App下載
實(shí)例代碼( Tip: 登錄后體驗(yàn)更佳 )
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>W3Cschool教程(w3cschool.cn)</title>
</head>
<body>
<p>点击按钮循环代码5次。</p>
<button onclick="myFunction()">点击这里</button>
<p id="demo"></p>
<script>
function myFunction(){
    var x="";
    for (var i=0;i<5;i++){
        x=x + "该数字为 " + i + "<br>";
    }
    document.getElementById("demo").innerHTML=x;
}
</script>
</body>
</html>
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