cars = ["BMW", "Volvo", "Saab", "Ford"]; var i = 2; var len = cars.length; var text = ""; for (; i < len; i++) { text += cars[i] + "<br>"; } document.getElementById("demo").innerHTML = text; } </script>
运行结果：