简单教程
提交运行
代码编辑器:
<p>该范例中,我们忽略了最后一个参数,在循环体中执行递增</p> <p>点击按钮以索引(升序)的方式循环数组</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> function myFunction() { var cars = ["BMW", "Volvo", "Saab", "Ford"]; var i = 0; var len = cars.length; var text = ""; for (; i < len;) { text += cars[i] + "<br>"; i++; } document.getElementById("demo").innerHTML = text; } </script>
运行结果: