菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
</head>
<body>

<script id="runoob1">
document.write("Hello Runoob!");
</script>

<p>点击按钮遍历文档中所有的 script 元素，并输出每个 script 元素的 id：。</p>

<button onclick="myFunction()">点我</button>

<p id="demo"></p>

<script  id="runoob2">
function myFunction() {
    var x = document.scripts;
    var txt = "";
    var i;
    for (i = 0; i < x.length; i++) {
        txt = txt +  x[i].id + "<br>";
    }
    document.getElementById("demo").innerHTML = txt;
}
</script>

</body>
</html>
              