tryjsref_radio_value 在线代码实例

实例代码( Tip: 登录后体验更佳 )
运行代码

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<!DOCTYPE html>
<html>
<head>
<script>
function displayResult()
{
var x=document.getElementById("red").value;
alert(x);
}
</script>
</head>
<body>
<form>
What color do you prefer?<br>
<input type="radio" name="colors" id="red" value="red">Red<br>
<input type="radio" name="colors" id="blue" value="blue">Blue<br>
<input type="radio" name="colors" id="green" value="green">Green
</form>
<button type="button" onclick="displayResult()">Display value of "Red" radio button</button>
</body>
</html>
 
 
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运行结果
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