菜鸟教程在线编辑器

左右布局

AI 编程工具

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程(runoob.com)</title>
<script>
function displayResult(){
    var x=document.getElementById("bike").value;
    alert(x);
}
</script>
</head>
<body>
​
<form>
<input type="checkbox" id="bike" value="Bike"> 我有一辆自行车 <br>
</form>
<button type="button" onclick="displayResult()">显示value值</button>
​
</body>
</html>